
Addition in Lexington, MA
New square footage that looks like it was always there
(508) 598-8704Free, no-obligation estimate on Lexington properties · Fully insured
Free Addition Estimate
Tell us about your Lexington property and we will come look at it.
Addition for Lexington Homes
Families in Lexington usually reach the same point: the house is right in every way except size. Before anything gets designed we look at what Lexington zoning actually permits on your lot - setbacks, coverage, and grade - because that determines the addition far more than the wish list does.
An addition is the most demanding thing a residential builder does: new foundation, new framing tied into old, roof lines that have to resolve honestly, and mechanicals extended from systems sized for a smaller house. We do all of it.
What Lexington Properties Actually Need
- The housing stock here
- Antique houses sit beside recent teardown rebuilds, so a single street can need historic-appropriate repair on one lot and modern structural work on the next.
- Working on the site
- Active construction across neighbourhoods means street access and staging are negotiated with more than one crew.
- Permits and inspections
- Historic districts govern the older sections, and the town reviews scale and siting on rebuilds closely.
What Goes Wrong in Greater Boston
Leaks where old meets new
The junction between existing and added structure is the single most common failure point, and the hardest one to fix afterward.
Zoning discovered too late
Setbacks, lot coverage, and septic capacity kill more additions than budget does - and usually after money has been spent on design.
The bolted-on look
Mismatched rooflines, siding that doesn’t align, and window proportions that give it away instantly from the curb.
Addition Services We Provide in Lexington
- Full framing, roofing, siding, and finish
- Foundation, excavation, and slab work
- Second-story additions
- Single-room and multi-room additions
- Garage and mudroom additions
- Primary suite and in-law additions
How Your Lexington Project Runs
- 01
Free Estimate
Call us and we come out to your property, walk the job with you, and put real numbers on paper - no cost, no obligation.
- 02
Scope & Timeline
We agree on the exact scope, materials, and a clear start-to-finish timeline before a single tool comes off the truck.
- 03
We Build It
Our own carpenters do the work - framing, roofing, windows, decks. One crew, one point of contact, no subcontractor roulette.
- 04
Final Walkthrough
We walk the finished job with you and don't call it done until you say it is. Site left clean.
If you are weighing an addition in Lexington against moving, we will walk your property and tell you what can actually be built. Free estimate - (508) 598-8704.
Questions
Addition in Lexington - FAQ
Yes - Lexington is part of our regular service area. We're based at 190 Bolton St, Unit 11, Marlborough, MA 01752, and addition is one of the 8 services we handle in-house.

- (508) 598-8704
- 190 Bolton St, Unit 11, Marlborough, MA 01752
- @ofirconstruction
- Serving all of Massachusetts
Free Estimate
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