Photo: Back of the addition: taped sheathing with the new windows in place, Lynnfield, MA
Home Additions in Cambridge, MA
Waterfront Construction Inc, an owner-led general contractor, offers home additions in Cambridge, MA. Cambridge is in Middlesex County, about 28 miles east of our Northborough base. Our closest documented addition project is in Needham, MA, about 9 miles southwest.
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Cambridge, MA at a glance
- County
- Middlesex County, Massachusetts · 47 places we serve there
- From our base
- About 28 miles east
- Building permits
- Cambridge'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
9 mi southwest of Cambridge
Our documented addition and other work, by distance:
- Needham, MA: porch addition 9 mi southwest
- Lynnfield, MA: addition and exterior remodel 12 mi north
- Lynnfield, MA: addition framing video 12 mi north
- Framingham, MA: client review of our kitchen remodel 17 mi southwest
- Marlborough, MA: client review of our first-floor remodel 23 mi west
- Hudson, MA: client review of our bathroom remodel 24 mi west
- Mansfield, MA: kitchen remodel 24 mi south
- Westborough, MA: client review of our new siding and windows 27 mi west
- Northborough, MA: client review of our deck and small addition 28 mi west
- Salem, NH: pool deck 29 mi north
- Shrewsbury, MA: client review of our kitchen and bathroom remodel 31 mi west
Permits and rules in Cambridge, MA
An addition needs a building permit from Cambridge'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
Free estimate
Tell us about your project
Free and no-obligation. Prefer to talk? Call (508) 816-2726 (Mon–Sat, 7am–6pm).
- Itemized estimates
- 500+ projects completed
- Insured
Distances: straight line, GeoNames data (CC BY 4.0). Updated .