HOUSING – Adds to existing law to establish provisions regarding regulation of twin homes and duplexes.

Idaho's S 1280 prohibits restrictive covenants that ban duplexes or "twin homes" (two separate living units sharing a wall on single-family lots) and requires local governments to allow these housing types in areas zoned for single-family homes. The bill voids existing covenants that restrict such developments and mandates local zoning changes to permit twin homes/duplexes without unreasonable lot size, parking, or fee requirements. It also requires local approvals for these projects to be automatic (like single-family homes) without discretionary delays. The law applies statewide except in historic districts and takes effect July 1, 2026.