Erie County has no countywide retaining-wall ordinance. Retaining walls are regulated by your city, town, or village, often through the building code and zoning. Taller walls typically need a permit and engineered drawings.
Retaining-wall rules are municipal, not countywide, in Erie County. Your town, village, or the City of Buffalo sets permit thresholds and setbacks through its zoning and building codes, which enforce the New York State Uniform Code locally. A common threshold statewide is that walls retaining more than about 4 feet of soil require a permit and engineered plans, but confirm the figure with your municipality. Zoning codes often treat a necessary retaining wall differently from a fence. For example, the Town of Amherst exempts a necessary retaining wall from the 3-foot front-yard fence limit. Check your local code for permit height, drainage, and setback requirements.
Enforced by the local building department; unpermitted or failing walls can bring stop-work orders, fines, and required corrective engineering.
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See how Buffalo's retaining walls rules stack up against other locations.
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