Building Setbacks & Zoning in Philadelphia, PA

Philadelphia maintains 178 local ordinances across all categories, and 3 of those deal specifically with building setbacks & zoning. Here is a breakdown of what the city actually requires, what is prohibited, and where Philadelphia falls on the strict-to-permissive spectrum compared to other cities.

Setback Rules

Minimum front, side, and rear yard depths are fixed per zoning district in the Zoning Code's dimensional tables, from 35 ft. front yards in RSD-1 down to 7-9 ft. rear yards in RSA-5/RSA-6.

Key details: Governing table: Table 14-701-1 through 14-701-4. RSD-1 front yard min.: 35 ft.. RSA-3 front yard min.: 8 ft.. RSA-6 rear yard min.: 7 ft.. Base fine: up to $300/day, § 1-109.

Building without the required setback is a Zoning Code violation; L&I issues a notice of violation and can revoke or deny the zoning permit if the deficiency isn't corrected within 30 days. General Code penalty under § 1-109 is a fine of up to $300 per offense, with each day a separate offense.

Structure Height Limits

Most Philadelphia rowhouse and detached-house zones cap building height at 38 feet, with lower limits in RSA-6 and RTA-2 districts.

Key details: RSD/RSA-1 to 5/RTA-1 cap: 38 ft.. RSA-6 default cap: 25 ft.. RTA-2 limit: 3 stories. RSA-6 parapet allowance: 8 in. above max height. Enforcing agency: Dept. of Licenses & Inspections.

Building above the district height cap without an approved variance is a zoning code violation enforceable by L&I; the department can issue a stop-work order or require removal of the noncompliant portion.

Lot Coverage Limits

Philadelphia's Zoning Code limits how much of a lot a building can occupy through the "Max. Occupied Area" standard in Table 14-701-1. Detached-house districts like RSA-1 and RSA-2 cap coverage at 30% and 40%, rowhouse districts like RSA-3 and RSA-4 allow 50%, and dense attached-house districts RSA-5 and RSA-6 permit 75% to 80%. The limit applies to accessory structures too.

Key details: Governing table: Table 14-701-1, § 14-701. RSA-1/RSA-2 (detached) limit: 30%-40% of lot. RSA-3/RSA-4 (rowhouse) limit: 50% of lot. RSA-5/RSA-6 (attached) limit: 75%-80% of lot. Shallow-lot exemption: Lots 45 ft deep or less, RSA-5/RSA-6.

A building footprint that exceeds the occupied-area percentage in Table 14-701-1 cannot receive a zoning permit from the Department of Licenses and Inspections as designed. The applicant must either shrink the footprint to fit the district's cap, qualify for the RSA-5/RSA-6 shallow-lot exemption in note [3], or pursue the special exception process under § 14-303(7), which requires a hearing and approval before L&I can issue the permit.

The Bottom Line

Philadelphia's building setbacks & zoning rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Philadelphia is broadly strict or permissive.

Keep in mind that Philadelphia can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.