1,350 sq ft 2-Bedroom 2-Storey Detached ADU
Exterior render: two-storey brick ADU with a flat roof, a covered back porch, and an upper-level balcony.
Main Level Floor Plan
Upper Level Floor Plan
Two-storey layout: two bedrooms, two full baths, powder room, laundry room, open living/dining, kitchen, and covered back porch
Front & Rear Elevation
Left & Right Elevation
| ADU Type | 2-storey Detached ADU |
| Total Area | 1350 sq ft |
| Footprint | 25' × 27' |
| Ceiling Height | 9 ft |
| Roofline | Flat Roof |
| Exterior Cladding | Red Brick Siding |
| Porch | Yes–Covered Back 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 1,350 sq ft two-storey ADU provides a spacious arrangement across two levels, making efficient use of vertical space. The two separate bedrooms offer private sleeping areas, while the two-and-a-half-bathroom layout adds flexibility and convenience. A dedicated laundry room provides practical everyday functionality, and the covered back porch creates an outdoor area that complements the interior living space.
At 25' × 27', this plan has a compact rectangular footprint relative to its total floor area. The flat roof gives the exterior a contemporary architectural character, while the two-storey configuration creates additional living space without spreading the entire design across one level.
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What's in the Free PDF Download
Main Level Floor Plan
Upper Level Floor Plan
Exterior Render