Setbacks & Height Limits in Phoenix

This guide explains the basic setback and height rules that apply to residential construction in Phoenix. The exact numbers depend on your zoning district, overlay zones, and lot geometry, so always confirm with the City of Phoenix Planning and Development Department before finalizing plans.

What Are Setbacks?

A setback is the minimum required distance between a building and a lot line. Setbacks are measured from the property line to the nearest point of the building (typically the wall, but eaves, chimneys, and bay windows have their own projection rules).

The Phoenix Zoning Ordinance specifies front, side, and rear setbacks separately for each zoning district. Corner lots have two "front" setbacks (one per street frontage) plus an interior side and a rear.

Typical Phoenix R1-6 Setbacks

The most common single-family district in Phoenix is R1-6 (Single-Family Residence, 6,000 sq ft minimum lot). Standard requirements are approximately:

Larger-lot zones — R1-8 (8,000 sq ft), R1-10 (10,000 sq ft), R1-14, and R1-18 — generally apply larger setbacks proportional to the lot. The low-density multi-family R-2 district uses its own schedule that allows duplexes and small multi-unit buildings.

These are typical values — your specific lot and zone may have different requirements. Always check the current Phoenix Zoning Ordinance.

Height Limits

Maximum building height in Phoenix single-family R1 districts is typically 30 ft, measured from grade to the highest point of the roof (or to a specified reference plane). Multi-family districts such as R-2, R-3, R-4, and R-5 allow greater heights, and commercial and downtown districts allow higher still.

Height rules get more complicated in:

• Hillside areas — additional limits on massing and grading
• Airport and flight-path overlays — Sky Harbor and other airports impose height surfaces
• Historic districts — context-based caps and design review
• Transit-oriented and walkable urban zones — generally allow more height in exchange for design standards

Lot Coverage

Beyond setbacks and height, lot coverage — the percentage of the lot footprint covered by buildings — is a key constraint in Phoenix R1 districts. Pools, uncovered patios, and driveways are typically excluded from the calculation, but the precise definition is set in the ordinance. Verify the maximum coverage allowed in your specific district before designing.

Common Exceptions and Encroachments

The Phoenix Zoning Ordinance allows certain features to project into required setbacks. Typical allowances include:

• Eaves and gutters (limited projection)
• Chimneys (limited projection)
• Bay windows
• Uncovered porches, stoops, and steps
• Air conditioning condensers (subject to noise rules)

Fences, walls, accessory structures, and pool equipment have their own rules — check the accessory structures section of the ordinance.

State ADU Note

Arizona does not have a statewide ADU preemption law that overrides local setback and height rules. Phoenix's local ADU ordinance governs accessory dwelling units in the city, and it allows reduced rear and side setbacks for ADUs (typically 5 ft rear and 3 ft side). See the ADU rules page for details.

How to Look Up Your Specific Requirements

1. Find your zoning district — use the Phoenix online zoning map via the Planning and Development Department site
2. Read the district regulations — the Phoenix Zoning Ordinance (Chapter 6 of the City Code, hosted on Municode) lists setbacks, height, and coverage by district
3. Check for overlays — historic, hillside, airport, and transit overlays can modify the base rules
4. Ask planning staff — the Planning and Development Department offers zoning information by phone at (602) 262-7811 and at the public counter

Variances

If your project cannot meet the strict letter of the zoning code, you may apply for a variance through the Phoenix Board of Adjustment — a formal request to deviate from the rules based on a hardship specific to your lot. Variances are discretionary and require public notice. See the Variance Application Guide for the general process.

Official Sources

See the sources linked in the frontmatter for the Phoenix Zoning Ordinance (Municode) and the Planning and Development Department. This guide is informational and is not a substitute for direct confirmation from planning staff. Setback, height, and coverage standards are updated periodically — always verify current numbers before relying on them for design or permitting.