ADU Resource Center

ADU Floor Plans by Size

1,200 Sq Ft ADU Floor Plans

A 1,200 sq ft ADU is the largest detached ADU LA typically allows — a full 3-bedroom home in your backyard, ideal for multigenerational living or top-tier rent.

Showing 18 1,200 sq ft designs. Every plan is customizable to your lot. See 1,200 sq ft cost →

1 Bedroom ADU floor plan

1 Bedroom

2 BR 400-600 sqft600-800 sqft
2 Bedroom ADU floor plan

2 Bedroom

2 BR 600-800 sqft800+ sqft
2 Bedroom ADU floor plan

2 Bedroom

2 BR 800+ sqft
2 Bedroom ADU floor plan

2 Bedroom

2 BR 600-800 sqft800+ sqft
2 Bedroom ADU floor plan

2 Bedroom

2 BR 600-800 sqft800+ sqft
Creative 2-Story 2 Bedroom ADU floor plan

Creative 2-Story 2 Bedroom

2 BR 400-600 sqft600-800 sqft
Large 2 Bedroom ADU floor plan

Large 2 Bedroom

2 BR 600-800 sqft800+ sqft
Large 2 Bedroom ADU floor plan

Large 2 Bedroom

2 BR 600-800 sqft800+ sqft
Large 2 Bedroom ADU floor plan

Large 2 Bedroom

2 BR 600-800 sqft800+ sqft
Large 2 Bedroom ADU floor plan

Large 2 Bedroom

2 BR 600-800 sqft800+ sqft
Large 2 Bedroom ADU floor plan

Large 2 Bedroom

2 BR 800+ sqft
3 Bedroom ADU floor plan

3 Bedroom

3 BR 600-800 sqft800+ sqft
Creative “L-Shaped” 3 Bedroom ADU floor plan

Creative “L-Shaped” 3 Bedroom

3 BR 600-800 sqft800+ sqft
Large 3 Bedroom – 2 ADU floor plan

Large 3 Bedroom – 2

3 BR 600-800 sqft800+ sqft
Large 3 Bedroom – 3 ADU floor plan

Large 3 Bedroom – 3

3 BR 800+ sqft
Large 3 Bedroom ADU floor plan

Large 3 Bedroom

3 BR 600-800 sqft800+ sqft
Wide Open 3 Bedroom ADU floor plan

Wide Open 3 Bedroom

3 BR 800+ sqft
Wide Open 4 Bedrooms ADU floor plan

Wide Open 4 Bedrooms

4 BR 800+ sqft

Browse other sizes

500 Sq Ft600 Sq Ft700 Sq Ft800 Sq Ft900 Sq Ft1,000 Sq Ft
Studio1 bedroom2 bedroom3 bedroom4 bedroom