1,400 sq ft 3-Bedroom 2-Bath Detached ADU
Exterior render: contemporary two-level detached ADU with a light stucco exterior,and a covered entry porch with flat roof.
3-bedroom layout: three private bedrooms, two full baths, laundry room, open living/dining, kitchen, and covered front porch.
Front & Rear Elevation
Left & Right Elevation
| ADU Type | Detached 3-bedroom |
| Total Area | 1400 sq ft |
| Footprint | 35' × 40' |
| Ceiling Height | 12 ft |
| Roofline | Shed Roof |
| Exterior Cladding | White Stucco Siding |
| Porch | Yes–Covered Porch |
| Laundry | Laundry Room |
Estimated build costs vary by location, contractor, and finish level. See our ADU Cost Guide for a full breakdown of what drives ADU construction costs in your state.
This 1,400 sq ft three-bedroom ADU offers a generous amount of space for a detached residential design. The three separate bedrooms provide flexibility for different household arrangements, while two full bathrooms and a dedicated laundry room add practical everyday convenience. A covered front porch extends the living area outdoors and creates a welcoming space.
At 35' × 40', this plan has a substantial rectangular footprint with room for a more spacious interior arrangement. The shed gives the exterior a distinctive modern profile, while falt roof on the covered porch adds a modern look to the entrance.
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