ID S1353

Cities with populations greater than 5,000 are prohibited from banning twin homes or duplexes in any residential zone where single-family dwellings are permitted

By October 1, 2026, affected cities must amend their comprehensive plans and land use regulations to permit twin homes and duplexes on any lot allowing single-family homes, except in designated historic districts

Cities cannot impose minimum lot size requirements that effectively prohibit twin homes or duplexes, and cannot require more than one off-street parking space per dwelling unit

Impact fees and utility connection fees for twin homes or duplexes cannot exceed those charged for single-family dwellings on a per-unit basis

Twin home and duplex projects meeting land use requirements must receive administrative approval as a matter of right, without discretionary review, using the same process as single-family homes