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What Are You Allowed to Build at 13 Union St, Needham, MA, 02494?

Backyard Cottage

(Detached ADU)

Might be Allowed
This property may qualify for a Detached ADU of up to 823 sq ft allowed By Right, or possibly more by Special Permit, but there are some special considerations.

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 Allowed
This property likely meets the zoning requirements to build a swimming pool. 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

Probably Allowed
We estimate you can expand this property under current zoning rules. We weren't able to identify a specific size limit, but an addition may be possible horizontally, vertically, or both, depending on design and permitting.

Property facts

Streetview picture of 13 Union St, Needham, MA, 02494

Zoning Jurisdiction

NEEDHAM

Parcel ID

1990990004400130

Property Type

Residential

Zone

GR

Year Built

1864

Lot Size

4,947 sq ft

Gross Building Area

1,646 sq ft

Gross Floor Area

1,646 sq ft

Estimated

Living Area

1,646 sq ft

Basement Area

0 sq ft

Impervious Surface

1,646 sq ft

Estimated
33.3%of lot coverage

ADU rules for Needham, 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 13 Union St, Needham, MA, 02494?

Backyard Cottage

(Detached ADU)

Might be Allowed
This property may qualify for a Detached ADU of up to 823 sq ft allowed By Right, or possibly more by Special Permit, but there are some special considerations.

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 Allowed
This property likely meets the zoning requirements to build a swimming pool. 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

Probably Allowed
We estimate you can expand this property under current zoning rules. We weren't able to identify a specific size limit, but an addition may be possible horizontally, vertically, or both, depending on design and permitting.

Property facts

Streetview picture of 13 Union St, Needham, MA, 02494

Zoning Jurisdiction

NEEDHAM

Parcel ID

1990990004400130

Property Type

Residential

Zone

GR

Year Built

1864

Lot Size

4,947 sq ft

Gross Building Area

1,646 sq ft

Gross Floor Area

1,646 sq ft

Estimated

Living Area

1,646 sq ft

Basement Area

0 sq ft

Impervious Surface

1,646 sq ft

Estimated
33.3%of lot coverage

ADU rules for Needham, MA

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

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