Welcome to the ultimate resource for building an accessory dwelling unit (ADU) in Los Angeles. Whether you’re a homeowner seeking flexibility for your family or an investor aiming to add value, our comprehensive guide has you covered every step of the way. Explore what’s possible on your property through in-depth information on ADU regulations, floor plans and a showcase of active and completed projects. You’ll also find ADU cost estimates, rental data and inspiring stories from other homeowners.
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Los Angeles (Downtown LA)
Updated as of: 12/31/2024
What Can you Build on Single Family
Maximum Attached ADUs area
1200 sqft
Maximum Detached ADUs area
1200 sqft
Setbacks
4' Side, 4' Rear
Height Limit
Two stories OR based on zoning code
Single FAMILY
Permitting Timeline
4-6 months
Coastal
Permitting
N/A
What Can you Build on Multi Unit
Maximum Attached ADUs area
Converted from nonhabitable space
Maximum Detached ADUs area
1200 sqft
Multi-unit Maximum ADUs
25% of existing units as attached ADUs (min 1) and up to eight detached units (min 2)
Setbacks
4' Side, 4' Rear
Height Limit
Two stories OR based on zoning code
Multi UnitPermitting Timeline
4-6 months
Coastal
Permitting
N/A
Zipcodes
:
90012, 90013, 90014, 90015
City
:
Los Angeles