Appeals Calendar

When submitting your real property appeal to the Boulder County Assessor's Office, please keep in mind the following timelines, dates and processes.

Please note that if a deadline falls on a Saturday, Sunday or a legal holiday, it is legally extended to the following business day. For example, if the June 1 deadline occurs on a weekend, then the deadline would be the following Monday. 39-1-120(3), C.R.S.

Real Property
Not later than May 1 Assessor mails real property Notices of Valuation.
May 1 through June 1

Assessor hears appeals to real property valuation.

Mailed appeals must be postmarked on or before June 1.

Appeals delivered in person will be accepted through 5:00 PM on June 1.

Online and faxed appeals must be time-stamped no later than 11:59 pm on June 1 to be ON TIME.

Please be sure to allow enough time in the event that others are also submitting their appeals at the last minute.

After June 1 Online and faxed appeals time-stamped after 11:59 pm June 1, mailed appeals postmarked, or appeals submitted after June 1 are LATE. Your property value will be reviewed, but by filing after June 1 you have forfeited the right to further appeal.
On or before August 31 Assessor mails Notice of Determination on real property appeals.
On or before September 15 Taxpayer files a written real property valuation appeal to the Board of Equalization (BOE).
Business Personal Property
Not later than June 15 Assessor mails personal property Notices of Valuation.
June 15 through June 30

Taxpayer submits appeals to personal property valuation.

Mailed appeals must be postmarked on or before June 30.

Appeals delivered in person will be accepted through 5:00 PM, June 30.

Online and faxed appeals will not be accepted if time-stamped after 11:59 pm, June 30.

Please be sure to allow enough time in the event that others are also submitting their appeals at the last minute.

June 15 through July 5 Assessor hears appeals to personal property valuation.
After June 30 Online and faxed appeals time-stamped after 11:59 pm June 30, mailed appeals postmarked, or appeals submitted after June 30 are LATE. Your property value will be reviewed, but by filing after June 30 you have forfeited the right to further appeal.
Not later than August 31 Assessor mails Notice of Determination for personal property appeals.
Not later than September 15 Taxpayer files a written personal property appeal to the Board of Equalization, (BOE).
Board of Equalization (BOE)
Not later than November 1 BOE concludes hearings on property valuation appeals.
Within 5 days of rendering BOE decision BOE mails decisions on real and personal property appeals.
Not later than 30 days after BOE decision Appeals from BOE decisions must be filed with the Board of Assessment Appeals, district court, or the Board of County Commissioners for binding arbitration.

Please note that if a deadline falls on a Saturday, Sunday or a legal holiday, it is legally extended to the following business day. For example, if the June 1 deadline occurs on a weekend, then the deadline would be the following Monday. 39-1-120(3), C.R.S.

Jerry Roberts, Assessor

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Contacts

Assessor

Main: 303-441-3530
Alternate: 303-441-4830
Fax: 303-441-4996
 
Mailing Address
Main: PO Box 471
Boulder, CO 80306-0471
 
assessor@bouldercounty.org
 
bouldercountyassessor.org
 
Business Personal Property
Main: 303-441-3316
Fax: 303-441-1783
 
Mailing Address
PO Box 1759
Boulder, CO 80306-1759

Boulder

1325 Pearl St., 2nd floor
Boulder, CO 80302
Map & Directions
Hours: 8 a.m.-4:30 p.m. M-F

Longmont

529 Coffman Street, Suite 120
Map & Directions
Hours: 8 a.m.-4:30 p.m.
Mondays ONLY

Lafayette

1376 Miners Dr., Unit 105
Map & Directions
Hours: 8 a.m.-4:30 p.m.
Tuesdays ONLY

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