PlainPermit

Do I need a permit for a retaining wall in Philadelphia, PA?

Short answer: It depends on the details for a retaining wall in Philadelphia, PA (for example: Over 2 ft: permit).

Last verified: · Confidence: high · Status: Verified from official source

Not legal advice. Always confirm with your local building department. Rules change, and your parcel's zoning, HOA, historic district, floodplain or utility work can change the answer. We show the official source and the date we last checked it so you can verify for yourself.
Depends on your project Confidence: high

Retaining walls up to 2 ft high need no permit. Taller walls need one, and walls over 4 ft need plans.

What changes the answer

Cost

Fee not extracted; see L&I fees. Unverified, confirm locally

Fee source: https://www.phila.gov/services/permits-violations-licenses/apply-for-a-permit/building-and-repair-permits/get-permits-without-plans-ez-permits/

Where to apply

Philadelphia Department of Licenses and Inspections (eCLIPSE online permits)

Permitting authority: City of Philadelphia Department of Licenses and Inspections (L&I). Applies in the City and County of Philadelphia. Properties on the Philadelphia Register of Historic Places may need Historical Commission review. Zoning permits are separate from building permits. See also: how to apply for a building permit.

Official sources

“Retaining walls or masonry fence walls two feet high”

Source: https://www.phila.gov/media/20260602151416/StartRight-FINAL-6.2026.pdf

“Retaining walls not exceeding 2 ft in height”

Source: https://www.phila.gov/media/20260602151416/StartRight-FINAL-6.2026.pdf

Verified: · Status: verified · Confidence: high

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Other projects in Philadelphia

Retaining wall permits in other cities

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