Exterior render: compact detached ADU with light horizontal siding, dark-framed windows, and a low-profile hip roof
Floor Plan
Studio layout: Murphy bed, full bath, W&D, open living/dining, kitchen, and open front porch
Exterior Elevations
Front & Rear Elevation
Left & Right Elevation
| ADU Type | Detached Studio |
| Total Area | 450 sq ft |
| Footprint | 25' × 18' |
| Ceiling Height | 9 ft |
| Roofline | Hip Roof |
| Exterior Cladding | Horizontal Lap Siding |
| Porch | Yes–Open Porch |
| Laundry | In-unit W/D |
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.
About This PlanThis 450 sq ft studio is designed to make efficient use of a compact footprint while providing the essentials for independent living. The open studio layout offers a flexible living area, while the full bathroom and in-unit washer and dryer add everyday convenience.
At 25' × 18', this plan has a narrow rectangular footprint that can work well on properties where building width is a consideration. The hip roof gives the exterior a traditional profile, while the compact single-story design keeps the overall layout straightforward.
Important — Not Construction Documents These drawings are concept-level plans intended to help you visualize layout and exterior design. They are not stamped architectural or engineering documents and cannot be submitted for permit as-is. ADU Simplified is a research and information resource, not a licensed US contractor or design firm. Always verify ADU regulations with your local building department before proceeding.
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What's in the Free PDF Download
450 sq ft Studio Detached ADU
Size450 sq ft
TypeStudio
Footprint20' × 18'
RooflineHip Roof
PorchYes
LaundryIn-unit W/D
Disclaimer: This plan sheet is provided for informational and conceptual purposes only. It is not a stamped architectural drawing, engineering document, or construction-ready set of plans. These drawings cannot be submitted for building permit as-is. ADU regulations, setback requirements, height limits, and lot coverage rules vary by jurisdiction. Always consult your local building department and a licensed professional before beginning any construction. ADU Simplified is a research and information resource, not a licensed US contractor, architect, or permit officer.
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