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What Are You Allowed to Build at 911 Baileyana Rd, Hillsborough, CA, 94010?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 800 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

Probably Not Allowed
This property likely does not meet the zoning requirements for a swimming pool. A variance or other zoning relief may be required. Final feasibility may depend on site-specific conditions and local interpretation.

Single Family

Might be Allowed
This property may meet the zoning requirements to build a Single-Family home up to 3,179 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit. Additional factors may affect feasibility.

Multifamily

Home Addition

Might be Allowed
The property may meet the zoning requirements to build a Home Addition up to 800 sq ft of zoning-counted floor area. Additional factors may affect feasibility.

Property facts

Streetview picture of 911 Baileyana Rd, Hillsborough, CA, 94010

Zoning Jurisdiction

HILLSBOROUGH

Parcel ID

027321030

Property Type

Single Family

Zone

RD-1

Year Built

1950

Lot Size

12,717 sq ft

Gross Building Area

2,363 sq ft

Gross Floor Area

3,200 sq ft

Estimated

Living Area

3,200 sq ft

Basement Area

0 sq ft

Impervious Surface

2,363 sq ft

Estimated
18.6%of lot coverage

ADU rules for Hillsborough, CA

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 911 Baileyana Rd, Hillsborough, CA, 94010?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 800 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

Probably Not Allowed
This property likely does not meet the zoning requirements for a swimming pool. A variance or other zoning relief may be required. Final feasibility may depend on site-specific conditions and local interpretation.

Single Family

Might be Allowed
This property may meet the zoning requirements to build a Single-Family home up to 3,179 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit. Additional factors may affect feasibility.

Multifamily

Home Addition

Might be Allowed
The property may meet the zoning requirements to build a Home Addition up to 800 sq ft of zoning-counted floor area. Additional factors may affect feasibility.

Property facts

Streetview picture of 911 Baileyana Rd, Hillsborough, CA, 94010

Zoning Jurisdiction

HILLSBOROUGH

Parcel ID

027321030

Property Type

Single Family

Zone

RD-1

Year Built

1950

Lot Size

12,717 sq ft

Gross Building Area

2,363 sq ft

Gross Floor Area

3,200 sq ft

Estimated

Living Area

3,200 sq ft

Basement Area

0 sq ft

Impervious Surface

2,363 sq ft

Estimated
18.6%of lot coverage

ADU rules for Hillsborough, CA

Based on public data and AI. Check with a pro. Read More

© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.