City of San Jose pre-approved ADU plans
The pre-approved ADU plans City of San Jose publishes, copied as published, with a link to the official page and the date A-du last checked it.
Pre-approved ADU plans
City of San Jose
14 plans in the index
A-du last checked the official page on November 3, 2026.
The plans
476 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU
1 bd · 1 ba · 476 sq ft
Not on A-du Build yet
Agency page488 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU
1 bd · 1 ba · 488 sq ft
Not on A-du Build yet
Agency page495 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU
1 bd · 1 ba · 495 sq ft
Not on A-du Build yet
Agency page499 sq. ft. Detached, 1STY, 2 bedroom 1 bath ADU
2 bd · 1 ba · 499 sq ft
Not on A-du Build yet
Agency page746 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 746 sq ft
Not on A-du Build yet
Agency page747 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 747 sq ft
Not on A-du Build yet
Agency page748 sq. ft. Detached, 1STY, 2 bedroom 1 bath ADU
2 bd · 1 ba · 748 sq ft
Not on A-du Build yet
Agency page749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 749 sq ft
Not on A-du Build yet
Agency page749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 749 sq ft
Not on A-du Build yet
Agency page749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 749 sq ft
Not on A-du Build yet
Agency page795 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 795 sq ft
Not on A-du Build yet
Agency page797 sq. ft. Detached, 2 STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 797 sq ft
Not on A-du Build yet
Agency page799 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
2 bd · 2 ba · 799 sq ft
Not on A-du Build yet
Agency page991 sq. ft. Detached, 1STY, 3 bedroom 2 bath ADU
3 bd · 2 ba · 991 sq ft
Not on A-du Build yet
Agency pageA-du is not affiliated with HCD or any city or county. This page copies what each agency publishes about its pre-approved ADU plans and links to the official page. Check the agency's page before you rely on anything here. Nothing on this page is legal advice.
Each plan as the agency publishes it
The details below are copied from the agency’s own pages, field by field, with the date A-du last checked each plan.
476 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU / J. Kretschmer Architect
- Description:
- 476 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU
- Bedrooms:
- 1
- Bathrooms:
- 1
- Designer:
- J. Kretschmer Architect
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
488 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU / Acton ADU
- Description:
- 488 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU
- Bedrooms:
- 1
- Bathrooms:
- 1
- Designer:
- Acton ADU
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
495 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU / APEX HOMES USA, INC
- Description:
- 495 sq. ft. Detached, 1STY, 1 bedroom 1 bath ADU
- Bedrooms:
- 1
- Bathrooms:
- 1
- Designer:
- APEX HOMES USA, INC
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
499 sq. ft. Detached, 1STY, 2 bedroom 1 bath ADU / Ca2Homes
- Description:
- 499 sq. ft. Detached, 1STY, 2 bedroom 1 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 1
- Designer:
- Ca2Homes
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
746 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / APEX HOMES USA, INC
- Description:
- 746 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- APEX HOMES USA, INC
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
747 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / Ca2Homes
- Description:
- 747 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- Ca2Homes
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
748 sq. ft. Detached, 1STY, 2 bedroom 1 bath ADU / J. Kretschmer Architect
- Description:
- 748 sq. ft. Detached, 1STY, 2 bedroom 1 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 1
- Designer:
- J. Kretschmer Architect
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / 9 Builders
- Description:
- 749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- 9 Builders
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / Acsiom Designs
- Description:
- 749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- Acsiom Designs
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / APEX HOMES USA, INC
- Description:
- 749 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- APEX HOMES USA, INC
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
795 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / LiveLarge
- Description:
- 795 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- LiveLarge
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
797 sq. ft. Detached, 2 STY, 2 bedroom 2 bath ADU / APEX HOMES USA, INC
- Description:
- 797 sq. ft. Detached, 2 STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- APEX HOMES USA, INC
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
799 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU / Orange Engineering
- Description:
- 799 sq. ft. Detached, 1STY, 2 bedroom 2 bath ADU
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- Orange Engineering
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
991 sq. ft. Detached, 1STY, 3 bedroom 2 bath ADU / APEX HOMES USA, INC
- Description:
- 991 sq. ft. Detached, 1STY, 3 bedroom 2 bath ADU
- Bedrooms:
- 3
- Bathrooms:
- 2
- Designer:
- APEX HOMES USA, INC
- Status:
- No status label on the agency page
The agency page says: “To use preapproved plans with same day approval, the project must meet all of the following criteria: Lot must be zoned residential and have an existing single-family home or duplex. Lot must NOT be located in a geohazard zone, landslide zone, flood zone or Wildland-Urban Interface (WUI) area”
Listed on the agency page when A-du checked it on November 3, 2026.
Getting a plan permitted
A pre-approved plan still needs a building permit for your lot. For free plans published by a California city or county, you can request an optional flat-fee service, Permitting by Chris Koss, AIA. Chris Koss, AIA, a California-licensed architect who owns A-du, provides this permitting service personally under a separate written agreement with you (the Permitting Services Agreement). It is not performed by A-du, and A-du takes no part of his fee. You can always take a free plan straight to your building department instead. Open any plan on A-du Build to see what applies to it.
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