Lancaster County, PA Building Setbacks & Zoning: Lot Coverage Limits (2026)

Maximum lot (or impervious) coverage, the share of a lot that buildings and paving may cover, is a municipal zoning standard, not a county rule. MPC §603(b) authorizes municipalities to regulate the “areas and dimensions of land… to be occupied by uses and structures.” Lancaster City's Chapter 300 sets coverage by district (for example, up to 70% building coverage and 85% lot coverage in denser districts), while lower-density townships allow much less. Coverage limits interact with stormwater rules enforced by the Lancaster County Conservation District. Because the figure depends on your specific district among the county's 60 municipalities, confirm it in your local zoning ordinance's dimensional table.