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What Are You Allowed to Build at 20 N Union St, Somerville, MA, 02145?

Backyard Cottage

(Detached ADU)

Probably Allowed

This property meets the requirements for a Detached ADU of up to 900 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 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 Allowed

This property likely meets the zoning requirements to build a Single-Family home up to 78,582 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multifamily

Home Addition

Probably Allowed

We estimate you can expand this property by up to 74,567 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

SOMERVILLE

Parcel ID

101A4

Property Type

Two Family

Zone

ASMD

Year Built

1920

Lot Size

7,858 sq ft

Gross Building Area

3,108 sq ft

Gross Floor Area

4,015 sq ft

Estimated

Living Area

4,015 sq ft

Basement Area

0 sq ft

Impervious Surface

4,015 sq ft

Estimated

51.1%of lot coverage

ADU rules for Somerville, MA

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