Zoning Report
Mesa, AZ Zoning
Mesa’s zoning system is a large, actively maintained municipal code organized around base zoning districts, overlay districts, and citywide development standards. The city’s public materials emphasize planned growth, design quality, neighborhood compatibility, and increasingly objective administrative review standards. Recent 2026 amendments indicate Mesa is modernizing review procedures and district regulations, but the source set provided here does not include the full district-by-district code text needed for a fully exhaustive district inventory.
Last researched May 2026
Zoning Districts in Mesa, AZ
AG Agricultural
Agricultural zoning district where single-residence uses are allowed and where ADUs are also allowed on lots with a single residence.
Allowed uses: single residence, accessory dwelling unit
RS Single Residence
Single-family residential district for detached residential living. City checklists show this district includes house design, parking, driveway, frontage, and front-yard paving controls.
Allowed uses: single residence, accessory dwelling unit
RSL Small Lot Single Residence
Small-lot single-residence district. Mesa’s materials indicate it functions as a single-residence district and allows ADUs where a single residence is allowed.
Allowed uses: single residence, accessory dwelling unit
RM Multiple Residence
Multiple-residence district allowing more than one residential unit type and identified by the city as one of the districts where ADUs may also be permitted on lots with a single residence.
Allowed uses: multiple residence, single residence on qualifying lots, accessory dwelling unit
DR Downtown Residence
Downtown residential district identified by the city as allowing ADUs where a single residence is allowed.
Allowed uses: single residence on qualifying lots, accessory dwelling unit
MX Mixed Use
Mixed-use district identified in the ADU guidance as a district where ADUs may be allowed on lots with a single residence. Mesa’s code update materials indicate commercial and mixed-use district regulations were reworked in 2026.
Allowed uses: mixed-use development, single residence on qualifying lots, accessory dwelling unit
NC Neighborhood Commercial
Commercial district intended for neighborhood-serving commercial activity and identified by the city as one of the districts where ADUs may be permitted on lots with a single residence.
Allowed uses: commercial uses, single residence on qualifying lots, accessory dwelling unit
LC Limited Commercial
Commercial district identified in city ADU guidance as allowing ADUs on lots with a single residence.
Allowed uses: commercial uses, single residence on qualifying lots, accessory dwelling unit
GC General Commercial
General commercial district identified in city ADU guidance as allowing ADUs on lots with a single residence.
Allowed uses: commercial uses, single residence on qualifying lots, accessory dwelling unit
Recent Zoning Changes
Mesa adopted major zoning text amendments in early 2026. The city states that adopted amendments created more objective administrative review standards, revised site plan and design review modification criteria, updated expiration and extension rules, and removed obsolete zoning character designators. The codified code was updated through Ordinance No. 5997 on January 26, 2026, while Ordinance No. 5996 adopted March 9, 2026 was listed as adopted but not yet fully codified in the code supplement shown.
Setbacks, Lot Size & Height Limits in Mesa, AZ
The provided sources contain only partial dimensional information, mainly for ADUs and single-family checklist items rather than a complete district standards table. Mesa also has general citywide rules on building encroachments into setbacks and some garage, frontage, and driveway standards for single-family development.
| District | Standard | Requirement |
|---|---|---|
| All districts | building projections into required yard | not more than 3 feet — Awnings, eaves, overhangs, light shelves and basement window wells may encroach not more than 3 feet into any required yard, but shall not be closer than 2 feet to any property line. |
| All districts | minimum distance of encroachment from property line | 2 feet — Applies to specified projections into setbacks. |
| ADU on qualifying lots | maximum ADU size | 1,000 square feet or 75% of the habitable floor area of the primary dwelling unit, whichever is less — Applies to ADUs citywide where allowed. |
| ADU on qualifying lots | minimum side setback | five (5) feet — Front and street side setbacks must comply with the underlying zoning district. |
| ADU on qualifying lots | minimum rear setback | five (5) feet — Front and street side setbacks must comply with the underlying zoning district. |
| RS single-family checklist | detached structure separation | 6 feet — Required to be considered a detached structure. |
| RS single-family checklist | front porch minimum depth | six (6) feet — For one compliant primary-residence entryway option. |
| RS single-family checklist | front porch minimum length | eight (8) feet — For one compliant primary-residence entryway option. |
| RS single-family checklist | alternative entry feature minimum size | at least four (4) by four (4) feet — Applies to a portico, awning, recess, or stoop option. |
| RS single-family checklist | maximum garage door width as share of front elevation | 50 percent (50%) — Where garage doors face the front property line. |
| RS single-family checklist | minimum forward-facing garage setback behind primary wall | at least three (3) feet — And never less than the required garage setback. |
| RS single-family checklist | maximum front yard paved area coverage | 50 percent (50%) of the area of the front yard — Combined paved areas limit. |
| Residential enclosed garage | single car garage minimum inside dimensions | at least 10 feet wide and 22 feet long — From checklist citing MZO 11-32-4F. |
| Residential enclosed garage | double car garage minimum inside dimensions | at least 20 feet wide and 22 feet long — From checklist citing MZO 11-32-4F. |
| Residential enclosed garage | tandem garage minimum inside dimensions | at least 10 feet wide and 44 feet long — From checklist citing MZO 11-32-4F. |
| Residential carport | single-car carport minimum size | at least 10 feet wide by 20 feet long — From checklist citing MZO 11-32-4E. |
| Residential carport | double carport minimum size | at least 18 feet wide by 20 feet long — From checklist citing MZO 11-32-4E. |
| Lots less than 75 feet wide | maximum driveway width for required parking | up to 19 feet wide — One maximum driveway permitted for required parking. |
| Lots less than 75 feet wide | additional driveway width | up to ten (10) feet wide — Permitted if it leads to an interior side yard at least 12 feet wide. |
| Lots greater than or equal to 75 feet wide | maximum driveway width for required parking | up to 29 feet wide — Alternative to one 19-foot driveway plus one additional ten-foot driveway. |
| Lots with additional side-yard driveway | minimum interior side yard width | at least 12 feet wide — Applies where an additional driveway is used. |
ADU, Rental & Special Use Rules in Mesa, AZ
ADU
Mesa allows ADUs on any lot where a single residence is allowed, including AG, RS, RSL, RM, DR, MX, NC, LC, and GC.
- Any property with an existing single residence is permitted to have one attached and one detached ADU
- An additional detached ADU is permitted on lots that are over an acre in size if at least one ADU on the property is a restricted-affordable dwelling unit
- Maximum size is 1,000 square feet or 75% of the habitable floor area of the primary dwelling unit, whichever is less
- ADU must be set back at least five (5) feet from side and rear property lines
- Front and street side setbacks must comply with the underlying zoning district
Overlay Districts in Mesa, AZ
Historic District Overlay
A zoning overlay intended to protect and preserve neighborhoods with architecturally and historically significant structures. It does not change underlying zoning but adds another layer of standards and requirements.
AF Airfield Overlay District
Overlay referenced in the zoning ordinance height section. Within this overlay there are no standard exceptions to specified height limits unless specially authorized.
Parking Requirements in Mesa, AZ
- Single residenceminimum of 2 covered parking spaces per unit
- Accessory dwelling unitNo additional parking is required for an ADU
- Lots less than 75 feet wideA maximum of one (1) driveway up to 19 feet wide is permitted for required parking
- Lots greater than or equal to 75 feet wideA maximum of one (1) driveway up to 29 feet wide is permitted for required parking
Mesa, AZ Zoning FAQ
Are ADUs allowed in Mesa, AZ?
Mesa allows ADUs on any lot where a single residence is allowed, including AG, RS, RSL, RM, DR, MX, NC, LC, and GC.
What are the setback requirements in Mesa, AZ?
Setbacks vary by district. Examples — All districts: not more than 3 feet; ADU on qualifying lots: five (5) feet; ADU on qualifying lots: five (5) feet; RS single-family checklist: at least three (3) feet. Always confirm the exact yard requirements for your district with Mesa, AZ.
What are the parking requirements in Mesa, AZ?
Parking minimums vary by use — Single residence: minimum of 2 covered parking spaces per unit; Accessory dwelling unit: No additional parking is required for an ADU; Lots less than 75 feet wide: A maximum of one (1) driveway up to 19 feet wide is permitted for required parking; Lots greater than or equal to 75 feet wide: A maximum of one (1) driveway up to 29 feet wide is permitted for required parking.
What zoning districts are in Mesa, AZ?
Mesa, AZ includes districts such as AG Agricultural, RS Single Residence, RSL Small Lot Single Residence, RM Multiple Residence, DR Downtown Residence, MX Mixed Use, NC Neighborhood Commercial, LC Limited Commercial.
Are there flood zones or overlay districts in Mesa, AZ?
The provided source set does not include Mesa’s full environmental overlay or hazard regulations, but it does identify at least one formal overlay-based environmental or locational constraint: the Airfield Overlay District height restrictions.
Have there been recent zoning changes in Mesa, AZ?
Mesa adopted major zoning text amendments in early 2026. The city states that adopted amendments created more objective administrative review standards, revised site plan and design review modification criteria, updated expiration and extension rules, and removed obsolete zoning character designators.
Common questions about Mesa, AZ zoning
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- ARTICLE 4 - DEVELOPMENT REGULATIONS | Code of Ordinances | Mesa, AZ | Municode Library — Provided general site development standards excerpt, setback encroachment rule, and airfield overlay height exception reference.
- Development Codes, Ordinances, Regulations & Standards - City of Mesa — Provided overview of Mesa development regulations and detailed summary of newly adopted 2026 text amendments.
- https://mesa.legistar.com/DepartmentDetail.aspx?ID=10392&GUID=D853782F-E35D-4CC8-9D87-A99B126243DE — Confirmed existence of Planning and Zoning Board public hearing calendar, though no readable specific actions were extracted.
- Special Use Permit Process - City of Mesa — Provided special use permit purpose, required pre-submittal process, hearing requirement, and filing workflow.
- Historic District Overlay Process - City of Mesa — Provided description and purpose of Mesa’s Historic District Overlay and its application process.
- Variance Process - City of Mesa — Provided variance purpose, findings framework, pre-application requirement, and public hearing process.
- Mesa, AZ Flood Map and Climate Risk Report | First Street — Supplemental non-municipal context on parcel-level flood risk; used cautiously and not as primary zoning authority.
- Accessory Dwelling Units (ADUs) - City of Mesa — Primary source for ADU district applicability, size, setbacks, height, parking, and unit-count rules.
- Code of Ordinances | Mesa, AZ | Municode Library — Confirmed code update date, codification through Ordinance No. 5997, and adopted-but-not-yet-codified status of Ordinance No. 5996.
- Planning & Zoning Board - City of Mesa — Provided board responsibilities, meeting schedule, public participation details, and board composition.
- [PDF] zoning requirements for single family — Provided single-family parking, garage, driveway, frontage, entryway, coverage, and related dimensional checklist standards.
- Building Permit & Plan Review - City of Mesa — Confirmed adopted building code family and effective date for plan review and permit compliance.
This summary is AI-generated from public municipal sources and is not legal, engineering, or land-use advice. Always verify zoning with Mesa, AZ officials before making decisions.