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What Are You Allowed to Build at 686 Webster St, Needham, MA, 02492?

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 16,622 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 13,660 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 686 Webster St, Needham, MA, 02492

Zoning Jurisdiction

NEEDHAM

Parcel ID

1990490000300000

Property Type

Single Family

Zone

SRB

Year Built

1860

Lot Size

46,173 sq ft

Gross Building Area

3,514 sq ft

Gross Floor Area

2,962 sq ft

Estimated

Living Area

2,410 sq ft

Basement Area

0 sq ft

Impervious Surface

3,514 sq ft

Estimated
7.6%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 686 Webster St, Needham, MA, 02492?

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 16,622 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 13,660 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 686 Webster St, Needham, MA, 02492

Zoning Jurisdiction

NEEDHAM

Parcel ID

1990490000300000

Property Type

Single Family

Zone

SRB

Year Built

1860

Lot Size

46,173 sq ft

Gross Building Area

3,514 sq ft

Gross Floor Area

2,962 sq ft

Estimated

Living Area

2,410 sq ft

Basement Area

0 sq ft

Impervious Surface

3,514 sq ft

Estimated
7.6%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.