No Comps in My Area: How to Price a Home When the Data Runs Out
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Short answer
Widen in this order: time first, then geography, then similarity — never similarity first. An older sale of a genuinely similar house beats a recent sale of a different one. If that still fails, switch methods: cost approach for new or highly custom builds, income approach where rental demand is real, and bracketing with actives, pendings and expireds to establish a defensible range. Say plainly in the report that the data is thin — a stated range with three comps is more credible than six comps of which three are fiction.
"There are no comps for this house" is usually not true. What is true is that there are no easy comps, and the honest response is to widen deliberately rather than to lower your standards quietly.
The difference between those two matters. One produces a wider range you can defend. The other produces a narrow number that is wrong.
First: this is more common than it feels
FHFA analysed a 5% nationally representative sample of US appraisals from 2013 to 2021. The findings put thin comp sets in context:
- The average and median number of comps per appraisal was five.
- About 13% of appraisals used exactly three — the permitted minimum.
- Roughly 68% used five or more, but that share fell from 76% in 2013 to 59% in 2021.
- By geography, the share with five or more was under 61% in rural areas against about 75% in high-density urban ones.
- By state it ranged from 34% in Mississippi to 90% in California.
So: thin comp sets are normal, they are getting more common, and where you are matters enormously. If you are in rural Mississippi you are not doing it wrong.
The expansion order
When the obvious search returns nothing usable, widen one dimension at a time, in this order. The order is the whole point.
1. Widen time first
An 11-month-old sale of a genuinely similar house is better evidence than a 3-week-old sale of a different one. You can adjust for market movement using published index data; you cannot adjust your way out of a property that is not comparable.
Fannie Mae says comparables closed within the last 12 months should be used, but explicitly permits older sales where market conditions prevent finding recent ones, with explanation. Go back 12 months, then 18, then 24, applying a market-conditions adjustment as you go.
2. Widen geography second
There is no maximum distance. Fannie Mae requires the distance to be stated — in miles, with a direction, like "4.2 miles NW" — but sets no cap. Multi-mile comps are routine and accepted in rural work.
Widen to genuinely similar submarkets, not to whatever is nearest. A comparable acreage property eight miles away in a similar school district and price tier is better than a tract house two miles away on a quarter-acre lot.
3. Relax similarity last, and only within limits
This is the expensive one, because every step away from similarity is another adjustment, and adjustments accumulate error. Relax in this order: lot size, then age, then above-grade square footage, then finally bed and bath count.
Never relax property type. A single-family detached house and a townhouse are not the same asset, at any distance or date.
When sales comparison still isn't enough
Sometimes the sales approach genuinely runs out. Then you change method rather than pushing a bad comp set harder.
The cost approach
Land value plus the depreciated replacement cost of the improvements. Weak for ordinary resale housing, because buyers do not price homes this way. Genuinely useful for:
- New construction, where cost and value have not yet diverged
- Highly custom homes with no market equivalent
- Properties with unusual outbuildings, workshops or barns
The hard part is land value, which needs its own comps — and vacant land sales are often even thinner. But land comps are a different, sometimes better-populated pool than improved-property comps, so it is worth checking.
The income approach
Where a genuine rental market exists, capitalising rent gives an independent check. Rarely primary for owner-occupied housing, but it can bracket a value when nothing else does — see rental comps vs. sales comps.
Bracketing with what didn't sell
The most underused technique in thin markets, and free.
- Active listings set the ceiling — a buyer will not pay more than the alternative available now.
- Pending sales are the freshest signal you have, since they reflect agreements made weeks ago rather than months.
- Expired and withdrawn listings set the failure line. A property that sat six months at $740,000 and never sold has told you something precise about $740,000.
Fannie Mae permits contract offerings and current listings as supporting data. In a thin market they often carry more real information than a stale sale.
Special cases
| Situation | What to do |
|---|---|
| Acreage | Value the land and the improvements separately. Per-acre value falls as acreage rises — do not extrapolate linearly. |
| Brand-new subdivision | Use the builder's own closed sales, and pendings in the project. Fannie Mae permits two pending sales in the subject project in lieu of one settled sale, alongside at least three settled comps from outside. |
| Custom or architect-designed | Cost approach weighted more heavily; find sales in the same price tier even if the style differs. |
| Historic | Look for other historic properties across a wider area — the buyer pool is regional, not local. |
| Mixed-use or live-work | Value components separately; the residential comps alone will mislead. |
Say that the data is thin
The most important step, and the one people skip because it feels like an admission of weakness.
A report that says "three comparable sales were available; the market for this property type is thin and the indicated range is correspondingly wider" is more credible than one presenting six comps where three plainly are not comparable. The first shows judgment. The second invites the reader to find the weak comp themselves — and they will.
In thin markets, give a range rather than a point estimate, and say what would narrow it.
The bottom line
Thin comp sets are normal — more than 40% of recent US appraisals used four or fewer, and rural areas are measurably worse. The failure is not having few comps; it is padding the set to look thorough.
Widen time, then geography, then similarity, in that order. Change methods when sales comparison genuinely runs out. Bracket with actives, pendings and expireds. State the limitation plainly and widen the range to match.
Frequently asked questions
What do appraisers do when there are no comps?
They widen the search in time and distance and explain why. Fannie Mae sets no maximum distance for a comparable and permits sales older than 12 months where recent ones are unavailable, provided the appraiser explains the selection. The task shifts from finding perfect matches to demonstrating that the sales used are the best available indicators of value.
How far can comps be if there are none nearby?
There is no fixed maximum. Fannie Mae requires the distance to be stated in miles with a directional indicator but sets no cap, and comparables several miles away are routine and accepted in rural appraisals. What matters is that the appraiser explains why the more distant sale is the best available evidence.
Can you appraise a house with only two comps?
Not for most lending purposes. Fannie Mae requires a minimum of three closed comparable sales in the sales comparison approach. Where fewer genuinely similar sales exist, the appraiser widens the search or supports the analysis with the cost approach and with listings and pending sales as supplementary data.
How do you value a unique or custom home?
Usually by combining approaches. The cost approach — land value plus depreciated replacement cost of improvements — carries more weight than usual for new or highly custom construction, because the sales comparison approach has little to work with. Bracketing with current listings and expired listings helps establish the ceiling.
Are comps harder to find in rural areas?
Measurably. In FHFA analysis of a 5% national sample of appraisals from 2013 to 2021, the share of appraisals with five or more comparables was about 13 percentage points lower in rural areas than in high-density urban ones — under 61% rural against roughly 75% high-density urban.
Sources
- FHFA, "Counting Comps: Exploring the Number of Comparable Properties in Home Appraisals," using the Uniform Appraisal Dataset Appraisal-Level Public Use File — a 5% nationally representative random sample of appraisals from 2013 through 2021. Share of appraisals with five or more comps: under 61% in rural areas, about 67% low-density urban, about 75% high-density urban. Average and median comps per appraisal: five. Share with 5+ comps fell from 76% in 2013 to 59% in 2021. State range: 34% (Mississippi) to 90% (California).
- Fannie Mae Selling Guide B4-1.3-08, "Comparable Sales" (effective 06/04/2025) — minimum three closed comparables; comparables closed within the last 12 months should be used, though older sales may be appropriate where market conditions prevent finding recent ones; contract offerings and current listings may be used as supporting data; no maximum distance is specified, and distance must be reported in miles with a directional indicator.