Price Per Square Foot Calculator Formula
Understand the math behind the price per square foot calculator. Each variable explained with a worked example.
Formulas Used
Price Per Square Foot
price_per_sqft = property_price / square_footagePrice Per 100 Sq Ft
price_per_100sqft = (property_price / square_footage) * 100Variables
| Variable | Description | Default |
|---|---|---|
property_price | Property Price(USD) | 350000 |
square_footage | Total Square Footage(sq ft) | 1800 |
How It Works
Calculating Price Per Square Foot
Price per square foot normalizes property values so you can make fair comparisons between homes of different sizes.
Formula
Price Per Sq Ft = Property Price / Total Square Footage
When to Use
Worked Example
A home is listed at $350,000 and has 1,800 square feet of living space.
- 01Property price: $350,000
- 02Square footage: 1,800 sq ft
- 03Price per sq ft = $350,000 / 1,800 = $194.44 per sq ft
- 04Price per 100 sq ft = $194.44 x 100 = $19,444
When to Use This Formula
- Comparing home values in the same neighborhood where houses differ in size, to determine which is the better deal on a per-area basis.
- Evaluating commercial lease rates by converting total rent into a price-per-square-foot figure that can be compared across different office or retail spaces.
- Estimating construction costs for a new build or renovation by multiplying the local average cost per square foot by the planned area.
- Appraising a property by using the price per square foot of recent comparable sales and applying it to the subject property's size.
- Budgeting for flooring, painting, or other area-based home improvement projects where materials and labor are priced per square foot.
Common Mistakes to Avoid
- Comparing price per square foot across properties with different quality levels — a luxury finish at $300/sqft and a basic finish at $150/sqft are not comparable even if the metric is the same, because the cost reflects quality, not just size.
- Using total lot area instead of the building's livable square footage — the formula should use interior living space (or rentable area for commercial), not the entire parcel including yard, garage, or common areas.
- Ignoring that smaller homes and units almost always have a higher price per square foot than larger ones — kitchens and bathrooms cost more per square foot than bedrooms, and small units have a higher ratio of expensive rooms to cheap rooms.
- Assuming price per square foot is uniform across all areas of a city — location, school district, views, and neighborhood desirability cause dramatic variation even within a few blocks.
Frequently Asked Questions
What is a normal price per square foot?
It varies enormously by location. In expensive urban markets it can exceed $1,000/sq ft, while rural areas might be $75-$150/sq ft. Always compare within the same market and property type.
Does price per square foot include the lot?
Typically the total purchase price includes land value. If you want to isolate building value, subtract estimated land value before dividing by square footage.
Should I use livable square footage or total?
Use livable (heated/cooled) square footage for the most meaningful comparison. Garages, unfinished basements, and porches are usually excluded from standard measurements.
Ready to run the numbers?
Open Price Per Square Foot Calculator