Pre-approved

Los Angeles County Standard ADU Plan A

1,200 sq ft 3 beds 2 baths Detached

Details

Plan facts

Plan 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

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

Accepted-in locations

1 accepted location

Pre-approved

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.