Pennsylvania

Pennsylvania ADUAllowed checks.

Use a connected city page or enter an address. Official local sources remain final.

Quick answer

Pennsylvania ADUAllowed coverage starts with local official sources and connected city pages.

Official ADU and zoning sources 1 connected market

State source posture

Local official sources

ADU eligibility depends on city code, zoning, parcel constraints, utilities, and building safety review.

Philadelphia ADU screening starts with the official zoning checklist, Atlas zoning tab, and L&I permit path.

Cite this page

Use this page as a public web reference, not an official agency record. The linked official source remains the final authority.

ADUAllowed. "Pennsylvania ADUAllowed | Official Source Routes". https://www.aduallowed.com/states/pa/. Reviewed Jun 2026.