In Philadelphia, decks within building lines that are not more than 12 inches above the ground surface and not over any basement do not require a permit. Elevated decks and covered patios require building permits. Fees start at $200 plus $48 per additional 100 sq ft above 500 sq ft.
Philadelphia's building code provides specific exemptions for certain low-level deck and patio construction. Decks within building lines that are not more than 12 inches above the ground surface below and not over any basement or story below do not require a building permit. Concrete patios, walkways, and driveways on grade used for non-parking purposes are also exempt. Elevated decks, rooftop decks, and covered patio structures require building permits from L&I. The permit fee for decks and alterations starts at $200 plus $48 for each additional 100 square feet or fraction thereof above 500 square feet. Applications are submitted through the eCLIPSE online portal. A zoning permit may also be required to verify compliance with setback and coverage requirements. Structural plans may be required for elevated decks. Electrical permits are needed if the deck includes lighting or outlets. Inspections are required for all permitted deck construction.
Building an elevated deck without a permit can result in stop-work orders, Code Violation Notices, fines, and potential order to demolish. Unpermitted structures may affect property sale and insurance.
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See how Philadelphia's deck & patio permits rules stack up against other locations.
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