Enter any U.S. address to see the property on satellite imagery. Trace the visible boundaries to get square footage and acreage. Free.
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Property size is the total area of a parcel, measured in square feet or acres, everything inside the boundary lines: the house footprint, driveway, yard, garden, all of it. It's distinct frominterior living area, which counts only the finished space inside the home. Listings show both numbers because they answer different questions: living area tells you about the house; property size tells you about the land.
When someone says a lot is "a quarter acre," they mean 10,890 sq ft of total property. The lawn is smaller than that once the house and hardscape are subtracted, by an amount that differs from lot to lot. If it's specifically the grass you're after, the measure my lot walkthrough covers measuring each surface separately.
1. Trace it at LotSite. Enter the address, see satellite imagery with a measuring grid, and trace the visible boundaries: fences, driveways, hedges. The area totals up as you paint. Fastest free option, and the only one that also breaks the property down by surface type.
2. County assessor records. The official recorded parcel size, published free on your county assessor's website. Most accurate public source, but every county portal is different, and finding the record can take a while.
3. Zillow or Redfin. Lot sizes on listing pages come from public data plus estimation. Convenient, but figures are approximate and often missing for off-market homes.
4. Property survey. The legally definitive answer, drawn by a licensed surveyor. It is the most accurate option, but it costs money if you don't already have one from closing, and survey costs vary by location and by lot. For the full comparison, see lot size by address or the quick find my lot size page.
When the numbers disagree, don't panic. A traced measurement, the county's recorded figure, and a listing's lot size routinely differ, and for legitimate reasons beyond tracing error. In many jurisdictions the recorded lot legally extends into road right-of-way you can't use; easements sit inside your line but restrict what you can do with the ground; and listing figures are often rounded to attractive fractions of an acre.
Match the source to the decision. For planning a fence, ordering mulch, or comparing yards between two listings, the traced visible-yard figure reflects what you'll actually use. Anything legal or financial, a sale contract, a tax appeal, a dispute, runs on the recorded figure, and ultimately on a licensed survey. Neither number is wrong; they answer different questions: what you own versus what you use.
Square feet and acres side by side. One acre is 43,560 square feet.
| Square Feet | Acres |
|---|---|
| 2,000–5,000 sq ft | 0.05–0.11 |
| 5,000–8,000 sq ft | 0.11–0.18 |
| 8,000–15,000 sq ft | 0.18–0.34 |
| 15,000–25,000 sq ft | 0.34–0.57 |
| 43,560+ sq ft | 1.0+ |
Lot sizes vary widely by region, by city and by the age of the neighborhood, and LotSite has no sourced figure for any neighborhood type. The one published reference used on this site is the U.S. Census Bureau's Characteristics of New Housing: the median lot of new single-family houses sold in 2025 was 8,307 sq ft nationally, from 5,969 in the West to 11,107 in the Northeast (published July 1, 2026). Those figures cover new houses only, not all homes, and not any particular lot.
For a specific address, the recorded size is on the county assessor's website. To measure what is on the ground, enter the address above and trace it, or run a lot size calculation from dimensions you already have.
Enter an address, trace the boundaries you see, and read the square footage and acreage of what you traced. Free, no signup.
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