The building department in our area is not a fan of tiny houses because of minimum square footage requirements in the residential building code; however, because we are on wheels and thus a non-permanent structure, they do not oversee our build. (tinyhouseblog.com)
When planning and zoning officials limit the number of houses that can be built in a neighborhood, or when they set minimum square footage for houses, they're limiting the supply of homes and making them more expensive. (trendinghomenews.com)
The national building codes and fire codes do speak to minimum size houses and rooms; municipal zoning may also have restraints on minimum square footage (square meters) for property that is designated as a permanent home and residential use. (tinyhomealliance.ca)