Finance category

Mortgage, loan, investing, tax, and money calculators.

Price Per Square Foot Calculator

Compute the subject property's price per square foot and compare to up to three comparable sales. Use the comp-average PSF times subject square footage as an indicated market value.

Subject property

Sale price (or list price)

Square feet

Comparable sales

Comp 1 price

Comp 1 sf

Comp 2 price

Comp 2 sf

Comp 3 price

Comp 3 sf

Subject price / sf

$266

Comp average price / sf

$264

range: $263–$266

Indicated market value

$480,270

subject sf × avg comp psf

Delta vs current price

-$4,730

may be overpriced

How to use it

PSF is a fast valuation reasonability check. Always pair with adjustments for condition, location quality within the neighborhood, lot size, and major features (garage, view, ADU).

Smaller homes typically command higher PSF than larger homes because shared overhead spreads across less square footage. When comparing PSF, pick comps within roughly 20% of the subject's size.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Price Per Square Foot Calculator is built to give a quick, browser-based estimate for price per square foot. Compute the subject property's price per square foot and compare to up to three comparable sales. Use the comp-average PSF times subject square footage as an indicated market value. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the price per square foot result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this price per square foot estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter the subject property's sale price (or list price) and square footage.
Enter price and square footage for up to 3 recent comparable sales.
Read the subject PSF and the comp range.
Compare the indicated market value (avg comp PSF × subject sf) to the listed price.

Frequently Asked Questions

Is PSF a reliable valuation method?

It's one tool. PSF works as a sanity check but doesn't account for location quality within a neighborhood, condition, lot size, or features (garage, ADU, view). A formal appraisal makes adjustments line by line.

Why does PSF vary by home size?

Smaller homes have higher PSF because shared overhead (kitchen, bath, mechanicals, foundation) spreads across less square footage. Compare to comps within ~20% of subject size for cleaner comparison.

Should I include outdoor square footage?

Standard PSF uses livable interior square footage. Lots, decks, garages, and basements are usually valued separately or via condition/feature adjustments rather than rolled into PSF.

Do appraisers use PSF as their primary method?

No — they use the sales comparison approach with line-item adjustments, then back-check with PSF. PSF is the quickest gut-check but rarely the final answer.