Pre-approved

Los Angeles County Standard ADU Plan A

1,200 sq ft 3 beds 2 baths Detached
Los Angeles County Government PDF
View official source View plan document Claim/update this listing Send correction

Details

Plan facts

Plan identifier
Standard Plan A / No. 27001
Accepted locations
Status
Pre-approved
Size
1,200 sq ft
Bedrooms
3 beds
Bathrooms
2 baths
ADU type
Detached
Construction type
Unknown
Plan fee
$0
Estimated cost
Not listed in source
Last checked
May 1, 2026

Plan notes

Notes

Foundation notes
PDF limitations state the standard plan does not apply to hillside properties, very high fire hazard severity zones, geologic hazard zones, methane gas hazard zones, flood hazard zones, restricted use areas, septic tank areas, or enforcement cases.
Utility notes
Not listed in source
Energy notes
Site-specific Title 24 energy calculations are still required.
Accessibility notes
Not listed in source
Permit fee notes
County plan use does not eliminate site-specific review, referral, or permit fees.
Cost notes
County-owned standard ADU plans are described as free to the public.
Additional notes
County Public Works says county-owned plans are free to the public and still require an approved site-specific plot plan, site-specific Title 24 energy calculations, and agency referral items. The County Planning catalog page also states standard ADU plans need updates for 2026 building code requirements. PDF limitations state the standard plan does not apply to hillside properties, very high fire hazard severity zones, geologic hazard zones, methane gas hazard zones, flood hazard zones, restricted use areas, septic tank areas, or enforcement cases. County Public Works landing page summarizes Plan A as 3 bedrooms and 1 bathroom, but the official PDF floor plan shows two bathroom areas; bathroom count in this database follows the PDF.

Source and evidence

2024 Los Angeles County ADU Standard Plan A

Government PDF
Publisher
Los Angeles County Department of Regional Planning / Public Works
Source type
Government PDF
Reliability
Official government PDF (4/5)
Last checked
May 1, 2026
Accessed
May 1, 2026
Official source Plan page Plan document

Accepted-in locations

Accepted Locations

1 accepted location

Government PDF
Source
2024 Los Angeles County ADU Standard Plan A
Last checked
May 1, 2026

County Public Works says county-owned plans are free to the public and still require an approved site-specific plot plan, site-specific Title 24 energy calculations, and agency referral items. The County Planning catalog page also states standard ADU plans need updates for 2026 building code requirements. PDF limitations state the standard plan does not apply to hillside properties, very high fire hazard severity zones, geologic hazard zones, methane gas hazard zones, flood hazard zones, restricted use areas, septic tank areas, or enforcement cases. County Public Works landing page summarizes Plan A as 3 bedrooms and 1 bathroom, but the official PDF floor plan shows two bathroom areas; bathroom count in this database follows the PDF.

Official source Plan document