4 Bed, 3 Bath Detached ADU – 1200 sq. ft.

BR4-BA3-1200a

Plan Details

  • Size: 1200 sq. ft.
  • Model: BR4-BA3-1200a
  • Layout: 4 bedrooms, 3 bathrooms, detached single-story

Incredible 4 Bedroom, 3 Bathroom Layout

Yes, you read that right — the BR4-BA3-1200a fits four full bedrooms and three bathrooms into 1200 sq. ft. This design is perfect for families, multi-generational living, or investors who want to make the most of every square foot with a high bedroom count.

At Pacific Sands, we believe in creating ADUs that balance efficiency, flexibility, and cost-effectiveness while maximizing livable space. The BR4-BA3-1200a Model is one of our largest detached ADUs at 1200 sq. ft., designed for homeowners who want to maximize their property’s potential with a spacious, functional layout.


Key Features

4 Bedrooms

  • One of the few ADU layouts that includes four separate bedrooms.
  • Excellent for maximizing occupancy or rental income potential.

3 Full Bathrooms

  • Each with a shower/tub combo and integrated shelving, quartz countertops, and single-sink vanities.
  • Designed to support households of all sizes, especially families with children.

Cohesive Shared Space

  • Includes a 68 sq. ft. kitchen and a spacious 366 sq. ft. living room.
  • Open-concept design encourages natural flow between cooking, dining, and living.
  • Ideal for hosting family gatherings or dinner parties.

Benefits for Homeowners

  • Spacious & Versatile – A true full-home experience within an ADU footprint.
  • Family-Ready – Perfect for multi-generational households, larger families, or shared living arrangements.
  • High Investment Potential – Four bedrooms and three bathrooms make this unit especially attractive for rentals.
  • Flexible Living – Can be used as a guest house, rental, or private retreat without feeling cramped.
  • Property Value – Adds significant functional living space and increases long-term resale value.

Why Choose the BR4-BA3-1200a Model?

The BR4-BA3-1200a Detached ADU is designed for homeowners who want maximum functionality and flexibility in a 1200 sq. ft. footprint. With its rare four-bedroom configuration, multiple bathrooms, and seamless open living spaces, it’s one of the most versatile and investment-friendly models we offer.


At Pacific Sands, we don’t just design floor plans—we also provide permitting guidance and customization options, ensuring your ADU is tailored to your lot and lifestyle.


1 bedroom ADU 3D drawing
2 bedroom ADU 3D model
3 bedroom ADU 3D model
4 Bedroom ADU 3D model
2 unit ADU floorplan

Industry Experts

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Budget Wise

We understand the importance of staying in your budget, and we design with building costs as a primary factor.