5 county-level rules, plus city-specific rules for 2 cities in Guilford County, North Carolina.
Verified from official government sources
Guilford County allows accessory dwelling units (ADUs) on residential lots in unincorporated areas. You must first get zoning approval from Guilford County Planning & Development, then a building permit. An ADU needs its own kitchen, living area, bedroom, and bathroom and must meet the NC Residential Code.
In unincorporated Guilford County, small sheds are allowed but an accessory building with any dimension over 12 feet must meet the NC Residential Code. Prefabricated storage buildings and pre-engineered metal structures need manufacturer design plans sealed by a NC registered design professional.
Guilford County Planning & Development — Sign/Permit Guidance (Accessory Building or Structure)
An Accessory Building with any dimension greater than 12' must comply with the provisions of the NC Residential Code.
Converting a garage into living space in unincorporated Guilford County is a change of use that needs zoning approval plus a building permit. If the new space is a separate dwelling, it must meet the county's ADU rules and the NC Residential Code, including its own kitchen and bathroom.
Carports are accessory structures in unincorporated Guilford County. Because carports, gazebos, pavilions, and covered pergolas are not prescriptive in the NC Residential Code, the county requires design plans sealed by a NC registered design professional, plus zoning/setback approval.
Guilford County Planning & Development — Permit Guidance (Accessory Building or Structure)
Structures like gazebos, pavilions, carports, and covered pergolas also require professional engineering seals since they're not prescriptive in the NC Residential Code.
Guilford County has no special “tiny home” category; a tiny house on a permanent foundation is regulated as a dwelling under the NC Residential Code and the county's zoning and ADU rules. A tiny house on wheels is treated as an RV/manufactured unit and can't be used as a permanent
2 cities in Guilford County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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Guilford County Ordinance Hub →