05/07/2026
Big news for Sun Prairie homeowners — the city just officially passed an ADU ordinance, and it's a good one.
No owner-occupancy requirement. You can build up to 1,000 sq ft, attached or detached, and the city even allows up to three total dwellings on a single lot.
That puts Sun Prairie right up there with Madison as one of the most ADU-friendly cities in Dane County.
Read more on our blog.
https://www.boundlesstinyhomes.com/blog/sun-prairie-adu-ordinance/