Determine the price per square foot for a property and compare it against up to three comparable sales. See if a property is priced above or below market average based on price per square foot analysis.
Price per square foot ($/sqft) is the most widely used real estate comparison metric — divide the total price by the living area in square feet, get a single number that makes properties of different sizes directly comparable. A $400,000 home with 2,000 square feet of living area is $200/sqft; a $500,000 home with 2,500 square feet is also $200/sqft. Same value per unit of space, just different size.
The metric is useful because square-foot pricing in a given neighborhood is reasonably stable, despite home prices varying substantially. A neighborhood where homes routinely sell at $200–$220/sqft tells you a lot about the area — and a listing in that area at $280/sqft is overpriced regardless of how the absolute dollar figure compares. Conversely, $160/sqft is a meaningful discount worth investigating (the property may have problems, or it may be undervalued).
This calculator computes the price per square foot for a subject property and up to three comparable sales. It identifies whether the subject is priced above or below the comp average — which is the foundation of any real estate price negotiation, appraisal, or investment analysis. Be aware of the limitations: square-foot pricing ignores lot size, condition, age, finishes, and location nuances within a neighborhood. Use it as a starting point, not the final word.
Subject: $475,000 at 2,400 sqft = $198/sqft Comp 1: $440,000 at 2,200 sqft = $200/sqft Comp 2: $495,000 at 2,500 sqft = $198/sqft Comp 3: $460,000 at 2,300 sqft = $200/sqft Comp average: $199/sqft Subject premium: -0.6% The subject is priced essentially at neighborhood norm. Negotiation room is limited (maybe $5–10K at most without distinguishing features). Decision likely turns on subjective fit rather than price.
Subject: $550,000 at 2,500 sqft = $220/sqft Comp 1: $420,000 at 2,100 sqft = $200/sqft Comp 2: $480,000 at 2,500 sqft = $192/sqft Comp 3: $495,000 at 2,600 sqft = $190/sqft Comp average: $194/sqft Subject premium: +13.4% Implied price at comp average: $194 × 2,500 = $485,000. Listing is $65,000 above implied. Strong negotiating position. Either subject has unique value not visible in square footage (renovations, lot premium) or it's overpriced. Offer at $490K-$510K range and ask the seller to justify the premium.
Subject: $360,000 at 2,000 sqft = $180/sqft Comp 1: $420,000 at 2,100 sqft = $200/sqft Comp 2: $430,000 at 2,200 sqft = $195/sqft Comp 3: $410,000 at 2,000 sqft = $205/sqft Comp average: $200/sqft Subject premium: -10% Implied price at comp average: $200 × 2,000 = $400,000. Listing is $40,000 below comp average. Worth investigating. Possibilities: needs major work, undesirable lot (corner, busy street, weird shape), foundation or structural issues, recent decline in HOA standing, or genuinely motivated seller. Order a thorough inspection before assuming this is a steal.
Use this calculator whenever you're evaluating a real estate transaction — making an offer, listing your own property, appealing a property tax assessment, or analyzing investment property comparables. It's the fastest sanity check for whether a price makes sense in context.
For buyers, it's the foundation of any offer. Listing prices reflect what the seller hopes to receive; the comp-adjusted price-per-square-foot reflects what the market has actually paid recently. Use the calculator to anchor your offer to the latter, not the former.
For sellers and listing agents, it's the basis of accurate pricing. Listing too far above the comp average creates extended days on market, price reductions, and ultimately lower final sale prices than well-priced listings receive. The calculator helps set a realistic listing price from day one.
Pair this with the cap-rate calculator (for rental investment analysis), the rental-property calculator (full ROI analysis), the home-value calculator (broader valuation), and the mortgage-payment calculator (affordability check at the comp-implied price).
Important limitations to keep in mind: price per square foot doesn't adjust for differences in: - Condition (recent renovation adds value not captured in sqft) - Lot size (a 2,000 sqft house on 1 acre vs. on 0.1 acre have very different values) - Location within the neighborhood (corner, busy street, school boundary, view) - Age and quality of construction - Layout efficiency (some 2,000 sqft homes feel larger and more livable than others) - Recent vs. older sales (use comps from the last 6 months in normal markets, last 3 months in fast-moving markets)
The right way to use the metric is as a screening tool, not a final answer. Properties that are dramatically above or below the comp average warrant investigation; properties roughly in line need other analysis (condition, fit, financing terms) to make the decision.
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Optional: for price per lot sq ft
Price per Sq Ft
$200
Avg Comp $/Sq Ft
$198
Est. Value from Comps
$395,122
Over/Under Comps
+$4,878
| Property | Price | $/Sq Ft |
|---|---|---|
| Subject Property | $400,000.00 | $200.00 |
| Comp 1 | $380,000.00 | $200.00 |
| Comp 2 | $420,000.00 | $200.00 |
| Comp 3 | $395,000.00 | $192.68 |