DISCLAIMER: General Reference Only
This information is for general reference only and may not reflect the most current requirements. Permit regulations change frequently. Always verify current requirements with the Phoenix, AZ building department before starting any project.
This website does not provide legal, architectural, or engineering advice. Using this information does not constitute a permit application or approval.
🗓️ Data last verified: — Verify current requirements at phoenix.gov
Do I Need a Permit for Room Addition in Phoenix?
Phoenix, AZ · Official data from city building dept · Last updated: 2026-04-17
All room additions in Phoenix require a building permit. The permit process ensures structural integrity, proper electrical/plumbing connections, and compliance with setback and zoning requirements.
⚠️ Permit IS Required When…
- •Any addition of living space to existing home
- •Converting garage to living space
- •Adding an accessory dwelling unit (ADU)
- •Enclosing a porch or patio to create conditioned space
✅ No Permit Needed When…
- •Adding non-structural storage shelves inside existing space
- •Interior cosmetic remodeling (no structural changes)
💡 Additional Information
Room additions require architectural drawings/plans. Fees are based on project valuation — a 400 sq ft addition might cost $600–$1,500 in permit fees. Zoning setbacks must be met (typically 20 ft front, 7 ft side, 20 ft rear).
📋 Official Source
This information is sourced directly from the PhoenixPlanning & Development Department.
https://www.phoenix.gov/administration/departments/pdd/residential-building/resident-plan-reviews/additions-remodels.html🏛️ Verify Directly with Phoenix
Always confirm current permit requirements with the official Phoenix, AZ building department before starting work.