At 729 square feet, the B-729 approaches 2-bedroom livability in a 1-bedroom layout. The additional space relative to the B-705 allows for kitchen configurations that include an island, which significantly improves the kitchen’s function and its visual impact. For a rental ADU, an island kitchen is a meaningful differentiator in Madison’s rental market. Note that some Dane County municipalities cap ADU size at 800 square feet or a percentage of the primary home’s floor area — confirm that the B-729 fits your specific municipality’s limits during the feasibility check.