How to Measure a Driveway — Square Footage Guide

For a straight rectangular driveway: Length × Width = Square Footage. A 60-foot by 12-foot driveway = 720 sq ft. For L-shaped or multi-section driveways, divide into rectangles, calculate each, and add them together — an L-shape is just two rectangles sharing a corner, so a 40 × 12 ft run plus a 20 × 20 ft pad is 480 + 400 = 880 sq ft. Don't forget the street apron: the flared section where the driveway meets the road typically adds 150–400 sq ft and is easy to leave out of a length-times-width estimate.

Measure the center-line length and multiply by average width. To find average width on a tapering driveway, measure it at three points — top, middle, and bottom — and use the mean; that keeps the error within a few percent for most shapes. For precision on genuinely irregular shapes, trace the actual outline on a satellite image with SurfaceMeasure — a traced polygon follows the real curve instead of approximating it as rectangles, which is where manual measurements of curved driveways usually go wrong.

Single-car driveways are typically 10–12 ft wide. Two-car driveways are 18–24 ft wide, and three-car layouts commonly run 28–36 ft across the widest section. If your driveway tapers or flares, calculate each section at its actual width and add them together rather than averaging across the whole run — a 20-ft flare averaged into a 12-ft run understates the flare and overstates the run, and the errors don't cancel on material orders.

10% is standard for concrete and asphalt. Use 10–15% for pavers — more if the pattern requires many cuts. It is always cheaper to order slightly more upfront than to reorder with a different batch.

Yes. SurfaceMeasure uses georeferenced satellite imagery so measurements correspond to real-world dimensions. Most residential driveways measure within 1–3% of a tape measurement — accurate enough for professional estimates, material orders, and quotes. In dollar terms, even a worst-case 3% miss on a 2,000 sq ft driveway priced at $0.15 per square foot is about $9 — smaller than the fuel cost of driving out to measure by hand. Contractors typically measure remotely first and save the site visit for jobs that actually book.

It depends on the scope of work. Measure both separately to give clients a clear line-item breakdown — a typical two-car garage pad adds roughly 400–500 sq ft, which is a meaningful line on a cleaning or sealing quote. For total material orders, only include what you are actually installing; for cleaning work, quoting the pad separately lets the client drop it without renegotiating the whole job.