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What Are You Allowed to Build at 20 Crown Pt, San Rafael, CA, 94901?
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
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
The property may meet the zoning requirements to build a Home Addition up to 4,116 sq ft of zoning-counted floor area. Additional factors may affect feasibility.
Property facts
Zoning Jurisdiction
SAN RAFAEL
Parcel ID
01411103
Property Type
Single Family
Zone
R20
Year Built
1950
Lot Size
16,160 sq ft
Gross Building Area
2,613 sq ft
Gross Floor Area
2,098 sq ft
Living Area
1,584 sq ft
Basement Area
0 sq ft
Impervious Surface
2,613 sq ft
16.2%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 20 Crown Pt, San Rafael, CA, 94901?
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
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
The property may meet the zoning requirements to build a Home Addition up to 4,116 sq ft of zoning-counted floor area. Additional factors may affect feasibility.
Property facts
Zoning Jurisdiction
SAN RAFAEL
Parcel ID
01411103
Property Type
Single Family
Zone
R20
Year Built
1950
Lot Size
16,160 sq ft
Gross Building Area
2,613 sq ft
Gross Floor Area
2,098 sq ft
Living Area
1,584 sq ft
Basement Area
0 sq ft
Impervious Surface
2,613 sq ft
16.2%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.