Lot coverage is capped by city ordinance. In the Fishers R3 single-family district, maximum lot coverage is 40% (50% for a lot abutting Geist Reservoir). Coverage rules limit how much of your lot buildings and structures may occupy.
Hamilton County cities cap lot coverage through their zoning ordinances under IC 36-7-4. In the Fishers UDO R3 Residential District (Sec. 3.2.4), the maximum lot coverage is 40 percent, increased to 50 percent for a lot abutting Geist Reservoir. Coverage generally measures the share of the lot occupied by the principal and accessory buildings and structures. Carmel, Westfield, and Noblesville set their own coverage standards by district, and denser districts allow higher coverage. Only unincorporated parcels follow the county Plan Commission's standards. Because coverage combines with setbacks, height, and minimum lot area, confirm your parcel's city and zoning district before planning an addition, pool, or accessory building.
Exceeding the district coverage maximum is a zoning violation; the city may deny the permit or require a variance from the Board of Zoning Appeals.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Hamilton County's lot coverage limits rules stack up against other locations.
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