The Comparable Sales Framework — What Data Actually Matters

Accurate Westchester home pricing requires analyzing the right data points — not a broad average, not peak-market sales, and not what a neighbor's Zillow estimate says.

90-day window: Comparable sales older than 90 days are increasingly unreliable anchors for current pricing in a market where conditions shift seasonally. Use the last 90 days; if there are fewer than 3-4 relevant closes in that window, extend to 6 months with an explicit note that older sales carry less weight.

Same school district: Westchester prices are school-district-specific. A comparable sale on the Edgemont side of the Greenburgh boundary is not a comp for a property on the non-Edgemont side of the same street. Confirm district assignment for every comparable you use.

Closed prices, not list prices: List prices are seller opinions. Closed prices are market reality. A neighbor's current listing at $1.45M tells you what they hope to get; the three comparable homes that closed at $1.28M-$1.32M tell you what the market will pay.

Adjustments for differences: Square footage, bedroom/bathroom count, lot size, condition, garage, basement finish, and age of systems all require adjustments when comparing your property to closed sales. Your agent should quantify these adjustments with market-supported dollar figures, not guesses.

For the pricing mistakes that cost sellers the most, see Westchester pricing mistakes sellers make.

The Cost of Overpricing — Why Testing the Market Backfires

The most common Westchester seller mistake is testing the market with an above-comparable ask — "let's see if we can get $1.45M before we'd accept $1.32M." This strategy consistently backfires for a specific mechanical reason.

The first two weeks of a listing are when the most motivated, most informed buyers are paying attention. These buyers have been watching the market, have their financing in order, and know the comparable sales as well as the listing agent does. If the listing appears 10% above comparable sales, these buyers pass — not negotiate, pass. They move on to correctly priced listings or wait for a reduction.

After 30-45 days with no offers and no showings, the seller reduces the price. The reduction now signals to the remaining buyer pool that something was wrong with the property — "why has it been sitting?" — and anchors buyers below the reduced price rather than at it. The seller who listed at $1.45M, reduced to $1.35M, and finally closed at $1.22M would have had a better outcome listing at $1.28M from day one — faster sale, more competitive offers, and almost certainly a higher final price than the deflated close produced by the extended DOM.

For the agent selection process that should produce accurate pricing, see choosing a listing agent for your Westchester home in 2027.

How to Evaluate a Pricing Recommendation From Your Agent

A well-supported pricing recommendation from a Westchester listing agent includes: the specific comparable closed sales used (addresses, closed dates, closed prices, PPSF), the adjustments made for differences between each comparable and your property, the resulting supported price range (not a single number), and a recommendation within that range based on the specific listing strategy (list at the midpoint for a normal marketing period, list at the lower end if a fast sale is prioritized, list at the upper end only if the agent can specifically justify a premium).

Pricing recommendations that don't show their work — that produce a suggested list price without the comparable sales analysis behind it — should be questioned. The most common form of agent overpricing: suggesting a high list price to win the listing with the intention of reducing later. This practice benefits the agent's pipeline (more time to find the buyer) at the seller's expense (extended DOM and lower final price).

The agent who gives you the highest suggested list price is not necessarily the best agent — they may be the most optimistic or the most willing to list at your preferred price regardless of market data. The agent whose CMA is the most rigorous and whose price recommendation is the most defensible by data is the more reliable choice.

For the full picture of what drives preparation and pricing alignment, see preparing your Westchester home for sale in 2027.

Frequently Asked Questions