About 3 mi from our Waltham shop
Basement finishing in Newton, MA
Basement finishing in Newton adds living space without touching the city's FAR limit, since space inside your existing envelope doesn't count.
Newton's FAR page says it directly: you can finish any space within your existing building envelope without regard to FAR. That makes the basement the easiest place to add a family room, office or guest suite on a lot that is already at its limit.
A finished basement can also become an accessory apartment under Newton's ADU ordinance, by right up to 1,000 square feet or half the house. A Newton customer of ours wrote to thank us for their basement remodel, and the same planning for light, egress and moisture goes into every one.
Newton rules that apply
What Newton requires for basement finishing.
- 1
Floor area ratio limit
Newton caps a house's gross floor area as a ratio of lot size, with the limit set by zoning district and lot size. Space finished inside the existing building envelope does not count against FAR; the city's FAR calculator gives the figure for a given lot.
- 2
Specialized energy code
Newton adopted the Specialized Stretch Code on March 6, 2023, and every complete building permit application received after January 1, 2024 is subject to it.
- 3
Newton ADU ordinance
Any single- or two-family home in Newton can add one accessory dwelling unit, allowed by right up to 1,000 square feet or half the main house's floor area, whichever is smaller. A detached ADU of 1.5 stories and 22 feet or less must sit at least 5 feet from side and rear lines; ADUs cannot be short-term rentals.
Source: City of Newton Planning: Accessory Dwelling Units (ADU)
Our basement finishing work.
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Photos from our jobs around Greater Boston.
“My wife and I would like to thank the people at HouseCraft for the superb work your company performed on our recent basement remodeling project. The finished basement looks far better than we anticipated when we first started to think about the project. Their craftsmanship and hard work adds a special touch to the finished project.”
Mike Moshes · Newton, MA
Questions
Basement finishing in Newton, answered.
Does finishing my basement count against Newton's FAR?
No. The city says you can finish any space within your existing building envelope without regard to FAR, which is why basements and attics are popular in Newton.
Can my Newton basement be a rental apartment?
It can, as an ADU of up to 1,000 square feet or half the house by right, as long as it is rented for more than 30 days at a time; Newton bans short-term rental of ADUs.
Basement finishing near Newton.
Where this information comes from
- City of Newton: Residential Floor Area Ratio (FAR)
- City of Newton ISD: Energy Code / Fossil Fuel-Free
- City of Newton Planning: Accessory Dwelling Units (ADU)
- City of Newton: Historic Preservation (review FAQs)
- City of Newton Urban Forestry: Tree Preservation Ordinance
- Newton Ordinance C-8 (2022): Stormwater Management and Erosion Control
- City of Newton Conservation Office: Floodplains and Stormwater
- City of Newton DPW: Updating and Repairing Water and Sewer Services
- City of Newton: NewGov permitting guide
- Historic Newton: Villages
Rules change. These are summaries of Newton's and Massachusetts' published rules as of our last check, not legal advice; your project's permits are confirmed with the town when we file them.
Free estimate
Planning basement finishing in Newton?
We'll come out, measure, listen, and send a written estimate. The visit is free and there's no pressure to sign.
Call 617-934-1875