Tippecanoe County, IN Building Setbacks & Zoning: Lot Coverage Limits (2026)

The Unified Zoning Ordinance, adopted jointly by unincorporated Tippecanoe County, the cities of Lafayette and West Lafayette, and the Towns of Battle Ground, Clarks Hill and Dayton, and administered by the Area Plan Commission, defines lot coverage as the horizontal area of all buildings on a lot, measured to the outside of the exterior ground-floor walls, expressed as a percentage of total lot area (§ 1-10-2). The definition sweeps in roofed decks, porches and any architectural feature projecting more than 2 feet, but excludes unroofed decks, porches and shorter projections, so a covered porch counts toward the cap while an open patio does not.

Coverage limits vary by zone. The R1 Single-Family Residential zone caps coverage at 30% with a 40% minimum vegetative cover requirement (§ 2-1). The R1B zone allows 35% coverage with 35% minimum vegetative cover (§ 2-3-6, Amend 44). The R1C zone, built for smaller-lot single-family development on public water and sewer, permits 40% coverage with a 30% vegetative-cover floor (§ 2-4-6). The R1U townhouse zone runs much higher, up to 80% lot coverage (§ 2-6-6), reflecting its higher-density design. A property owner has to check the zoning map for the parcel's actual district before assuming a number, since the zone tables in Chapter 2 do not share one countywide limit.

The Area Plan Commission's staff reviews coverage as part of the building permit and improvement location permit process; a plan that exceeds the district's cap cannot be approved without a variance from the Area Board of Zoning Appeals.