Studio Detached ADU 

440 sq. ft.

BRO-BA1-440

• Size: 440 sq. ft.
• Model: BR0-BA1-440
• Layout: Studio + 1 bathroom, detached single-story
• Shape: Square (21' x 21')

The BR0-BA1-440 maximizes its 21' x 21' square footprint with an open design:

• Studio Living Space – A combined 20' x 15'-5" area that functions as a bedroom, living room, and flex space.
• Bathroom – A full-sized bathroom with modern finishes, easily accessible from the shared space.
• Kitchen – Positioned along one wall, offering efficiency and options for upgrades.

At Pacific Sands, we know many homeowners are looking for a simple, open, and flexible ADU design. The BR0-BA1-440 Model is our only studio floor plan, offering a 440 sq. ft. detached ADU with a modern, hotel-inspired layout that feels bigger than its compact size.  

This plan is perfect for mid-term rentals, guest units, or multipurpose living spaces such as a home office, gym, or creative studio.

True Studio Design

• Open-concept space ideal for a variety of uses: rental, office, gym, or guest suite.
• Option to add a Murphy Bed for sleeping flexibility without sacrificing floor space.
• Surprisingly includes three closets—a rare storage solution for a compact ADU.

Efficient Square Shape

• Compact 21' x 21' layout ensures functional flow without wasted space.
• Designed for entertaining with a combined living/kitchen area.

Straight Line Kitchen Layout

• All appliances aligned on one wall for ease of use.
• Spacious 12'4" x 7' layout allows room for cooking and dining prep.
• Optional peninsula or small island upgrade for extra storage and seating.

Full Bathroom

• Private, modern bathroom with shower/tub combo and quartz vanity.
• Integrated shelving and practical finishes included.

Rental-Ready – Mimics a modern hotel room layout, making it perfect for mid-term rental markets (Airbnb, VRBO, Zillow).

Flexible Use – Works equally well as a long-term rental, family extension, office, or personal retreat.

Affordable & Compact – Lower construction and maintenance costs with maximum functionality.

Market Appeal – Studio layouts are in demand for renters and flexible-use buyers.

Smart Storage – With three closets, this studio offers more storage than most ADUs of similar size.

The BR0-BA1-440 Detached ADU is perfect for homeowners who want a highly versatile, compact unit that appeals to both renters and personal use. Its open studio layout, combined with thoughtful storage, modern finishes, and a full kitchen + bathroom, makes it one of the most functional sub-500 sq. ft. designs available.

At Pacific Sands, we also provide permitting support and design customization, ensuring the BR0-BA1-440 aligns with your goals and property.