Lot Coverage Limits: Mesa vs Phoenix
How do lot coverage limits rules compare between Mesa, AZ and Phoenix, AZ?
Mesa and Phoenix have similar restriction levels.
Mesa, AZ
Maricopa County
Mesa's Zoning Ordinance regulates lot coverage (the percentage of a lot that may be covered by buildings and structures) by zoning district. Single-family residential districts typically allow 40-50% lot coverage, with the remainder required for yards, setbacks, and open space. Multi-family and commercial districts allow higher coverage percentages. Covered patios, carports, and accessory structures count toward lot coverage calculations.
View full Mesa rules →Phoenix, AZ
Maricopa County
Phoenix Zoning Ordinance Section 701 sets lot coverage maximums by district. R1-6 allows 40%, R1-8 allows 35%, R1-10 allows 30%, and R-2 allows 45%. When 100% lot coverage is permitted (by right or sustainability bonus), interior setbacks may be reduced or eliminated with Design Review Committee approval.
View full Phoenix rules →Key Facts Comparison
| Fact | Mesa | Phoenix |
|---|---|---|
| Code Section | Mesa Zoning Ordinance Title 11 | - |
| Residential Coverage | Typically 40-50% maximum | - |
| Multi-Family | Higher coverage permitted | - |
| Included Structures | Buildings, carports, covered patios | - |
| Open Space | Remainder of lot must be open/landscaped | - |
| Zoning Section | - | Phoenix Zoning Ordinance §701 |
| R1-6 | - | 40% max lot coverage |
| R1-8 | - | 35% max lot coverage |
| R1-10 | - | 30% max lot coverage |
| R-2 (Two-Family) | - | 45% max lot coverage |
Highlighted rows indicate differences between cities.
Mesa FAQ
How much of my lot can I build on in Mesa?
In single-family residential zones, lot coverage is typically limited to 40-50% of the total lot area. This includes the house, garage, carports, covered patios, and accessory structures. The remaining area must be open space or landscaping.
Does a covered patio count toward lot coverage?
Yes. Covered patios, carports, sheds, and any roofed structure typically count toward lot coverage calculations under Mesa's zoning ordinance. Check with Development Services before building to ensure you will remain within your district's coverage limit.
Phoenix FAQ
What percentage of my lot can I build on?
It depends on your zoning district. Common limits: R1-6 (40%), R1-8 (35%), R1-10 (30%), R-2 (45%). Coverage includes all buildings and structures. Check your specific zoning district at phoenix.municipal.codes.
Can I exceed the lot coverage maximum?
In some districts, 100% lot coverage may be permitted by right or earned through sustainability bonus points. In those cases, interior setbacks may be reduced or eliminated with Design Review Committee approval.
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