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Cost per square foot comparison
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Compare homes, lots, or builder bids side by side by cost per square foot to see which is the better value.
- Average across options$183.22 per sq ft
- HighestOption 2, $202.56
| Option | Price | Sq ft | $/sq ft | vs. best |
|---|---|---|---|---|
| 3 | $520,000 | 3,100 | $167.74 | — |
| 1 | $450,000 | 2,400 | $187.50 | +12% |
| 2 | $395,000 | 1,950 | $202.56 | +21% |
How this calculator works
Cost per square foot is the total price divided by the size, which puts homes or bids of different sizes on equal footing. When comparing, measure the same way for every option: heated (conditioned) living area is the usual standard, and garages, porches, and unfinished basements should be left out or listed separately. A lower cost per square foot is not always a better deal, since location, lot size, finishes, and what a bid includes can matter more, so use it as a starting point for a closer look.
A worked example
The example compares three options. Option 1 is $450,000 for 2,400 square feet, which is $187.50 per square foot. Option 2 is $395,000 for 1,950 square feet, or $202.56. Option 3 is $520,000 for 3,100 square feet, or $167.74.
The most expensive house has the lowest cost per square foot, and the cheapest house has the highest, 21% above the best. Option 1 sits in between at 12% above. The average across all three, weighted by size, is $183.22.
How to read your results
The table sorts the options from lowest to highest cost per square foot and shows how far each one is above the best. That ordering is a starting point for questions, not a ranking of which to choose. A higher figure may reflect a better location, a larger lot, newer systems, or better finishes.
For builder bids, the comparison only means something when every bid covers the same plans and the same list of what is included. Line the bids up item by item first, then compare the cost per square foot.
Common mistakes to avoid
- Mixing measurements. One listing may quote heated living area and another may include the garage or a finished basement. Use the same definition for every option.
- Expecting small homes to match large ones. Every house needs a kitchen, bathrooms, and mechanical systems. Spreading those costs over fewer square feet raises the figure for smaller homes.
- Ignoring the land. For existing homes, the price includes the lot. Two identical houses on different lots will show different costs per square foot.
- Comparing bids with different allowances. A low bid with small allowances for cabinets, flooring, and lighting can end up costing more than a higher bid with realistic ones.
Read the guide: How to compare builder bids
Common questions
How do you calculate cost per square foot?
Divide the total price by the square footage. For a fair comparison, use the same measurement for every option, usually heated living area, and leave out garages and porches.
Is the lowest cost per square foot the best deal?
Not always. Location, lot, finishes, and what a builder bid includes can matter more. Use it as a starting point for a closer comparison.
What should be counted as square footage?
Heated and finished living space is the usual standard. Garages, porches, and unfinished basements are normally left out or listed separately.
Why do smaller homes cost more per square foot?
The most expensive rooms, kitchens and bathrooms, and fixed items like the heating and cooling system do not shrink in proportion to the house. Their cost is divided by fewer square feet.
What is usually left out of a builder's price per square foot?
Often the lot, site work, utility connections, permits and impact fees, landscaping, and sometimes appliances. Ask each builder for a written list of what is and is not included.
Can I compare lots this way?
Yes. Enter the price and the lot size in square feet, or use acres for every option. The comparison works for any price and any consistent unit of size.
Disclaimer: These are ballpark estimates only. Real costs depend on your location, site conditions, materials, and the market. Get written quotes from licensed contractors and your lender before you set a budget.
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