Interactive maps and information about City zoning regulations. Get a project review by the Philadelphia Art Commission Some projects require approval by the Philadelphia Art Commission. City building codes A summary of City building codes, and a link to the complete code. Interactive Map of Philadelphia A link to an interactive map of Philadelphia. Find a City-owned building How to find a City-owned property. Find location and zoning information Information about zoning in the City of Philadelphia. Get approval for work to a historic property How to get your building permit application approved by the Philadelphia Historical Commission for work to a historic property. Participate in a Zoning Board of Adjustment (ZBA) hearing How to participate in a Zoning Board of Adjustment hearing. Appeal a zoning decision to the Zoning Board of Adjustment (ZBA) If L&I refuses your Zoning/Use Registration application, you may appeal to the Zoning Board of Adjustment (ZBA).