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What Are You Allowed to Build at 45 Spruce St, Millbrae, CA, 94030?

Backyard Cottage

(Detached ADU)

Probably Allowed

This property meets the requirements for a Detached ADU of up to 1,000 sq ft allowed By Right, or possibly more by Special Permit.

In Home Apartment

(Conversion or Addition)

Probably Allowed

This property meets the requirements for an Internal ADU of up to 1,000 sq ft allowed By Right, or possibly more by Special Permit.

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

The existing home is allowed as a legally nonconforming structure. However, the lot does not meet current zoning requirements for new Single-Family construction. A variance or other zoning relief may be requested.

Multifamily

Home Addition

Probably Allowed

We estimate you can expand this property by up to 1,187 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

021302190

Property Type

Single Family

Zone

R-2

Year Built

1959

Lot Size

2,496 sq ft

Gross Building Area

1,180 sq ft

Gross Floor Area

1,010 sq ft

Estimated

Living Area

840 sq ft

Basement Area

0 sq ft

Impervious Surface

1,180 sq ft

Estimated

47.3%of lot coverage

ADU rules for Millbrae, CA

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