A bill for an act relating to the regulation of styles and materials used for residential building exteriors.

This bill prevents Iowa counties and cities from passing local rules that restrict the types of exterior materials or styles homeowners can use on their residential buildings. It applies to single-family homes, duplexes, townhouses, and apartment buildings with up to twelve units, ensuring local regulations cannot be stricter than the state building code. However, the law allows local governments to maintain restrictions on specific materials if a property is located in a historic district, designated as a historic landmark, part of a common interest community, or within a special zoning overlay. By limiting local authority in these areas, the legislation aims to prevent conflicts between local aesthetic rules and state building standards while preserving protections for historic and planned communities.