Assessor Valuation & Taxes

Dear Flood-Impacted Residents,

The Boulder County Assessor’s Office is working to assist county residents reach a temporary fair market value for any home or real property that was destroyed in the September floods. Based on our statutory guidelines, we are writing to let you know how your property values will be affected in the aftermath of the flood.

We understand what a difficult and challenging time this is for many county residents. Our assessment teams have been giving us daily accounts of the losses and difficulties many of you have endured, and with this in mind we are striving to do our best to assist you by whatever means we can.

For many of you, your property values, which are used to determine your annual property tax payments, will be adjusted downward to reflect the destruction to your physical residence. In all cases your land values will hold their value, but your constructed buildings (also referred to as “improvements”) will be prorated to reflect the reduction in value caused by the flood.

A proration in property value for destroyed structures (resulting in a reduction of 2013 taxes) will be calculated for the dates of Sept. 12 through Dec. 31 of 2013.

Our guidelines for prorating are based on the amount of destruction to the structure which must be severe enough to make it unsafe. Conditions severe enough to qualify include: buildings moved off of their foundations, collapsed walls or roofs, interior water level above the door knob of the first floor, or the building leaning at an unintended angle which would require a rebuild.

Our appraisers are in the field now to assess properties destroyed, make adjustments to the value of improvements, and complete our office’s initial assessment of destruction before our final certification in early December. We are also using other sources of data including information from various government and non-governmental entities and aerial photography and satellite images before and after the flood.

Damaged and destroyed properties will be re-evaluated next year and adjusted according to how much land and improvement impact there is, whether a destroyed building is being or has been rebuilt, and whether the property has suffered significant market impact. These properties will be reevaluated at the beginning of each subsequent year until they have recovered.
For those of you who considering taking more time to rebuild on your lot, state laws allow us to keep the residential classification in place for your property even if the structure hasn’t been rebuilt for up to two years after the year of destruction. In these cases, the residential land classification (which equates to a lower tax rate) remains in place for at least two subsequent property tax years, and up to five subsequent tax years if the assessor determines there is evidence the owner intends to rebuild or locate a residential improvement on the land.

Please feel free to contact our office at 303-441-3530 to inform us about flood impacts to your property.

Additionally, we know many of you are living away from your home and may have a temporary address where you are receiving mail. If you could please call or email us with a forwarding address, that would greatly benefit us in being able to get in touch with you directly about any impacts to your home’s value. Our email address is:

On behalf of myself and my team of appraisers, we send you our best wishes as you go through this difficult period of reconstruction and repair.


Jerry Roberts
Boulder County Assessor


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