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What Are You Allowed to Build at 39 Madrone Rd, Atherton, CA, 94027?

Backyard Cottage

(Detached ADU)

Probably Allowed

This property meets the requirements for a Detached ADU of up to 1,200 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 1,200 sq ft allowed By Right, or possibly more by Special Permit.

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 Allowed

This property likely meets the zoning requirements to build a Single-Family home up to 7,506 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multifamily

Home Addition

Probably Allowed

We estimate you can expand this property by up to 3,907 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

ATHERTON

Parcel ID

061221020

Property Type

Single Family

Zone

R-1A

Year Built

1984

Lot Size

41,597 sq ft

Gross Building Area

4,418 sq ft

Gross Floor Area

3,599 sq ft

Estimated

Living Area

2,780 sq ft

Basement Area

0 sq ft

Impervious Surface

4,418 sq ft

Estimated

10.6%of lot coverage

ADU rules for Atherton, CA

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