City of Philadelphia

https://
The https:// in the address bar means your information is encrypted and can not be accessed by anyone else
.gov
Only government entities in the U.S. can end in .gov

Translate

It looks like your device language is set to . Would you like to translate this page?

Interpreting historic certificates of occupancy

The Department of Licenses and Inspections (L&I) began issuing Certificates of Occupancy (COs) since 1969. This document explains when CO information exists and how to interpret the historic records.

Name Description Released Format
Interpreting historic records information sheet PDF This information sheet explains when CO information exists, how to interpret it, and what actions may be required when a CO cannot be located. June 9, 2026

Top