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

Section 10-40.30.030, Residential Zones, fixes the share of a lot that buildings may cover under the row labeled Coverage (max.) in Table 10-40.30.030.C. The two large-lot zones built around the City's rural mountain character carry the tightest limits: Rural Residential (RR) tops out at 20 percent lot coverage and Estate Residential (ER) at 17 percent, both zones the Code describes as intended for large-lot single-family and limited agricultural use with minimal municipal services. The Single-Family Residential (R1) and Single-Family Residential Neighborhood (R1N) zones share a 35 percent maximum. Medium Density Residential (MR) rises to 40 percent, High Density Residential (HR) to 50 percent, and the Manufactured Housing (MH) zone sits at 43 percent, reflecting the denser development each zone is designed to accommodate.

Coverage is measured against the same Table 10-40.30.030.C that fixes setbacks and height for each zone, and Section 10-40.30.020 directs that these standards apply in combination with Chapter 10-50, Supplemental to Zones, and Division 10-40.60, Specific to Uses, with this division controlling if the standards conflict. A recorded final plat for a Planned Residential Development can set an alternate lot coverage figure with City Council approval, but absent that approval the zone's table figure governs every lot.