Pittsburgh Retaining Walls Along Streets and Sidewalks

Ask DOMI About the Wall’s Right-of-Way Position

Pittsburgh’s Department of Mobility and Infrastructure identifies retaining walls among structures that can require major-encroachment review when they occupy the public right-of-way. Ask DOMI to evaluate the actual boundary and proposal rather than assuming the sidewalk edge or curb marks the private property line. Provide available survey and earlier permit information.

Show the existing wall, proposed footprint, foundations, and any projections. Ask whether rebuilding, moving, or changing the wall alters the required process. Keep the answer with the design documents and explain it to each bidder. If the boundary remains uncertain, resolve that uncertainty before demolition or ordering materials for a wall that may need a different location.

Coordinate Construction Review with Public Access

The city’s permit resources distinguish building review from work affecting public space and direct applicants through its permit system. Ask which construction, right-of-way, and temporary access approvals apply to excavation, staging, sidewalk use, and restoration. An encroachment decision about the finished structure should not be treated as permission for every construction activity around it.

Have the contractor show how pedestrians and occupants will move safely while the wall is open. Identify equipment locations, material deliveries, and spoil removal. Ask who submits applications and arranges required inspections. Where the work affects a neighboring property, establish access arrangements before the crew arrives rather than assuming they can use the adjacent yard.

Assess the Ground and Water Behind the Wall

Ask an appropriate professional to identify the wall’s height, loads, foundation conditions, and signs of movement. Request an explanation of whether the proposed work repairs the existing structure or replaces it with a different system. The assessment should state what remains concealed and whether further investigation is needed before a final design or price can be reliable.

Have the designer explain drainage behind the wall and the proposed outlet. Include slopes, buildings, pavement, and utilities above or beside the work. Ask how temporary excavation will be managed without undermining retained ground or nearby improvements. A promise to rebuild quickly is not a substitute for a workable construction sequence and clear responsibility for structural decisions.

Keep Street Restoration and Concealed Details in the Scope

Itemize demolition, temporary measures, foundation work, wall construction, drainage, and surface restoration. Identify allowances for unexpected ground or old foundations and agree how changes will be approved. Specify the finished appearance separately from the structural design so a change in facing material does not obscure a change in the underlying system.

Before backfilling, retain inspection evidence where required and photographs of drainage and foundations. At completion, inspect the sidewalk, street edge, outlets, and restored access with the contractor. Obtain the final approvals and maintenance instructions. Keep the drawings with the property records so future work above the wall can be evaluated against the structure that was actually built.

Sources And Local Resources

Official sources checked October 17, 2026. Confirm current requirements with the authority responsible for your property.

• Encroachment Permit - Pittsburgh, PAPittsburgh major-encroachment guidance includes retaining walls within the public right-of-way.
• Permits, Licenses, and Inspections - Pittsburgh, PAPittsburgh permit and inspection resources establish the project-review route; specific approvals require city determination.