Garage conversion rules in Lancaster County, NE — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a Lincoln garage into a separate living unit creates an accessory dwelling, which must meet Section 27.62.040(c): the owner must live on-site, the unit is capped at 800 square feet and one bedroom, and a recorded deed restriction bars selling it separately from the main house.
Lincoln has no separate 'garage conversion' rule; the outcome depends on use. Finishing garage space that stays part of the house (attached, or within six feet of the main building) follows the main building's yard and height rules under Section 27.72.120(a). Creating a second, independent dwelling makes it an accessory dwelling governed by Section 27.62.040(c): allowed only in R-1 through R-4, capped at the lesser of 40% of the main house or 800 square feet, one bedroom, shared utilities, one added parking stall, owner occupancy, and a recorded deed restriction. A building permit and inspection through Lincoln Building and Safety are required. Unincorporated acreages follow the Lancaster County Zoning Resolution.
Converting a garage into an unpermitted second dwelling, or without owner occupancy and the required deed restriction, is a zoning and building-code violation subject to Lincoln Building and Safety enforcement.
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