Honest comparison · 2026
Best property tax appeal services in Colorado (2026)
The best property tax appeal services in Colorado for 2026 include AppealMyTax (a $49 flat-fee packet you file yourself), Ownwell (a contingency firm that files for you, listing 35% of savings in Colorado), and Downey & Associates (a Denver property tax law firm). Colorado assessors mail a Notice of Valuation (NOV) by May 1; homeowners protest to the assessor in early June (the exact date is printed on your notice), then escalate to the County Board of Equalization (CBOE) if denied. Here is how the options compare on fee and who does the work.
| Service | Fee | You keep on a $3,000 saving | Comp data |
|---|---|---|---|
AppealMyTax $49 Audit Filing or valuation output (you file) · $29 DIY kit: all 50 states + D.C.; $49 Audit: evidence varies by county and address | $49 flat, one time | $2,951 | Public county records; comparable evidence only where usable. Filing or valuation output depends on findings. The $29 kit requires your own evidence. |
Ownwell Done for you · Colorado (and 8 other states) | 35% of savings (Colorado), every year | $1,950/yr | Their analysts assemble the evidence and file on your behalf; Colorado is an active market per Ownwell's own site |
Downey & Associates Done for you · Colorado (property tax attorneys) | Law-firm fees, quoted directly (not publicly listed) | Varies | Denver property tax law firm; handles all stages of a Colorado protest, fees quoted on consultation |
$3,000 is an illustrative annual saving. Fees are each provider's publicly listed pricing as of June 2026; verify on their sites.
How the Colorado appeal process works
Colorado assessors mail a Notice of Valuation (NOV) by May 1. Homeowners protest to the assessor in early June (the date is on the notice). If the assessor denies the protest, you can appeal to the County Board of Equalization, and beyond that to the Board of Assessment Appeals, binding arbitration, or district court. Values are set in odd-numbered reassessment years.
Full step-by-step guide on our Colorado property tax appeal page, or see the data behind it in our nationwide over-assessment study.
The honest verdict
Choose based on your property, evidence and how much work you will do yourself. Our $29 national DIY kit provides guidance and worksheets; you gather the evidence. The $49 Audit depends on county/address records and provides the filing or valuation output they support. Searchable records are not a promise of comparable sales. Managed services may file and represent you; compare their current local terms. No provider can guarantee an identical outcome or lasting savings.
More on why we are flat-fee and how to vet any appeal service on our honest comparison page, or run your own numbers in the fee calculator.
Frequently asked questions
What is the best property tax appeal service in Colorado?
AppealMyTax is a $49 flat-fee packet you file yourself and keep 100% of the savings. Ownwell files your protest for you on contingency (35% of savings in Colorado). Downey & Associates is a Denver property tax law firm that quotes its fee directly. The right choice depends on whether you want to protest yourself or hand it off.
Does Ownwell operate in Colorado?
Yes. As of 2026, Ownwell lists Colorado as an active market on its own site, with a 35%-of-savings contingency rate and a Denver appeal deadline. Some competitor marketing claims Ownwell exited Colorado, but Ownwell's own primary source contradicts that.
When is the Colorado property tax protest deadline?
Early June, the exact date is printed on your Notice of Valuation, which assessors mail by May 1. Recent law has shifted the date for some counties, so rely on your notice rather than assuming June 1.
Is there a fee to protest property taxes in Colorado?
No. Protesting to the assessor and appealing to the County Board of Equalization are both free. A flat-fee packet ($49) or a contingency firm is an optional cost for help with the evidence and filing.
Prepare your own appeal in Colorado
The $29 DIY kit includes state process guidance, fillable evidence worksheets and an editable letter. You gather your property evidence and file yourself; property-specific comparables are not included.
View the Colorado DIY kit · $29See a Colorado worksheet excerpt
Want to check available property records first? Coverage and comparable evidence vary by address. Where supported, the results explain what the separate $49 Property Assessment Audit includes before you buy. A records check does not establish that you are overassessed.
Check available Colorado property records · Free
You can prepare before your filing window. Verify your current local deadline; buying a kit does not extend it.