Boulder County's mass-appraisal model uses broad area averages that routinely over-value smaller, older, or less-featured homes. We build your appeal using the county's own data.
Three steps from "I think I'm over-assessed" to a complete, ready-to-submit appeal.
Fill out a 5-minute form with your address, assessment notice details, and what you know about your property's condition and features.
We pull Boulder County's own comparable sales records and apply the same valuation methodology the assessor uses — then identify where your property was overvalued.
Within 48 hours, you get a complete professional appeal report with comps, analysis, a formal appeal letter ready to sign, and a step-by-step submission guide.
County assessors value thousands of homes at once. The math favors averages — not your specific property.
The county applies the same appreciation rate to your 1960s ranch as a fully remodeled 2010 home — ignoring decades of functional obsolescence.
Small homes (under 1,100 sq ft) are assessed at up to $976/sq ft when comparable sales data shows the actual market range is $546–$772/sq ft.
Your street may trade 15–20% below the broader neighborhood average — due to traffic, lot size, or block character — but the county doesn't adjust for it.
Missing a full bath? No garage? Backing to an arterial road? Each has a quantifiable value reduction the county model often misses on individual properties.
Your report is professionally structured and directly cites county data — the same source your assessor will use to evaluate your appeal.
Sales matched to your square footage range from Boulder County's official dataset — the gold standard for appeal evidence.
Quantified evidence of any geographic price discount specific to your block or immediate area versus the broader neighborhood.
Formula-based adjustments for age, size, bathrooms, garage, and location — derived from county sales data, not guesswork.
Sales comparison and regression-based approaches reconciled into a defensible single value estimate for your property.
Ready to sign and submit. Cites all evidence, references county methodology, and requests the specific assessed value reduction.
Direct links to Boulder County's online appeal portal, deadline info, and escalation instructions for BOE and BAA hearings.
Choose the level of analysis that fits your property and situation.
We don't guess. We use the same sources and methods the assessor uses — and show where they got your property wrong.
Based on Boulder County's 2025 comparable sales dataset — the official record used for all assessments.
Methodology derived directly from official county appraisal documentation and CAMA valuation standards.
Reports typically support 15–28% reductions in assessed value based on comparable analysis.
Reports delivered within 48 hours of order — well before Boulder County's appeal deadline.