Follow the default numbers.
With purchase price of $350,000, living area of 2,000 sq ft, the model gives price per square foot: $175.
The formula is price per square foot = price ÷ living area. Open the breakdown to trace expenses and assumptions. Change one input at a time to see how your decision changes. This example uses scenario inputs; it is not an offer, tax bill, appraisal or legal determination.
Use one living-area definition
Price per square foot divides price by the area entered. Above-grade area, finished basement area and gross building area can differ. If one listing includes a basement and another excludes it, their ratios are not comparable. The reverse modes multiply area by unit price or divide price by unit price. Zero area cannot support a ratio.
Compare context as well as the number
Lot value, location, age, renovation quality and fixed building costs can make two homes with the same ratio very different purchases. Smaller houses often have a different cost structure from larger homes. The comparison table accepts up to five properties and shows each unit price. It does not adjust condition or location; the ARV page adds explicit adjustment inputs.
A unit price is not an appraisal
Averaging listing prices per square foot does not establish a market value. Asking prices can differ from closed prices and concessions can affect the economics. Match the data basis and timing before using the average in an offer or project budget. For a rehab exit, use closed sales in the expected finished condition and test a supported range.
Keep your assumptions with the result
Save the calculation to your deal file to reuse compatible inputs in another tool. The file stays in this browser on this device. Download the CSV to open the complete inputs, results and schedule in Excel or Google Sheets. Use PDF to print the report or save it as a PDF. A share link includes entered financial figures in its URL, so use it only with people you intend to share those numbers with.