Sahuarita, AZ Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- R-3 max lot coverage (post-2023 plats)
- 60%
- R-3 max lot coverage (pre-2023 plats)
- 50%
- R-4 max lot coverage
- 70%
- R-5 max lot coverage
- 75%
- RH, GR-1, SR, R-1, R-2
- No figure listed in table
Summary
Sahuarita caps maximum lot coverage at 60 percent in the R-3 zone, 70 percent in R-4, and 75 percent in R-5 under Table 18.12-2 of Town Code Section 18.12.040, while the RH, GR-1, SR, R-1, and R-2 zones carry no coverage figure in that table. The 60 percent R-3 figure applies only to lots platted after July 1, 2023.
Table 18.12-2 Development Standards – Main Buildings – Single-Family Attached and Detached RH GR-1 SR R-1 R-2 R-3 R-4 R-5 MH ... Maximum Lot Coverage – – – – – 60%*1 70% 75% – ... 1 Applies to subdivisions platted after July 1, 2023. For subdivisions platted prior to July 1, 2023, the maximum lot coverage is 50 percent.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4745395; v0 updated 2025-12-08; through 12-08-2025).
Full Breakdown
12-2's maximum lot coverage row lists a figure for only three of the nine residential zones: 60 percent for R-3, 70 percent for R-4, and 75 percent for R-5, with the remaining RH, GR-1, SR, R-1, and R-2 zones left blank in that table. A footnote to the R-3 figure narrows it further: the 60 percent maximum applies only to subdivisions platted after July 1, 2023, while any subdivision platted before that date is held to a 50 percent maximum lot coverage instead. 12-3 as the multifamily lot coverage standard for main buildings in those two zones, so a multifamily project in R-4 or R-5 follows the identical percentage as a single-family project.
Lot coverage is measured against the site's total area and governs how much of the parcel the main building's footprint can occupy, separate from the town's setback lines, which control how close that footprint can come to each property boundary.
Violations & Fines
A main building that exceeds the applicable lot coverage percentage is a zoning violation under Town Code Section 18.95.030, enforced through zoning administrator inspection, written notice, and citation, with building safety authorized to suspend construction that does not conform to approved plans. Section 18.95.040 sets the maximum penalty at $750 per offense for an individual or $10,000 for a corporation, each day a separate offense before the town magistrate.
Frequently Asked Questions
What is the maximum lot coverage in Sahuarita's R-3 zone?
Do R-4 and R-5 have the same lot coverage limits for houses and apartments?
Is there a lot coverage cap in the RH or GR-1 zones?
Sources & Official References
Other rules in Sahuarita
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Lot Coverage Limits in Nearby Cities
How other cities in Pima County handle lot coverage limits.