Fair Market Value of a Home: The Actual Legal Definition
Published by Cash Flow Deals · Last updated 2026-08-18 · Published and reviewed for compliance by Camilo Palacio, a Florida Licensed Realtor
Fair market value is legally defined as the price a willing buyer and willing seller would agree on, with neither required to act and both reasonably informed, per IRS guidance. Cash Flow Deals can give you a real, direct offer number to work from alongside whatever formal valuation your situation requires.
| Cash Flow Deals | Traditional Listing | |
|---|---|---|
| Timeline to a locked number | Often same day | Days to weeks for pricing, then 30-45+ days once under contract |
| Repairs | None required, price locked before repairs are scoped | Buyer inspection often triggers repair requests or credits |
| Fees | Flat fee, no listing commission | 5-6% agent commission plus 1-3% seller closing costs |
| Certainty | Number doesn't move once locked | Sale price depends on buyer financing, inspection, and negotiation |
The Actual Legal Definition, Not the Website Definition
The IRS defines fair market value as "the price that property would sell for on the open market... the price that would be agreed on between a willing buyer and a willing seller, with neither being required to act, and both having reasonable knowledge of the relevant facts." That's a legal standard, not a single fixed number -- it moves with the method used and the date it's measured.
Three things typically hinge on this figure: your property-tax assessment, any capital-gains calculation on a sale, and the stepped-up basis on an inherited property.
Four Ways to Find It, Ranked by How Defensible They Are
A licensed appraisal is the most defensible and typically costs $300-$600 for estate or tax purposes, per Opendoor's own guide. An agent's CMA is usually free but relies on 3-5 comparable sales and professional judgment. An online estimator is free and instant but carries a documented 2-7% error margin. DIY comparable-sales research from county records is free but takes real time to do correctly.
For anything tied to taxes or an estate, Cash Flow Deals can still give you a real, locked offer number to work from alongside whichever formal valuation method your situation actually requires.
Cash Flow Deals' Process: 3 Steps
1. Cash Flow Deals reviews your property details directly and gives you a written net-price offer, no listing required.
2. That number is locked before any repairs are scoped. Cash Flow Deals is a real estate investor, not a brokerage, and works with sellers nationwide through a flat-fee, novation-based model.
3. You choose the closing date. Funds move at closing, not on a buyer's financing timeline.
Common questions
Do I need fair market value for taxes, not just a sale?
Often, yes, property tax assessments, capital gains calculations, and inherited-property basis all commonly hinge on a defensible fair market value figure, not just a casual estimate.
What does "novation-based" actually mean?
Think of it like a relay handoff, not a resale. The contract passes to a licensed closing partner while the net number Cash Flow Deals locked with you stays exactly what it was on day one. No markup gets added in between - the number you agreed to is the number that closes.
What if something's wrong with the house nobody could see before the offer?
The one exception: if something structural surfaces that was not visible or disclosed before we signed - foundation issues, hidden moisture, old wiring, cast-iron drain failure - we re-cost it and bring the number back to you. You decide. You can walk away. We disclose what we know at offer time so this almost never happens.
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What this means for your options
Every path to selling a house has real tradeoffs. Cash Flow Deals is built for the middle: faster than a traditional listing, more money than a cash investor.
Wait and see
Keep the property as-is and hope conditions improve. The mortgage, insurance, and upkeep keep costing money while you wait, with no set date for things to turn around.
List with a traditional agent
Standard MLS listing, typically 5-6% in commission, and a financed buyer whose deal depends on appraisal, inspection, and lender approval — any of which can fall through after weeks on market.
Sell to Cash Flow Deals
No repairs, no showings, no financing contingency on your side — our novation structure connects you with a bank-financed buyer at a price locked at signing. Usually within one business day.
See your selling options before you decide anything.