Home Additions in Westwood, MA

Westwood, MA at a glance

County

Norfolk County, Massachusetts · 27 places we serve there

From our base

About 23 miles east

Building permits

Westwood's building department

Contractor rules

MA Home Improvement Contractor registration (M.G.L. c.142A)

Nearest documented addition project

Front Porch Addition in Needham, MA

5 mi north of Westwood

Our documented addition and other work, by distance:

• Needham, MA: porch addition 5 mi north
• Framingham, MA: client review of our kitchen remodel 11 mi northwest
• Mansfield, MA: kitchen remodel 12 mi south
• Marlborough, MA: client review of our first-floor remodel 19 mi northwest
• Westborough, MA: client review of our new siding and windows 20 mi west
• Hudson, MA: client review of our bathroom remodel 21 mi northwest
• Northborough, MA: client review of our deck and small addition 23 mi west
• Lynnfield, MA: addition and exterior remodel 24 mi north
• Lynnfield, MA: addition framing video 24 mi north
• Shrewsbury, MA: client review of our kitchen and bathroom remodel 26 mi west
• Salem, NH: pool deck 40 mi north

Permits and rules in Westwood, MA

An addition needs a building permit from Westwood's building department and must meet local zoning rules such as setbacks. On septic, an added bedroom also needs Board of Health review under Title 5. Since February 2, 2025, one accessory dwelling unit, up to 900 square feet or half the main house if smaller, is allowed by right in single-family zones.

What's included

• Room & second-story additions
• In-law suites (ADUs)
• Sunrooms & porches
• Designer & engineer coordination

Costs and timelines: our home additions guide

How Much Does a Home Addition Cost in Massachusetts?

Distances: straight line, GeoNames data (CC BY 4.0). Updated October 8, 2026.