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What Are You Allowed to Build at 18 Cedar 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 1,250 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

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

Property facts

Streetview picture of 18 Cedar St, Boston, MA, 02129

Zoning Jurisdiction

BOSTON

Parcel ID

0203131000

Property Type

Three Family

Zone

Art62_RH-2000

Year Built

1850

Lot Size

1,223 sq ft

Gross Building Area

795 sq ft

Gross Floor Area

3,313 sq ft

Estimated

Living Area

3,313 sq ft

Basement Area

0 sq ft

Impervious Surface

795 sq ft

Estimated
65.0%of lot coverage

ADU rules for Boston, MA

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 18 Cedar 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 1,250 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

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

Property facts

Streetview picture of 18 Cedar St, Boston, MA, 02129

Zoning Jurisdiction

BOSTON

Parcel ID

0203131000

Property Type

Three Family

Zone

Art62_RH-2000

Year Built

1850

Lot Size

1,223 sq ft

Gross Building Area

795 sq ft

Gross Floor Area

3,313 sq ft

Estimated

Living Area

3,313 sq ft

Basement Area

0 sq ft

Impervious Surface

795 sq ft

Estimated
65.0%of lot coverage

ADU rules for Boston, MA

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

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