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What Are You Allowed to Build at 33210 Transit Ave, Union City, CA, 94587?
Backyard Cottage
(Detached ADU)
Probably Not Allowed
This lot does not meet the requirements for a Detached ADU. A variance may be requested through your local zoning authority
In Home Apartment
(Conversion or Addition)
Probably Not Allowed
This lot does not meet the requirements for an Internal ADU. A variance may be requested through your local zoning authority
Swimming Pool
Probably Allowed
This property likely meets the zoning requirements to build a swimming pool. Based on applicable zoning limits, the estimated buildable area for a pool. Final feasibility may depend on site-specific conditions and local interpretation.
Single Family
Probably Not Allowed
This lot does not meet the zoning requirements to build a Single-Family home. A variance may be requested through your local zoning authority
Multifamily
Home Addition
Probably Allowed
We estimate you can expand this property by up to 62,813 sq ft under current zoning rules. This may allow for a horizontal addition, a vertical addition, or both, depending on design and permitting.
Property facts
Zoning Jurisdiction
UNION CITY
Parcel ID
475111401
Property Type
Residential
Zone
ML
Year Built
1986
Lot Size
111,971 sq ft
Gross Building Area
49,539 sq ft
Gross Floor Area
49,159 sq ft
Living Area
48,779 sq ft
Basement Area
0 sq ft
Impervious Surface
48,779 sq ft
43.6%of lot coverage

Based on public data and AI. Check with a pro. Read More
© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.
What Are You Allowed to Build at 33210 Transit Ave, Union City, CA, 94587?
Backyard Cottage
(Detached ADU)
Probably Not Allowed
This lot does not meet the requirements for a Detached ADU. A variance may be requested through your local zoning authority
In Home Apartment
(Conversion or Addition)
Probably Not Allowed
This lot does not meet the requirements for an Internal ADU. A variance may be requested through your local zoning authority
Swimming Pool
Probably Allowed
This property likely meets the zoning requirements to build a swimming pool. Based on applicable zoning limits, the estimated buildable area for a pool. Final feasibility may depend on site-specific conditions and local interpretation.
Single Family
Probably Not Allowed
This lot does not meet the zoning requirements to build a Single-Family home. A variance may be requested through your local zoning authority
Multifamily
Home Addition
Probably Allowed
We estimate you can expand this property by up to 62,813 sq ft under current zoning rules. This may allow for a horizontal addition, a vertical addition, or both, depending on design and permitting.
Property facts
Zoning Jurisdiction
UNION CITY
Parcel ID
475111401
Property Type
Residential
Zone
ML
Year Built
1986
Lot Size
111,971 sq ft
Gross Building Area
49,539 sq ft
Gross Floor Area
49,159 sq ft
Living Area
48,779 sq ft
Basement Area
0 sq ft
Impervious Surface
48,779 sq ft
43.6%of lot coverage

Based on public data and AI. Check with a pro. Read More
© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.