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What Are You Allowed to Build at 353 Union St, Ashland, MA, 01721?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 502 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 502 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 Allowed
This property likely meets the zoning requirements to build a Single-Family home up to 4,500 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multi Family

Home Addition

Probably Allowed
We estimate you can expand this property by up to 4,500 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

Streetview picture of 353 Union St, Ashland, MA, 01721

Zoning Jurisdiction

ASHLAND

Parcel ID

0140200001600000

Property Type

Single Family

Zone

CN

Year Built

1945

Lot Size

9,147 sq ft

Gross Building Area

1,094 sq ft

Gross Floor Area

1,003 sq ft

Estimated

Living Area

912 sq ft

Basement Area

0 sq ft

Impervious Surface

1,094 sq ft

Estimated
12.0%of lot coverage

ADU rules for Ashland, 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 353 Union St, Ashland, MA, 01721?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 502 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 502 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 Allowed
This property likely meets the zoning requirements to build a Single-Family home up to 4,500 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multi Family

Home Addition

Probably Allowed
We estimate you can expand this property by up to 4,500 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

Streetview picture of 353 Union St, Ashland, MA, 01721

Zoning Jurisdiction

ASHLAND

Parcel ID

0140200001600000

Property Type

Single Family

Zone

CN

Year Built

1945

Lot Size

9,147 sq ft

Gross Building Area

1,094 sq ft

Gross Floor Area

1,003 sq ft

Estimated

Living Area

912 sq ft

Basement Area

0 sq ft

Impervious Surface

1,094 sq ft

Estimated
12.0%of lot coverage

ADU rules for Ashland, MA

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

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