Free tool · Zoning
Lot coverage calculator
Enter the lot area and each building’s footprint. See the coverage and how much your zoning still allows.
Your site
sq ft
%
From your zoning code, to see how much more you can build.
Free tool · Zoning
Enter the lot area and each building’s footprint. See the coverage and how much your zoning still allows.
Draw your lot on the real map and push up the massing in Toras. FAR, lot coverage and height update as you shape it.
Open your site in TorasAdd up the footprint of every building and divide it by the area of the lot.
A 1,500 sq ft house and a 400 sq ft garage on a 6,000 sq ft lot: 1,900 ÷ 6,000 = 31.7%.
A limit of 40% on a 6,000 sq ft lot allows 2,400 sq ft of footprint.
Counts every floor. Two floors of 1,000 sq ft on a 2,000 sq ft lot is a FAR of 1.0, the same as one floor covering the whole lot.
Counts only the footprint. The same two-storey building covers 50% of the lot; adding floors never changes it.
Usually every roofed building on the lot: the house, a garage, sheds. Decks, porches, eaves and pools are treated differently from one zoning code to the next, so check yours.
No. Impervious coverage also counts driveways, patios and paths, anything water can’t soak through. Some codes limit both.
No. Coverage is the footprint on the ground. Upper floors count toward floor area ratio instead, unless they overhang beyond the floor below.