Pre-approved ADU plans in San Diego County
Pre-approved ADU plan sets across San Diego County and its cities, with the size, bedrooms and price of each, and which city approved it.
San Diego County is unusual: rather than one regional catalog, several cities each run their own, and a plan pre-approved in one of them is not automatically pre-approved in the next. The list below is every plan A-du has published across those catalogs, and each plan page names the jurisdictions its approval actually covers.
Read the jurisdiction line before you fall in love with a design. A plan approved by Chula Vista saves you the design review in Chula Vista; in a neighbouring city it is an ordinary set of drawings. For what the county and its cities require either way, see ADU rules in San Diego.
23 plans published here, every one of them free to download, ranging 484 to 1,200 square feet.
The plans
Escondido Pre-Approved ADU — Studio, 484 sq ft
484 sq ft · Studio · 1 bath
Free plan set · Escondido (PAADU)
San Marcos Pre-Approved ADU — 1 Bedroom, 498 sq ft
498 sq ft · 1 bed · 1 bath
Free plan set · San Marcos (PRADU)
Chula Vista Pre-Approved ADU — 1 Bedroom, 498 sq ft
498 sq ft · 1 bed · 1 bath
Free plan set · Chula Vista (Standard ADU Plans)
Imperial Beach Pre-Approved ADU — Studio, 600 sq ft
600 sq ft · Studio · 1 bath
Free plan set · Imperial Beach (Pre-Approved ADU Plans)
San Diego County Pre-Approved ADU — 1 Bedroom, 600 sq ft
600 sq ft · 1 bed · 1 bath
Free plan set · San Diego County (PDS Standard Plans)
Escondido Pre-Approved ADU — 2 Bedroom, 644 sq ft
644 sq ft · 2 bed · 1 bath
Free plan set · Escondido (PAADU)
Chula Vista Pre-Approved ADU — 2 Bedroom, 748 sq ft
748 sq ft · 2 bed · 1 bath
Free plan set · Chula Vista (Standard ADU Plans)
San Marcos Pre-Approved ADU — 2 Bedroom, 748 sq ft
748 sq ft · 2 bed · 2 bath
Free plan set · San Marcos (PRADU)
Chula Vista Pre-Approved ADU — 2 Bedroom Square, 749 sq ft
749 sq ft · 2 bed · 1 bath
Free plan set · Chula Vista (Standard ADU Plans)
Chula Vista Pre-Approved ADU — 2 Bedroom L-Shape, 749 sq ft
749 sq ft · 2 bed · 1 bath
Free plan set · Chula Vista (Standard ADU Plans)
San Marcos Pre-Approved ADU — 2 Bedroom, 749 sq ft
749 sq ft · 2 bed · 1 bath
Free plan set · San Marcos (PRADU)
San Diego County Pre-Approved ADU — 1 Bedroom, 800 sq ft
800 sq ft · 1 bed · 1 bath
Free plan set · San Diego County (PDS Standard Plans)
Escondido Pre-Approved ADU — 2 Bedroom, 851 sq ft
851 sq ft · 2 bed · 2 bath
Free plan set · Escondido (PAADU)
San Marcos Pre-Approved ADU — 2 Bedroom, 863 sq ft
863 sq ft · 2 bed · 1 bath
Free plan set · San Marcos (PRADU)
San Marcos Pre-Approved ADU — 3 Bedroom, 992 sq ft
992 sq ft · 3 bed · 2 bath
Free plan set · San Marcos (PRADU)
San Marcos Pre-Approved ADU — 3 Bedroom, 999 sq ft
999 sq ft · 3 bed · 2 bath
Free plan set · San Marcos (PRADU)
Chula Vista Pre-Approved ADU — 3 Bedroom, 999 sq ft
999 sq ft · 3 bed · 1 bath
Free plan set · Chula Vista (Standard ADU Plans)
Escondido Pre-Approved ADU — 3 Bedroom, 1000 sq ft
1,000 sq ft · 3 bed · 2 bath
Free plan set · Escondido (PAADU)
San Diego County Pre-Approved ADU — 1 Bedroom, 1000 sq ft
1,000 sq ft · 1 bed · 1.5 bath
Free plan set · San Diego County (PDS Standard Plans)
Chula Vista Pre-Approved ADU — 3 Bedroom, 1199 sq ft
1,199 sq ft · 3 bed · 1 bath
Free plan set · Chula Vista (Standard ADU Plans)
San Diego County Pre-Approved ADU — 2 Bedroom 1 Bath (PDS-673), 1200 sq ft
1,200 sq ft · 2 bed · 1 bath
Free plan set · San Diego County (PDS Standard Plans)
San Diego County Pre-Approved ADU — 2 Bedroom 2 Bath (PDS-675), 1200 sq ft
1,200 sq ft · 2 bed · 2 bath
Free plan set · San Diego County (PDS Standard Plans)
San Diego County Pre-Approved ADU — 3 Bedroom, 1200 sq ft
1,200 sq ft · 3 bed · 1 bath
Free plan set · San Diego County (PDS Standard Plans)
Once you have picked one
A plan is the cheapest part of an ADU and the last thing that decides whether one can be built. What the lot allows, what the city requires and what the permit costs are the parts worth checking first.