5 rules for unincorporated Sarpy County, Nebraska.
Verified from official government sources
Nebraska has no statewide ADU mandate — the proposed LB 1166 was never enacted. In unincorporated Sarpy County an accessory dwelling is a zoning question, decided through the county's special use process, with a building permit under the adopted 2018 IRC.
Neb. Rev. Stat. §71-6406(1)(a)
Any county, city, or village may enact, administer, or enforce a local building or construction code if or as long as such county, city, or village: (i) Adopts the state building code; or (ii) Adopts a building or construction code that conforms generally with the state building code.
A small shed skips the building permit in unincorporated Sarpy County — the adopted 2018 IRC exempts one-story detached accessory buildings of 200 square feet or less. Zoning still caps all buildings at 40% of a residential lot.
Sarpy County, NE, Zoning Regulations Sec. 34.7.1
All buildings, including accessory buildings on any lot, shall not cover more than forty percent of the area of such lot, outlot, or parcel if in a Residential District, nor more than seventy-five percent if in any other district.
Turning a garage into living space is permitted work in Sarpy County. The adopted 2018 IRC treats the change of use as habitable construction, so a building permit and inspection for egress, insulation, and alarms come first.
Neb. Rev. Stat. §71-6403(1)(b)
The International Residential Code (IRC), 2018 edition, except section R313 and chapters 25 through 33, published by the International Code Council
A carport is a roofed accessory structure in Sarpy County, so it needs a building permit and must fit the county's coverage and setback limits. Section 34.7.1 caps all buildings at 40 percent of a residential lot.
Sarpy County, NE, Zoning Regulations Sec. 34.7.1
All buildings, including accessory buildings on any lot, shall not cover more than forty percent of the area of such lot, outlot, or parcel if in a Residential District, nor more than seventy-five percent if in any other district.
A tiny home's status in Sarpy County turns on its foundation. On a permanent foundation it is a dwelling under the adopted 2018 IRC; on wheels it is a titled RV that county zoning does not treat as a permanent home.
Neb. Rev. Stat. §71-6403(1)(b)
The International Residential Code (IRC), 2018 edition, except section R313 and chapters 25 through 33, published by the International Code Council
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