Lot Coverage Limits: Green Valley vs Sahuarita
How do lot coverage limits rules compare between Green Valley, AZ and Sahuarita, AZ?
Green Valley and Sahuarita have similar restriction levels.
Green Valley, AZ
Pima County
Green Valley is unincorporated Pima County. Lot coverage is set by the Pima County Zoning Code (Title 18, Chapter 18.09 — General Residential and Rural Zoning Provisions). Each residential zone (CR-1, CR-2, CR-3, CR-4, CR-5, GR-1) has a specific maximum lot coverage; CR-1 (the most common Green Valley zone) typically allows around 40-50% lot coverage.
View full Green Valley rules →Sahuarita, AZ
Pima County
Sahuarita regulates the percentage of a lot that may be covered by structures and impervious surfaces through its zoning code Chapter 18.12, with maximum lot coverage varying by zone classification to reflect differences in lot sizes and intended development density across the Town. Suburban residential zones such as SR and MR typically allow 40 to 50 percent building coverage including all roofed structures, while rural zones like GR-1 and CR have lower coverage limits in the 25 to 35 percent range reflecting their larger lot sizes and open space character. The Town also regulates impervious surface coverage through grading and drainage requirements under Chapter 18.73 and the riparian habitat protection standards in Chapter 18.65, which may further restrict overall site development beyond the building coverage calculation.
View full Sahuarita rules →Key Facts Comparison
| Fact | Green Valley | Sahuarita |
|---|---|---|
| Jurisdiction | Pima County (unincorporated) | - |
| Code Reference | Title 18 Ch. 18.09 | Ch. 18.12, Ch. 18.85 |
| Typical CR-1 Coverage | 40-50% max | - |
| Variance Body | Pima County Board of Adjustment | - |
| Suburban Residential | - | 40-50% typical maximum |
| Rural Zones | - | 25-35% typical maximum |
| Includes | - | All roofed structures |
Highlighted rows indicate differences between cities.
Green Valley FAQ
What is the maximum lot coverage in Green Valley, AZ?
Green Valley follows Pima County's CR-1 / CR-2 zoning under Title 18 Chapter 18.09, typically allowing 40-50% lot coverage. Check your parcel's exact zone via PimaMaps GIS and consult Pima County Development Services for the precise number.
Do HOAs add lot coverage rules in Green Valley?
Yes. Many Green Valley HOAs (Green Valley Recreation, Quail Creek, etc.) impose CC&R limits stricter than Pima County's. Always check HOA architectural-review rules before building.
Sahuarita FAQ
Do pools and patios count toward lot coverage in Sahuarita?
Covered patios and roofed structures count toward building coverage. Open at-grade improvements like uncovered patios, swimming pools, and driveways generally do not count toward building lot coverage, though they may factor into impervious surface calculations for stormwater drainage purposes under Chapter 18.73.
What if my lot is already at maximum coverage and I want to add a structure?
You would need to apply for a lot development modification under Chapter 18.85, demonstrating that the lot shape, topography, or other unique physical conditions create a hardship. Alternatively, you could remove an existing roofed structure to free up coverage allowance for the new construction.
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