City of Monterey Park pre-approved ADU plans
The pre-approved ADU plans City of Monterey Park publishes, copied as published, with a link to the official page and the date A-du last checked it.
Official page: https://www.montereypark.ca.gov/1651/Pre-Approved-ADU-Plans (A-du last checked it October 12, 2026).
A-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.
The plans
Plan #1
- Description:
- Standard 800 SF ADU 2 Bed/2 Bath Option A
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- Michael Zhang of ALiGCUS Construction
- Status:
- No status label on the agency page
Listed on the agency page when A-du checked it on October 12, 2026.
Plan #2
- Description:
- Standard 800 SF ADU 2 Bed/2 Bath Option B
- Bedrooms:
- 2
- Bathrooms:
- 2
- Designer:
- Michael Zhang of ALiGCUS Construction
- Status:
- No status label on the agency page
Listed on the agency page when A-du checked it on October 12, 2026.
Plan #3
- Description:
- Standard 1000 SF ADU 3 Bed/2 Bath Option A
- Bedrooms:
- 3
- Bathrooms:
- 2
- Designer:
- Michael Zhang of ALiGCUS Construction
- Status:
- No status label on the agency page
Listed on the agency page when A-du checked it on October 12, 2026.
Plan #4
- Description:
- Standard 1000 SF ADU 3 Bed/2 Bath Option B
- Bedrooms:
- 3
- Bathrooms:
- 2
- Designer:
- Michael Zhang of ALiGCUS Construction
- Status:
- No status label on the agency page
Listed on the agency page when A-du checked it on October 12, 2026.
Plan #5
- Description:
- Standard 1200 SF ADU 3 Bed/2 Bath Option A
- Bedrooms:
- 3
- Bathrooms:
- 2
- Designer:
- Michael Zhang of ALiGCUS Construction
- Status:
- No status label on the agency page
Page text says "As of June 2026, four ADU plan sets have successfully been approved" but lists 6 plans.
Plan #6
- Description:
- Standard 1200 SF ADU 3 Bed/2 Bath Option B
- Bedrooms:
- 3
- Bathrooms:
- 2
- Designer:
- Michael Zhang of ALiGCUS Construction
- Status:
- No status label on the agency page
Page text says "As of June 2026, four ADU plan sets have successfully been approved" but lists 6 plans.
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, A-du offers an optional flat-fee permitting service. It is performed by Chris Koss, AIA (California license C-39677), who owns A-du, so A-du has a financial interest in it. 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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