Surprise, AZ Building Setbacks & Zoning: Lot Coverage Limits (2026)

3 caps total lot coverage, the share of a lot's area that may be covered by buildings, in Surprise's R-1 zoning district, with the percentage falling as lot size increases: 45 percent for Category B lots (8,000 to 11,999 square feet), 40 percent for Category C, 30 percent for both Category D and Category E, and 25 percent for the largest Category F lots of 43,560 square feet or more. Footnote 5 to the table carves out an exception for RV garages: a Category B lot that includes an RV garage may cover up to 55 percent of the lot, ten points above the district's normal 45 percent cap for that category.

2, matching R-1's tightest (Category F) coverage percentage even though RR lots start at a full acre. Lot coverage works alongside the district's open space requirement: R-1 Category B lots must also provide 20 percent open space on a subdivision-wide basis under the same table's open space row, so the coverage and open space figures are calculated together during subdivision and site plan review rather than lot by lot, per note 2 to Table 106-2c. These standards, like the district's setback and height limits, were adopted by Ordinance No. 2024-03 and amended by Ordinance No. 2025-19.