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What Are You Allowed to Build at 66 Sullivan St, Boston, MA, 02129?
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 Allowed
This property meets the requirements for an Internal ADU of up to 900 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
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 645 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
BOSTON
Parcel ID
0200865000
Property Type
Two Family
Zone
Art62_RH-1500
Year Built
1900
Lot Size
790 sq ft
Gross Building Area
531 sq ft
Gross Floor Area
936 sq ft
Living Area
936 sq ft
Basement Area
0 sq ft
Impervious Surface
531 sq ft
67.2%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 66 Sullivan St, Boston, MA, 02129?
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 Allowed
This property meets the requirements for an Internal ADU of up to 900 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
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 645 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
BOSTON
Parcel ID
0200865000
Property Type
Two Family
Zone
Art62_RH-1500
Year Built
1900
Lot Size
790 sq ft
Gross Building Area
531 sq ft
Gross Floor Area
936 sq ft
Living Area
936 sq ft
Basement Area
0 sq ft
Impervious Surface
531 sq ft
67.2%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.