Gilbert, AZ Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- SF-15 lot coverage cap
- 35% (one- and two-story)
- SF-43/SF-35 lot coverage cap
- 30%
- SF-8/SF-6 lot coverage range
- Up to 45%
- Open-air bonus
- +5% for patios/porches/accessory structures
- Older-home bonus
- +10% for homes over 20 years old
- Relief beyond cap
- PAD process or Variance only
Summary
Gilbert's Land Development Code caps single-family lot coverage by district, 35% for both one-story and two-story homes in the mid-sized SF-15 district, then layers on two bonuses: 5% extra for open-air patios, porches, and accessory structures, and 10% extra for homes over 20 years old to encourage redevelopment.
Table 3.2.4.C.1 SF-15 Primary Dwelling Unit Development Regulations — Maximum Lot Coverage (%): One-Story 35 F; Two-Story 35 F. ... 3.2.5 Single Family Residential Development Standards - Additional Regulations ... F. Additional Lot Coverage 1. In the SF-43 through SF-6 districts 5% additional lot coverage in excess of the Zoning Code standard for the base zoning district is permitted for open air accessory structures, open air attached patios and open-air porches. See Terms. 2. Homes that have been constructed and occupied, for more than 20 years, and which are within the SF-43 through SF-6 zoning districts, are permitted an extra 10% lot coverage in excess of the Zoning Code standard for the base zoning district to promote redevelopment.
Full Breakdown
5. Lot coverage across all of Gilbert's single-family districts follows this same table structure, SF-43 and SF-35, the town's large-lot districts, cap coverage at 30%, while the smaller SF-8 and SF-6 subdivision districts allow a combined one-story/two-story range up to 45%, tighter for two-story massing. F, "Additional Lot Coverage," then grants two specific bonuses on top of whatever base percentage applies in SF-43 through SF-6: a flat 5% additional lot coverage "in excess of the Zoning Code standard for the base zoning district" for open-air accessory structures, open-air attached patios, and open-air porches, and a separate 10% bonus for any home "constructed and occupied, for more than 20 years" to promote redevelopment of older neighborhoods. 2). 1 note 7 states development regulations in the base tables may only be modified through PAD or Variance.
Violations & Fines
Exceeding a district's maximum lot coverage percentage, after accounting for any 5% open-air or 10% redevelopment bonus under LDC §3.2.5.F, is a Zoning Code violation subject to enforcement by the Town's Zoning Administrator (LDC §1.9), and construction that pushes combined building footprints over the cap can be required to be modified or removed before a certificate of occupancy issues.
Frequently Asked Questions
What is the maximum lot coverage allowed in Gilbert's SF-15 district?
Can I get extra lot coverage for a patio in Gilbert?
Does an older home get a lot coverage bonus in Gilbert?
What counts toward lot coverage in Gilbert?
Sources & Official References
Other rules in Gilbert
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Lot Coverage Limits in Nearby Cities
How other cities in Maricopa County handle lot coverage limits.