FairValue — Property Tax Protest Letter Generator
FairValue by RedTools generates a professional property tax protest letter backed by real comparable sales data. Enter your address, confirm your property details, and get a polished appeal letter ready to file with your local appraisal district — for free comp analysis or $25 for the complete letter.
Last updated: April 30, 2026
How FairValue Works
- Enter your address. FairValue validates the address and pulls public assessment data from your county appraisal district.
- Confirm your property attributes. Verify square footage, bedroom and bathroom counts, lot size, and condition. Correcting factual errors alone can support a reduction.
- Review comparable sales. Our comp engine identifies the strongest recent sales near your property, scored on proximity, size match, age match, and recency.
- Generate your protest letter. The Full Service tier produces a complete, professionally formatted appeal letter with comp tables, valuation analysis, and filing instructions for your jurisdiction.
- File with your appraisal district. Download as PDF or DOCX and submit before your local deadline.
Pricing & What You Get
| Tier | Price | Includes |
|---|---|---|
| Free | $0 | Up to 5 sale comparables, up to 5 rental comparables, basic property data, PDF export. |
| Full Service | $25 | Up to 15 sale & rental comps, detailed property data, advanced comp selection mode, professional appeal letter, tax authority filing instructions, PDF & DOCX downloads. |
No subscriptions. No percentage cuts of your tax savings. Traditional property tax consultants charge $300–$500 or take 30–40% of your savings — FairValue is a flat $25 with the same comp-based methodology.
Why Comp-Based Protests Win
Property tax appraisal review boards consistently respond to verifiable market data over arguments about affordability or fairness. The single highest-impact piece of evidence is a clean set of recent comparable sales similar to your property in size, age, and location. Read more about how FairValue selects comps.
Who FairValue Is For
- Homeowners who received an assessment notice they believe is too high.
- Property owners who want to file a protest themselves but don’t want to spend hours pulling comps.
- Anyone facing a $300–$500 tax consultant bill who’d rather keep 100% of their savings.
Frequently Asked Questions
What is FairValue?
FairValue is RedTools’ property tax protest letter generator. It identifies the strongest comparable sales for your property, calculates your fair market value, and produces a professional protest letter you can file with your local appraisal district. The free tier includes comp analysis at no cost; the $25 Full Service tier adds advanced comp selection, a complete appeal letter, and filing instructions.
How much does FairValue cost?
FairValue’s comp-analysis tier is free. The Full Service tier is a one-time $25 for a complete protest letter, advanced comp selection, tax authority filing instructions, and PDF + DOCX downloads. There are no subscriptions and no percentage cuts of your tax savings.
How does FairValue compare to a property tax consultant?
Traditional property tax protest consultants typically charge $300–$500 up front or take 30–40% of your tax savings. FairValue’s Full Service tier is a flat $25 with the same comp-based methodology used by professional consultants. You keep 100% of your savings.
What states does FairValue support?
FairValue works in every U.S. state. Our protest letter generator includes deadline references and procedural guidance for major jurisdictions including Texas, California, Florida, New York, New Jersey, Illinois, Georgia, and Arizona, with national best-practices for the rest.
Do I need an account to use FairValue?
You can run a free comp analysis without an account. An account is required for the $25 Full Service tier so we can save your protest letter and let you re-download it later.
What is a comparable sale (comp)?
A comparable sale (comp) is a recently sold property similar to yours in size, age, condition, and location. Tax appraisers and real estate professionals use comps as the primary method for estimating market value. The strongest comps are within one mile of your home, sold in the last 12 months, and within 20% of your home’s square footage. FairValue automates the search and scoring.
How long does it take to generate a protest letter?
Most users complete the FairValue flow in under 10 minutes. The comp engine runs in seconds; the letter is generated in under a minute once you confirm your property attributes. The result is a polished protest letter ready to file.
State-Specific Resources
- Texas Property Tax Protest Guide
- California Property Tax Protest Guide
- Florida Property Tax Protest Guide
- New York Property Tax Protest Guide
- New Jersey Property Tax Protest Guide
- Illinois Property Tax Protest Guide
- Georgia Property Tax Protest Guide
- Arizona Property Tax Protest Guide
- Harris County Property Tax Protest Guide
- California Proposition 8 Reassessment
Get Started
Run a free FairValue comp analysis on your property. Find out in minutes whether you’re over-assessed.