NC S25

Restricts when counties and municipalities can apply zoning ordinances related to building design elements to single- and two-family residential structures, except in specific circumstances including historic districts and historic landmarks.

Permits design control regulations only in: local historic districts, National Register historic districts, individually designated historic landmarks, safety code-related regulations, manufactured housing consistent with state law, or National Flood Insurance Program requirements.

Defines "building design elements" as exterior color, cladding materials, roof/porch styles, architectural ornamentation, window/door styling, room types, and interior layout; excludes height, bulk, orientation, location, screening/buffering, and land use regulations.

Prohibits indirect application of design regulations through zoning amendments or comprehensive plan consistency reviews unless all affected property owners voluntarily consent.

Preserves validity of private covenants and contractual agreements among property owners relating to building design elements; effective upon enactment and applies to ordinances adopted before, on, or after the effective date.