E-Mapping User Manual

Please note: This manual was written for the "E-Mapping" property information search application. A new version, designed for the "Property Viewer" application, is in the works. We apologize for any confusion or inconvenience.




You can access E-Mapping directly by going to http://maps.bouldercounty.org/boco/emapping/ or go to the Assessor's Office Home page at www.bouldercountyassessor.org , then under "Service Links" click on E-Mapping.

Data Refresh

Attribute/tabular data is refreshed Monday-Friday at 7:00pm. The physical parcel boundaries for changes reflected in new subdivisions, lot line adjustments etc. may take longer to show and are generally refreshed monthly after being edited by GIS staff. Values are updated per statuary deadlines and are: January, May, August, & November

Property Search Overview

When the E-Mapping window opens, you can start your Search .

Note: the toolbar icons in the upper right hand corner of the screen which allow you to Print, search for a list of properties or do a Buffer (information on properties within a certain distance) by clicking on the red Toolbox, Refresh the map to go back to the full view of the County, or get Help in using E-Mapping . You can also turn the aerial photos on or off by sliding the Imagery bar either right to turn on the left to turn the aerials off. You can also slide the imagery bar only slightly left of right to make the aerial photos more transparent, but still visible or completely invisible and just see the parcel boundaries and streets.

Also note that you can move the Property Search text box out of your way to view the map if needed.

Fig. 001


Fig. 002

Fig. 003

You can choose to see imagery by clicking the radio button next to "Imagery," or streets by clicking the radio button next to "Streets".

Fig. 004

You can also see both by using the sliding bar. As you slide the bar toward "Imagery", imagery becomes opaque and streets become transparent. If you slide the bar toward "Streets", streets become opaque and imagery becomes transparent.

Navigating With The Mouse

Fig. 005

You can Search for property information any of the following ways

  • Street Address
  • Street Name
  • Parcel Number
  • Account Number
  • Subdivision Name
  • Owner Name
  • S-T-R (Section-Township-Range)

Choose how you are going to Search, than type the specific information in the "Property Search text field". (ie Street Address, Street Name, Parcel Number, Owner Name, Subdivision Name, or S-T-R as listed above).

When done entering the information you are using to search by, either click on the "Search" button to the right of the "Property Search text field" or just hit "Enter".

Fig. 006

Property Search Tools

Street Address

Enter the street number and street name in the Search text box field as seen below (do not use punctuation, or abbreviations for direction or type such as: N, S, E, W or RD, ST, AVE, CIR, since using these may narrow your search results.

Fig. 007

You can also search by the Street "Name" only to search for all properties located on a specific street. After typing in the Street Name in the Search text box, you will get this "Search for?" window where you will select Street Name, then click on "Select".

Fig. 008

Then the "Properties" list will open, and you can double-click on a property to open up the "Detailed Property Information" window for that property.

Fig. 009

To get back to the "Properties" List, just click on the "Return to List" button.

Parcel Number

Enter the 12 digit Parcel Number, and click on "Search" or press "Enter" to zoom to the property and get the property information.

Fig. 010

The parcel number may also include letters. Enter the 12 digit Parcel Number including the letters, and click on "Search" or press "Enter" to zoom to the property and get the property information.

Fig. 011

Account Number

Enter the leading letter for the 8 digit Account Number (i.e. R, P, M, O, or U) along with the leading zeros (Example: R0085095). (R=Real Property (Land/Imp an Imp (improvement) is a building), M=Mobile Home, O=Oil & Gas, U=Utilities, and P=Personal Property (equipment for a business, and since personal property information is confidential you may want to contact the Personal Property department).

Click on "Search" or press "Enter".

Fig. 012


Type part or all of the Subdivision name in the "Property Search" text field, then click on "Search" or press "Enter".

Fig. 013

You will get the "Search for?" window with a drop-down list to let you choose what you want to search for under "What are you looking for?". Select to search either by - Owner Name, Subdivision, or Street Name, and click on "Select" or "Cancel" to cancel your search.

Fig. 014

(Example: "Boulder" will pull up a list of subdivisions which include the name "Boulder"). You will get the "Select Subdivision From List" window where you can select the correct Subdivision to search by.

Click on "OK" or "Cancel" to cancel your search.

Fig. 015

The "Properties" list window will open with a list of the properties within the Selected Subdivision*

Fig. 016

*NOTE: Selecting (or downloading information) on properties does not have to be done solely through a subdivision search, but can be done whenever parcels have been brought into the Parcel Pick List.

In the "Properties' list you will see the parcels in the Subdivision list also highlighted in yellow on the map (note: there are only 2 properties in the subdivision list and map below):

Fig. 017

As you move your cursor down to select a property in the list, you will see that parcel outlined in red in the map window. You can select one of the properties in the list and open the "Detailed Property Information" window for that specific account.

To get back to the Properties list, just click on the "Return to List" button.

Fig. 018

You can choose to "Create a Report for Selected Accounts" and you can click on only some of the accounts in your list or check the box in the upper right hand corner of the window to select "all" of the accounts in your list. Then click on the icon "Create Report for Selected Accounts" (Note: see the list above which has 2 accounts selected, and this is also noted in the snapshot as "Create Report for 2 Selected Accounts", since there are only 2 properties in the subdivision).

Or, you can choose to click on the "Export to CSV" to save you property information to a spreadsheet. (see examples of each below)

The "Detailed Property Information Report" opens and has the property information for each account selected in your Parcel Pick List:

Fig. 019

The "Export to CSV" saves the property information for each account selected in your Parcel Pick List:

Fig. 020

To Print this Report, see below for help with printing. Close the window when done, and you will go back to your list. You can either double-click on a row in the list to pull up the Detailed Property Information window, or Export to a csv file to save the information, or just close the "Properties" window.

Quick Downloading of Selected Parcels

Another option is to select all records in the "Properties List" and paste them in an Excel, Word, Notepad, etc. This will not generate a Detailed Property Information Report as outlined above but can be useful if you want a simple list of account numbers, parcel numbers, primary owner names and property addresses.

Note: Again, this option works for all Properties Lists within the E-Mapping application and is not unique to a subdivision search.

To do this:

  1. Click on the upper left cell of the Pick List

    Fig. 021
  2. Ctrl + A to select all records
  3. Ctrl + C to copy
  4. Ctrl + V to paste in blank Excel workbook, Word doc, Notepad, etc.

You will have to add the column headings as these do not copy. Also, the Parcel Number column may need to be formatted if pasting into Excel. To do this, highlight the Parcel Number column and right-click > Format Cells. Under the Number tab, select Number (second option). Using the up arrow, make the decimal places indicate 0, OK.

Owner Name

You can type the complete Owner Name Then, click on "Search" or press "Enter".

Fig. 022

or, you can just type only part of the Owner Name along with a wild card such as the percent sign (%), to search and find information on more variations of an Owner Name (i.e.: %Boulder).

Fig. 023

Again, click on "Search" or press "Enter". The "Search for?" window will open, select "Owner Name", then click on "Select" to get your "Properties" list. Note: the parcels in your "Properties List will also be highlighted on the map.

Fig. 024

To get back to the Properties list, just click on the "Return to List" button.

Fig. 025

Section Township Range (S-T-R)

Type in the correct S-T-R (Section-Township-Range). Example: 30-1N-70W. Note: this can be found on the property information tab in E-Mapping.

"Sections" range between 1 and 36, "Townships" can be 1S, 1N, 2N, or 3N, and "Ranges" can be from 69 to 74.

The S-T-R consists of a one or two digit number between 1 and 36 for a section, a one or two digit number from 1 to 3 followed by and N or an S for Township, and a 2 digit number between 69 and 74 for the range. Fyi - The range can be followed by a "W", and 1 digit numbers can have a leading "0".


    7 1N 71
    7 1N 71W
    07 1N 71

If the search engine does not detect 1 of 5 patterns, it will assume that you want either Owner Name, Street Name, or Subdivision Name. A window will drop-down to let you choose what you want to search for. Select to search either by Owner Name, Subdivision, or Street Name, and click on "Select" or "Cancel" to cancel your search.

Fig. 026

After typing in the information you are using to Search by in the "Property Search" field, you will get a list of properties:

Fig. 027

You can Select one of the rows in your list, then double click on the row to Zoom into the area and open up the "Detailed Property Information" window for your account, which gives you information about ownership, legal description, acreage, values, deed information, click in the "Subdivision Plat" button to view a platted Subdivision, and much more including "links" to other departments. And, you can print the page, or the map in E-Mapping showing the outline of the parcel(s), or even print an "Un-official" copy of a Subdivision plat. (You would need to contact the Boulder County Clerk & Recorder's office to get an "Official" copy of any document, including a subdivision plat).

When you are ready to get information on a different property, just click on the parcel in the Map to pull up the "Detailed Property Information for Account R0002704 or whichever account you are searching for information on". Note: the Detailed Property Information window will appear to "flip" over to another information window for the new property.

To get back to the Properties list, just click on the "Return to List" button.

Fig. 028

You can also select one or multiple rows in the list and Print a Report, or export the information for the properties to a "csv" file by clicking on "Export to a CSV". (More information on this further below).

E-Mapping will Zoom To the parcel and the "Detailed Property Information" window opens where you will find several tabs you can click on to get different information about your property, including Ownership, Account Number, Parcel Number, brief Legal Description (the full legal description can be found on the deed), the Deed/Reception Numbers listed on the Assessment tab (see the screenshot listed further below), there are several other tabs with links to the Treasurer's office for Tax information, Public Lands, Zoning, Floodplain, Elections in the Clerk & Recorder's office, and a link to the City of Boulder's website. There is also a tab where you can choose to view your property in a map via Open Street View, Bird's Eye View, or even open Google Earth View (screenshots of these further below).

You will find Information on property from the Assessor's office, and also Links to other Departments for Information on the different Tabs:

  • Property
  • Assessment
  • Taxes
  • Public Lands
  • Zoning
  • Floodplain
  • Elections
  • Septic Smart
  • Plats
  • Other Views
  • City of Boulder

Fig. 029

The "Property" information window

On this tab you will find information regarding:

  • Account Number
  • Parcel Number
  • brief Legal Description (the full legal descriptions can be found on the deed)
  • Owner's Name and Mailing address
  • Property Address
  • Estimated Square Feet or Acreage for your parcel

Fig. 030

Close the window when you are done, and you are ready to begin a Search for another property.

The "Assessment" window

On this tab you will find information regarding:

  • Account Number
  • Property Address
  • Tax Area
  • Parcel Number
  • Deed/Reception Numbers and sales price
  • Actual and Assessed Values
  • Characteristics about number of rooms and their size

Fig. 031


Printing a subject property is as easy as selecting the print icon in the upper right-hand corner of E-mapping.

Fig. 032

Next, you will be prompted to print using either Portrait or Landscape View. When selected, click OK to print - Generally a map window is printed best in Landscape View and a Report is best in Portrait View but this can be highly individualistic. Simply choose the orientation that appears to match your selection criteria the closest.

Fig. 033

This will generate an image of the property you have selected. From here, simply navigate to the File function from your browsers Menu and hit Print.

Fig. 034

Please be aware that all browsers ( Google Chrome, Windows Internet Explorer and Mozilla Firefox ) are all slightly different and include different functionality. As of this writing (early 2013), you can also right-click on any of these map images and print directly from the resulting window in all browsers except for Mozilla Firefox.

Fig. 035

Additionally, only Windows Internet Explorer will let you right-click and save the image as a JPEG (.jpg) should you want to access it at a later time.

Tabular data for a specific parcel can be printed as well. Rather than using the Print Icon shown above, simply click on either the Print Page or Print All buttons from the tab of interest (found within the Detailed Property Information window).

Fig. 036


E-Mapping has predefined bookmarks to help navigate to a particular city within Boulder County. Simply click on the dropdown menu and select a city to zoom to its extent.

Fig. 037

You can also create or delete bookmarks to help personalize your search locations. Please note, adding or deleting bookmarks will only save to the computer which you are working on. To create or delete a bookmark, simply click the Advanced Tools box and select Bookmarks. A Bookmarks window will appear offering the option to Create or Delete a bookmark.

Fig. 038

To Create a bookmark, simply click Create and enter a bookmark name in the window that'll appear:

Fig. 039

To Delete a bookmark, select a Bookmark from the drop down list and click Delete.

Fig. 040

The "Detailed Property Information" window opens on the first tab for "Property":

Fig. 041

There are several Tabs where you will find Information & Links for

  • Property (Property Address, Account Number, Parcel Number, Owner, Mailing Address, S-T-R, Legal Description, Approximate GIS acres & Square Feet, "Subdivision Plat" - you can click on this icon to View and Print a recorded Subdivision plat)


  • Assessments
  • Treasurer's Office (Tax information)
  • Open Space, Zoning
  • Floodplain
  • Elections
  • Septic
  • Surveys (if there is a Survey deposited with Boulder County Land Use & Planning), street/aerial views of an area
  • City of Boulder website link (hopefully more links to other cities in Boulder County to come in the future)

Detailed Property Information

Fig. 042


In the Property tab, you will find:

  • Property Address
  • Account Number (if there is an associated Personal Property account it will be in the drop down list in Select Account Number)
  • Parcel Number
  • Owner Name
  • Mailing Address
  • Section-Township-Range
  • Legal Description
  • Estimated Parcel Area (Square Feet & Acres)
  • Subdivision Plats - (if the property is located within a platted subdivision there should be a recorded plat in the Boulder County Clerk & Recorder's office so you can view an image of the Plat by clicking on this icon).
  • Print Page or Print All


Fig. 043

In the Assessment tab, you will find:

  • Account Number (8 digit number, using the leading R,P,O,U)
  • Parcel Number (12 digit number)
  • Site Address (aka property address which again can be different from mailing address)
  • Tax Area
  • Number of Improvements (Number of Buildings located on the property)
    Note: When in the Improvement information window in the lower right, you can scroll down to view the specific information for each building.
  • Neighborhood (area where the property is located)
  • Deed Information (reception number, date recorded, sales price)
  • Actual & Assessed Values (Residential property Actual Value is based on market value based on a certain prior 2 year period, the Assessed Value is a percentage (currently 7.96%) of the Actual Value which is how the Treasurer's office calculates the taxes)


On the Taxes tab click on the link "Property Tax Data" which will take you to the Treasurer's office website regarding tax information for your property.

Please contact the Treasurer's office for more information about your taxes, special assessments, and payments.

Fig. 044

Next , this window on the Treasurer's website opens:

Fig. 045

In the Property Tax window, you will find:

  • Account Number
  • Tax Area (includes the different Taxing Districts within a tax area)
  • Property Address
  • Owner Name
  • Legal Description
  • Assessed & Actual Values (Actual Value based on market, Assessed Value is a percentage of Actual Value - 7.96% for Residential & 29% Commercial and other properties)
  • Mill Levy (click the "Show Mill Levy Tax Detail" for the breakdown of the different Tax Districts that make up the total mill levy)
  • Special Assessments (for Water, other Fees, Special Assessments, Exemptions)
  • Taxes Due (1st Half/Full amount, and 2nd Half amount)
  • Links (to Assessor Detail, Previous Years Taxes, and a New Search)

Public Lands

The Public Lands tab has a link for which will direct you to the "Parks & Opens Space" website for information about different types of uses for land in the area.

Please contact the Boulder County Parks & Open Space department for more information.

Fig. 046

You can Zoom in (+) or Zoom out (-) of the area of your property in the map window by clicking on the +/- in the scrollbar located in the upper left area of the window (or you can slide the bar up or down to zoom in/out) to see if any of the different Layers listed in the window on your left are highlighted in the map showing if these types of lands are located in your area. You can also click on either the "Public Open Space" icon to see if there is any open space in the area, or you can click on "Agricultural Land" to see if there are any agricultural land parcels in the area.


The Zoning tab has a link for "Land Use Department" which will direct you to the Land Use Department website for information about different types of zoning in the area.

Please contact the Land Use Department for more information.

Fig. 047

In the Zoning tab, you will find: (Note: sometimes as in the map shown above, there is no Zoning information listed)

  • Property Address
  • Parcel Number
  • County Permit & Docket Information
  • Wind Loads
  • Snow Loads
  • Wildfire Rating
  • Print Page
  • Show Legend
  • Comp Plan
  • Inter Government Agreement
  • Map of the area


The Floodplain tab has a link for "Transportation Department" which will direct you to the Transportation Department website for information about information on flood plains in the area.

Please contact the Transportation Department for more information.

Fig. 048

In the Floodplain tab, you will find:

  • Property Address
  • Parcel Number
  • Floodplain Information
  • Elevation Certificate
  • Flood Control Website (takes you to the Transportation Department)
  • Link to FEMA Map Service Center
  • Map of the area showing the 100 year floodplain


The Elections tab has a link for "Elections Department" which will direct you to the Elections Department website for information about information on flood plains in the area.

Please contact the Elections Department for more information.

Fig. 049

In the Elections tab, you will find:

  • Property Address
  • Parcel Number
  • Precinct Number
  • US Congressional, State Senate, State House Districts
  • County Commissioner's District
  • Links to - Assessors office, Treasurers office, and the Clerk & Recorder's office website which includes the Elections division, Motor Vehicle, and the Recording divisions.

Septic Smart

The Septic Smart tab has a link for "Environmental Health Division of Boulder County Public Health" which will direct you to the Environmental Health Division website for information about information on Septic Systems in the area.

Please contact the Environmental Health Division for more information.

Fig. 050

Click on the Search Septic Smart tab to get to this window for the Environmental Health Division of Boulder County Public Health.

Here in the search window you can search by:

  • Street Name
  • Property Address (do not use punctuation, or abbreviations for direction or type such as N, S, E, W or RD, ST, AVE, CIR, since using these may narrow your search results).
  • Property ID (same as the 8 digit Account Number)
  • Parcel Number (12 digit number)

Select how you want to do you Search, then type in the appropriate information. Click on "Submit Query" for information about a septic system:

Fig. 051

Next, you will get this list of addresses where you can Select the appropriate "Details" link for the property address you would like to get more detailed information on:

Fig. 052

You click on the "Details" link will open the window on the next page:

Clicking on the Details link will open this window with the permit information for the septic system:

Fig. 053

You can Search by the "Document Type" to by clicking the arrow and selecting the document type to search for in the drop-down list, then click on "Go"

You can Search for: All documents, Blueprints, Designs and Drawings, Inspections, Legal , Miscellaneous, or Permits.

The following window appears:

Fig. 054

In this window you can now click the "Document Type": Permits, Designs and Drawings, Legal, or Blueprints for more information.

Example : If you click on "Permits", this document opens:

Fig. 055

Another Example: If you click on "Designs and Drawings" this type of document opens:

Fig. 056

Also if you click on "Legal" or "Blueprints" you will pull up any documents available for your property.


The Plats (Survey Plats) tab has a link for "Land Use Department & Planning" which will direct you to their website for information about information on Surveys for a property.

Please contact the Land Use & Planning Department for more information.

Fig. 057

Note: Since this property does not have a Survey deposited on file with the Land Use & Planning Department to view, there is no Surveyor or Firm information listed, and no information listed in the Description field. If there were a Survey on deposited in the Land Use & Planning Department, you could view the Survey , "Download Survey Image", and Print it (the printed survey would have the "Unofficial" disclaimer printed across the page.

Other Views

The Other Views tab has links to Google Street View, Bing Bird's Eye View, and Google Earth. Below each of the View types you get a description of what you will see by using each View.

Fig. 058

  • Google Street View—You can view the property as if you were driving along a street, and change the direction of the view.
  • Bing Bird's Eye View—These satellite photos view a location from the air in a view looking down on a property.
  • Google Earth—This is a "virtual globe", where you can search for most any property around the world!

Example of Google Street View (looking North on Broadway & Pearl Street)

Fig. 059

Same area using Example of Bing Bird's Eye View  (looking Northeast at Broadway & Pearl Street)

Fig. 060

Same area using Example of Google Earth View (looking Northeast toward Pearl Street)

Fig. 061

City Of Boulder

The City Of Boulder tab has a link to the "City of Boulder eMapLink Website" which will take you to their website for information about information on a property within the Boulder City limits.

Fig. 062

Advanced Tools

Fig. 063

The resulting pop-up window has five distinct tabs. Each of these tabs enables you to do additional searches for parcels, or gather additional info on existing selections. We will go over each of these in detail.

Fig. 064

Searching by Latitude and Longitude

Searching by Latitude and Longitude (includes GPS format).

This tab is helpful if you know the coordinates of a parcel but can't use the main search function in E-Mapping because you don't know any additional info about the parcel (i.e. Street Address, Parcel Number, Property Account Number, Subdivision Name, or Owner Name).

To do a search, simply type in the coordinates you are familiar with by selecting one of the 3 options on the left.

Fig. 065

It is always a good idea to follow the Examples shown on the pop-up as closely as possible. This limits the chance that you will return an erroneous result, or that your search turns up empty (i.e. typing a leading 0 in front of the 1 and 8 in the example above will still yield the correct location but putting in a N or W following the coordinates selects the wrong parcel).

Fig. 066

For more information on the conversion of coordinates from Degrees/Minutes/Seconds (DMS) to Decimal Degrees (DD) see DMS & DD 101 at the end of this section.

After entering the coordinate in the correct format hit the Search key to display your results. E‑mapping will zoom to the selected coordinate and place a thumbtack at that location.

Fig. 067

You cannot access detailed property information about this location/parcel until you close the Advanced Tools menu by clicking the X in the upper right-hand corner of the dialog.

With Advanced Tools closed, simply double-click on the parcel you want information about to actively select it. Doing this will highlight the parcel in red and bring up the Parcel Pick List, from which you can open detailed information about the property, create reports etc.

Fig. 068

DMS & DD 101

(Adapted from "GIS Fundamentals"—3rd Edition by Paul Bolstad)

Coordinates are typically shown in degree-minute-second (DMS) notation. In the example above N40° 01' 08" denotes 40 degrees, 01 minutes, and 08 seconds of latitude. As the name implies, minutes and seconds range from zero to sixty. Coordinates may also be conveyed as decimal degrees (DD). Under this system degrees take their normal -180 to 180 (longitude) and -90 to 90 (latitude) ranges, while the minutes and seconds are shown as a decimal portion of a degree (0 to 0.999). Thus, our example above would be shown as 40.0188. DMS can therefore be converted to DD by the following formula:

DD = DEG + MIN/60 + SEC/3600 (Forward and reverse conversion of DMS and DD units shown below)

Fig. 069

Google Earth 101 (GPS)

As mentioned above (Searching by Latitude and Longitude), you can enter your GPS coordinates by selecting Degrees and Decimal Minutes from the Lat/Long tab. The coordinate location will always be highlighted by a green thumbtack as shown below.

Fig. 070

For those seeking more analysis of their GPS data points, Google Earth allows users to search by GPS coordinates as well (Google Earth is a free download available to anyone with an internet connection).

Fig. 071

Additionally, Google Earth contains a utility that allows you to import data from Garmin and Magellan devices, as well as download coordinates from other files stored on your computer. Users can also specify whether to import waypoints, tracks and/or routes.

To access these features simply go to the Tools tab and click on the dropdown that lists GPS. Other settings will depend on the make of your GPS unit and what type of data you wish to highlight.

Fig. 072

Side Note: Should you not want to use E-mapping, Google Earth will also allow for degrees, minutes, seconds as well. Like the GPS format described above, simply type in your coordinates and hit enter.

Fig. 073

Using the Measure Tool

Fig. 077

The measure tool allows you to measure distances in feet, miles, and kilometers. Area calculations can also be done using square feet, acres, miles, and meters. This can be helpful if you are trying to find the approximate distance to a neighborhood park/bus stop, or simply trying to find the area of that vacant lot you have been eyeing for purchase—As with the rest of E-mapping, it is important to remember that these tools are not survey grade, so while it might be nice to see the approximate square footage of your lot they can never replace a survey for accuracy.

Fig. 078

To measure Distances, simply click the bulls-eye next to Distance in Step 1 and then select the desired units from the dropdown under Step 2. Next, when you move your mouse to the main screen on E-mapping you will notice that cursor has changed from an arrow to a small black dot. This means the measure function has been enabled. From here, simply click on your starting point, move your cursor to your desired target and double-click when finished. In a few seconds the unit measured should show up on the bottom left-hand side of the Advanced Tools menu.

You can start a new measurement by clicking on the button marked Clear on the bottom right side of the Advanced Tools menu, or simply by clicking on another location and repeating the process described above. See the image below for further details:

Fig. 079

Fig. 080

Measuring Area is similar to the process above. The only difference is that after completing Step 1 and Step 2 from the Advanced Toolbox menu your cursor will appear as a hand rather than a small black dot. Aside from this difference in symbolism, this new cursor works in identical fashion; simply click to start an area measurement and double-click to end. The Area measurement is also much more interactive - You will get a reading of the calculated area whenever E-mapping can form a polygon with your dimensions. Rather than appearing on the bottom left-hand side of the Advanced Tools menu, all area measurements are shown on E-mappings main screen as shown below:

Fig. 081

TIP: Although E-mapping does all the calculations on the fly, it is always helpful to remember the conversion between square feet and acres.

From the example above: 112,919 Sq. Ft. ÷ 43,560 = 2.5922 acres

Conversely, 2.5922 acres x 43,560 = 112,919 Sq. Ft.

Using the Upload Tool

Fig. 082

The Upload tool allows you to bring in Addresses or Parcel Numbers from an outside source, such as a spreadsheet, and identify them within E-mapping. This can be especially helpful if you have a long list of properties that you need to gather information about and don't have time to interactively select each one. In many instances you may not know the exact location of a property but have a list of addresses from within a particular watershed, special improvement district, neighborhood etc. Using the Upload tool makes finding these a snap.

You may remember the Export to .CSV and Save To File functions outlined earlier in the section on doing a Buffer. Using the Upload tool is the reverse process; instead of generating a file from selected parcels, you are importing a file to identify parcels. And unlike a Buffer, parcels don't have to be contiguous but can scattered throughout the county.

Fig. 083

Uploading by Addresses

Uploading by Addresses can sometimes require a little bit of prep work but is pretty straightforward overall. Before completing steps a–c in the Advanced Toolbar it is always good to take a look at the list of properties you are trying to identify.

Fig. 084

Please note that Excel spreadsheets (.xls or .xlsx) are not supported Only text (.txt) or comma separated values (.csv) files can be uploaded. If you do have an Excel spreadsheet see the additional notes on formatting

E-mapping has come a long way since its introduction and no longer needs field names to recognize addresses for uploading onto the map - In fact, if you have field names such as Address, Street, Location etc., please be sure to remove these. E-mapping now only needs the address itself to identify properties.

If you have additional fields such as City, State or Zip Code, remove these as well

Make sure you include the correct postal abbreviation (i.e. PL, AVE, CIR etc.). If you are not sure of the postal abbreviation, or are getting limited matches in E-mapping, leave it out altogether.

Go From This:

Fig. 087

To this (csv):

Fig. 088

Or this (txt):









Fig. 089

You are now ready to Upload your addresses via the Advanced Tools toolbar

Fig. 090

Parcels with the same addresses as those in your list should now be highlighted on the map.

Additional Navigation Tips:

Fig. 091

Note: It is always good practice to check your data and see if the addresses in your list are Mailing Addresses vs. Site Addresses. For example, if you were to use a list someone gave you from E-mappings Buffer tool to identify properties you may not get the results you expect. This is because the Buffer tool is specifically designed to produce labels for public notice/review etc. and the addresses within are those specified by property owners as their mailing addresses, and not always the site address itself.

Uploading by Parcel Number

Some data you want to upload may contain both a parcel number and a account number. Please be aware that these are different. Only the 14-digit parcel number can be used in the Upload feature of E‑mapping.

Fig. 092

Massaging your Parcel Number files for Upload into E-mapping is pretty much identical to that of Addresses. No field names should be used, and all additional information should be stripped from the .csv or .txt files so that the data appears similar to that below:

Fig. 093

If you hare having difficulty formatting your Parcel Numbers, click here :

You are now ready to Upload your Parcel Numbers (PINS) via the Advanced Tools toolbar:

Fig. 094

Parcels with the same PINS as those in your list should now be highlighted on the map.

See additional Navigation Tips here

General Formatting (.csv to .xlsx or .txt)

Correcting formatting of the Owner Address.csv file using MS Excel

When you open any .csv, Excel incorrectly interprets the Parcel Number column as a number and displays all records it in scientific notation format This can be frustrating if you are trying identify Parcel Numbers downloaded from E-mapping, or wish to use these Parcel Numbers for a reverse upload later on.

Fig. 095

There is a reason for this - Parcel Number is actually an alphanumeric field, 12 characters in length, because some parcel numbers in the Assessor's data actually contain letters as well as numbers. Alphanumeric is also referred to as "string" or "text".

Reformatting can be done in five simple steps

1. With the .csv file still opened, highlight the entire Parcel Number column, right-click, then click on Format Cells :

Fig. 096

2. The Format Cells window appears. You should see that General is highlighted by default in the Category choices, but click on Custom at the very bottom of the list:

Fig. 097

After clicking on the Custom category, more options appear within the window

Fig. 098

3. Still with the Custom category selected, under Type on the right side of the window, enter 12 zeros ( 000000000000 ) Then click the OK button:

Fig. 099

4. You should notice that the values within the Parcel Number column return to normal-looking numbers. You might also notice that parcel number values for some records are justified to the left, rather than the right like numbers.

That's because the parcel number values for these records contain a letter and are already correctly interpreted as string or text values. In the example below, three of the records include the letter "J" as part of their parcel number. This is correct.

Fig. 100

5. Save the .csv file as an Excel spreadsheet (.xls or .xlsx). For Upload into E-mapping (i.e. to map by parcel number) you will need to go one step further and save this .xlsx as a .txt file. This can be done by simply going to Save As > Save as type dropdown.

Using the Multi-Select Tool

Fig. 101

The Multi-Select tool is a convenient way to select multiple parcels without doing a buffer. This can be helpful if there are only a handful of properties you want to pick. Similarly, parcels can often be odd shapes, or follow irregular boundaries (neighborhoods, school districts, watersheds), that can't be neatly contained within a buffer. The Multi-Select tool allows you to interactively select these Adjacent parcels, open detailed information on each property, and create reports for the selected accounts, just like you would with other selection methods.

NOTE: If you need gather data on a group of spatially irregular parcels, it may be easiest to use the Multi-Select tool for those adjacent parcels (produce reports etc.), close the Advanced Toolbox, and then select the outliers one by one with your standard cursor arrow. If you have a list of properties (Excel supported .csv or txt format etc.) the Upload tab discussed above may be equally useful.

Using the Multi-Select tool is about as easy as it gets. As with the Distance and Area tools, you will notice your cursor changes from an arrow to a small black dot. Simply click once to start your selection process and end it by double-clicking anywhere on E-mappings main screen. Those parcels that touched the path of your cursor will be selected.

Fig. 102

Generating Mailing Labels

Producing Mailing Labels from your selected Buffer (Exporting to CSV)

NOTE on added features: CSV functionality was previously limited to the Buffer function Due to public input, exporting to a CSV file has now been added to the Multi-Select tool. Thus, steps 1–2 outlined below mimic those you would use if the parcels in your Parcel Pick List were selected by this tool as well.

Step 1: Saving your selected properties

a) The first step is simply to save the list of selected parcels from the Parcel Pick List. This can be done by hitting the Export to CSV button on the bottom right corner of the Parcel Pick List pop-up.

b) Please note: Personal property accounts (P) appear on E-mappings list of selected properties, as well as the final output when you Export to CSV. It is often a good idea to check with your local city planning office to find out if these business/personal properties require notification If not, remove them from the exported csv file before you generate mailing labels. Real property (R), state assessed (U), oil and gas (O), and mobile homes (M) are included in the final output and almost always require notification by local planning departments.

Fig. 103

c) After hitting the Export to CSV button you will get another pop-up letting you know that E‑mapping is processing your list of properties and getting them in the correct format to download. When this process is complete another pop-up will appear indicating that Formatting is Complete and asking you whether you would like to save the file. Hit OK, move your cursor back to the Parcel Pick List and hit the Export to CSV button which has now changed to Save To File.

Fig. 104

d) Next, a Save As dialog will pop up. Type in the path where you would like to save the list of properties, name it accordingly, and leave the Save as type as .csv file.

Fig. 105

Step 2: Taking a look at the list itself

a) When you open your downloaded file take a moment to familiarize yourself with the headings related to each column. This list is what your labels will be generated from. As you can tell, some of the data will need to be removed as to not confuse your mail carrier. This does not need to be done in this step in the process but it is helpful to know not to select AccountNumber or ParcelNumber when doing your Mail Merge in the following steps.


Fig. 106

→ Not applicable to labels: Multi-Select tool: If you are producing mailing labels you typically don't care about the AccountNumber or ParcelNumber. However, if you are doing a download from CSV with the Multi-Select tool and want the parcel numbers in the correct format you may need to 1) right-click on the ParcelNumber column 2) select Format Cells 3) select the Number tab 4) and select Number again from Category and change the decimal point places to 0.

Creating Mailing Labels

Step 3: Creating Labels in Microsoft Office 2010

After opening up Microsoft Word:

a) Go to the Mailings tab and bring up the Start Mail Merge pull-down. Pick Labels from the list of options.

Fig. 107

b) The next pop-up will let you select from a pre-formatted list of labels and sizes. Pick whatever type is applicable for you mailing needs and hit OK .

Fig. 108

c) While still under the Mailings tab, hit the button for Select Recipients and choose Use Existing List from the pull-down menu. Navigate to where you had saved your list of properties (.csv file) and hit OK .

Fig. 109

d) You may notice that your labels are not yet fully filled in. Don't worry about this. You will do this in the next couple of steps.

Fig. 110

If you did not get to the screen above you may have selected a sheet on the .csv file that was not applicable. This can happen if you modified your list of properties beyond the basic download from E-mapping, or used an existing list not generated from E-mapping. If this is the case, you should get a pop-up directing you to pick the applicable sheet (i.e. Select Sheet 1$)

e) Select the Address Block button (under Mailings). This will prompt you to the Insert Address Block pop-up. Make sure you hit the Match Fields button in the bottom right of the dialog. This will prompt yet another pop-up called Match Fields. If you think back to Step 2, line a) this is where you will select the appropriate data for your labels. You will need to hit OK on both windows for the changes to take effect.

Fig. 111

f) Your labels are almost complete. Next, hit the Update Labels button (still under the Mailings tab) and immediately after, Preview Results. It isn't until this step that you will actually see names and addresses fill the labels correctly.

Fig. 112

g) Keep in mind that this list is still only a Preview of the labels. To get the entire list hit the Finish & Merge button and then Edit Individual Documents from the resulting pull-down menu. Next select All under Merge to New Document. This step will generate another word.doc where you can save the whole list and name it appropriately.

Fig. 113

h) Congratulations! You are finished. Enter whatever type of labels you have into your printer and print.

Thank you

We welcome your suggestions

Contact the Assessors Office 303-441-3530



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