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What Are You Allowed to Build at 21 Spruce St, Millbrae, CA, 94030?

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

Might be Allowed

This property may meet the zoning requirements to build a swimming pool. Some factors may affect feasibility. 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

Multi Family

Home Addition

Probably Allowed

We estimate you can expand this property by up to 1,814 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

MILLBRAE

Parcel ID

021302140

Property Type

Mobile Home

Zone

R-2

Year Built

1947

Lot Size

3,756 sq ft

Gross Building Area

960 sq ft

Gross Floor Area

1,492 sq ft

Estimated

Living Area

1,492 sq ft

Basement Area

0 sq ft

Impervious Surface

1,492 sq ft

Estimated

39.7%of lot coverage

ADU rules for Millbrae, CA

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