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What Are You Allowed to Build at 310 Walnut Av, Boston, MA, 02121?

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 Not Allowed
This lot does not meet the requirements for an Internal ADU. A variance may be requested through your local zoning authority

Swimming Pool

Might be Allowed
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
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 up to 56,366 sq ft of zoning-counted floor area. Additional factors may affect feasibility.

Property facts

Streetview picture of 310 Walnut Av, Boston, MA, 02121

Zoning Jurisdiction

BOSTON

Parcel ID

1202985000

Property Type

SCHOOL

Zone

Art50_WALNUT AVENUE CF

Year Built

1899

Lot Size

73,795 sq ft

Gross Building Area

17,430 sq ft

Gross Floor Area

17,430 sq ft

Estimated

Living Area

17,430 sq ft

Basement Area

0 sq ft

Impervious Surface

17,430 sq ft

Estimated
23.6%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 310 Walnut Av, Boston, MA, 02121?

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 Not Allowed
This lot does not meet the requirements for an Internal ADU. A variance may be requested through your local zoning authority

Swimming Pool

Might be Allowed
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
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 up to 56,366 sq ft of zoning-counted floor area. Additional factors may affect feasibility.

Property facts

Streetview picture of 310 Walnut Av, Boston, MA, 02121

Zoning Jurisdiction

BOSTON

Parcel ID

1202985000

Property Type

SCHOOL

Zone

Art50_WALNUT AVENUE CF

Year Built

1899

Lot Size

73,795 sq ft

Gross Building Area

17,430 sq ft

Gross Floor Area

17,430 sq ft

Estimated

Living Area

17,430 sq ft

Basement Area

0 sq ft

Impervious Surface

17,430 sq ft

Estimated
23.6%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.