Start with the outside dimensions and sketch the inside: split the shell into rooms, drag the walls, drop in a kitchen, bath, beds and furniture, and see at a glance where a walkway gets tighter than three feet. The tool keeps you inside East Providence’s limits for an accessory dwelling unit: 1,200 square feet of gross floor area, 20 feet in height and two stories, with a code based stair that connects the floors automatically.

Looking for a layout to model yours on? The Massachusetts ADU Design Challenge showcase has award winning detached ADU plans with full design packages. This is a planning sketch, not a construction document. Confirm zoning, setbacks and code with the City before you build.

ADU Floor Plan Studio

Set the outside dimensions, divide the rooms, drop in furniture, and watch the clear pathways.
East Providence ADU: max 1,200 sf gross · 20 ft height · 2 stories
0 sf gross floor area of 1,200
Drag walls to resize rooms. Drag the stair to relocate it; the upper-floor opening follows automatically.
Clear pathway (≥ 3'-0")Pinch pointWallStair opening