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1

Your Property

Enter your street address including city and zip code. Use the address exactly as it appears on county records.
Please enter your property address.
?Your account number starts with "R" followed by 7 digits (e.g. R0012345). It appears on your Notice of Valuation (NOV) or property tax bill.
Don't know it? Look it up on the Boulder County Assessor site → (search by address)
?This is the "Actual Value" shown on your Notice of Valuation (NOV), not your tax bill amount. It's the county's estimate of your home's market value.
Find this on your Notice of Valuation (NOV) or look it up online →
Please enter your assessed value from your NOV.
?The assessed value from your previous NOV, if you have it. Helps us show the year-over-year increase in your appeal.
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About Your Property

?The original construction year of the main structure. Check your NOV, county records, or your home's listing history.
Please enter the year built.
?Above-grade means all finished living space above ground level — not including the basement. This is how the county measures and compares homes. Check your NOV or county records for the official figure.
Please enter the above-grade square footage.
?Total finished square footage including any finished basement. A finished basement adds less value per square foot than above-grade space — knowing both helps us build a stronger argument.
?Number of bedrooms as listed in county records. If your count differs from the county's record, that discrepancy can be part of your appeal.
Please select the number of bedrooms.
?Count full baths (toilet + sink + tub/shower) and partial baths. A half bath (½) has no tub/shower. A ¾ bath has a shower but no tub. Use the county's figure if you have it.
Please select the number of bathrooms.
?Ranch: single-story, all living on one level. Two-Story: two full floors above grade. Split-Level: entry between two half-floors. Bi-Level: two levels split by a half-flight of stairs at the entry. Townhome: attached multi-story unit. Condo/Apartment: unit within a larger building.
Please select your home style.
?Garage type affects assessed value. No garage or only a carport typically reduces value compared to an attached garage, which can be a useful comparison point in your appeal.
?Arterial roads are high-traffic streets (like 28th St, Diagonal Hwy, Arapahoe Ave). Homes on busy roads typically sell for less than comparable homes on quiet streets — this difference is often ignored in mass appraisals.
?If your home sold or was listed recently, that price is strong evidence for your appeal — especially if it's below your assessed value.
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4

Photos (Optional)

Upload up to 5 photos that support a lower valuation — condition issues, road noise proximity, adjacent issues, etc. Photos are optional but can strengthen your case.

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