Pennsylvania's Uniform Construction Code sets the statewide permit threshold and engineering standards for retaining walls regardless of municipality.
Under the Pennsylvania Uniform Construction Code (Act 45 of 1999, 35 P.S. 7210.101 et seq.) and 34 Pa. Code Chapter 403, retaining walls over 4 feet in height measured from the bottom of the footing to the top of the wall, or any wall supporting a surcharge, require a building permit and engineered design under the International Building and Residential Codes. This threshold applies in all Pennsylvania municipalities that enforce the UCC. Walls under 4 feet without surcharge are exempt from permit, though local zoning and stormwater rules may still apply.
Pennsylvania UCC violations carry fines up to $1,000 per offense under 35 P.S. 7210.903, plus stop-work orders and required removal or reconstruction. Failed walls causing damage may trigger civil liability and insurance claims.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Harrisburg, PA
Harrisburg enforces citywide quiet hours from 10:00 PM to 7:00 AM under Harrisburg City Code Chapter 3-503. During these hours, sound audible at the property...
Harrisburg, PA
Harrisburg administers on-street parking under City Code Title 10 with day-to-day operations contracted to Park Harrisburg (SP+ Municipal Services). Resident...
Harrisburg, PA
Harrisburg requires every dog in a public space to be leashed and under the control of a person physically able to restrain it, with a maximum leash length o...
Harrisburg, PA
Pennsylvania Act 43 of 2017 legalized consumer-grade (1.4G) fireworks statewide for adults 18+. Harrisburg uses its home rule authority and the 150-foot rule...
Harrisburg, PA
Harrisburg requires owners to maintain grass and weeds on residential lots at or below 10 inches in height under Property Maintenance Code Ch. 5-301. Violati...
See how Harrisburg's retaining walls rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.