City · Pennsylvania
ADU rules in Philadelphia
3 sources
These are the primary sources for accessory dwelling unit regulations in Philadelphia: the city's own zoning code, planning department pages, and permit guides. Start here before talking to anyone: the rules below are what your permit reviewer will apply.
ADU regulations
- phila.govOfficial sourceVerified July 2026PZ 004 INF Accessory-Dwelling-Unit-Checklist-rev-3.8.2022 (PDF)https://www.phila.gov/media/20220308130807/PZ_004_INF_Accessory-Dwelling-Unit-Checklist-rev-3.8.2022.pdf
- phila.govOfficial sourceVerified July 2026https://www.phila.gov/services/permits-violations-licenses/apply-for-a-permit/zoning-permits/get-a-zoning-permit-for-new-construction-or-additions/
- codelibrary.amlegal.comOfficial sourceVerified July 2026https://codelibrary.amlegal.com/codes/philadelphia/latest/philadelphia_pa/0-0-0-292755
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