“Marcos and his team replaced all 38 windows on my house in 2023. Marcos was communicative, transparent and very easy…”

Expert Doors in Williamstown, Massachusetts
We have worked on enough Williamstown exteriors to know what tends to be waiting behind the old material. Between gilded age mansions and ski-area chalets, most of what we open up here is 60-150+ years old. Add deep snowpack sitting against the lower courses of a wall for months, and the details that matter become obvious.
Why Williamstown Homeowners Choose Us
10+ Years of Excellence
Over a decade transforming Massachusetts homes. 500+ projects completed with expert precision and attention to detail.
MA Licensed (HIC #204634)
Fully licensed, bonded, and insured. Your investment is protected from start to finish with our comprehensive coverage.
5.0 Star Google Rating
Consistently rated 5 stars across 19 verified reviews. Our customers' satisfaction speaks louder than any advertisement.
Transparent, Fair Pricing
No surprises, no hidden fees. Get detailed written quotes upfront — we honor our prices and never upsell.
Premium Materials Only
We partner with top brands: James Hardie, CertainTeed, Andersen, Therma-Tru. 25-50 year manufacturer warranties included.
Local & Responsive
Charlton-based family business. We answer calls personally, respond same-day, and treat your home like our own.
Expert Doors Services in Williamstown, MA
We have worked on enough Williamstown exteriors to know what tends to be waiting behind the old material. Between gilded age mansions and ski-area chalets, most of what we open up here is 60-150+ years old. Add deep snowpack sitting against the lower courses of a wall for months, and the details that matter become obvious.
We have been working across Berkshire County since 2015, and the pattern is consistent: the jobs that come back are the ones where somebody rushed the parts nobody sees. Mountain-altitude weather severity is common enough in Williamstown that we price for it rather than acting surprised. We do not subcontract. That is the whole reason we can hold a start date and the reason the standard does not drop between the first elevation and the last.
Comprehensive Doors Services in Williamstown, MA
Concretely, on a Williamstown project that means rebuilding the opening square before the new unit goes in, rather than shimming around the problem; a properly flashed sill pan under the threshold, which is what stops the rot coming back; multi-point locking hardware on taller units, so the slab stays sealed along its full height. Materials are rated for the New England climate zone, and we account for deep snowpack sitting against the lower courses of a wall for months. It is all standard practice. The difference is that it gets done on every elevation, including the one facing the neighbour's fence that nobody inspects.
What We Offer
Why Williamstown Trusts Maia Construction
Williamstown is 105 miles out for us, which is inside the radius where we can get back quickly. We have worked in Williamstown Center, South Williamstown, West Williamstown. That distance is mostly about the boring things: being there for the inspection, and coming back out under warranty without it being an expedition. MA HIC #204634, fully insured, 5.0 stars from 19 Google reviews. If you want to see the work, several of the jobs in our portfolio are within a short drive of Williamstown.
Common Doors Challenges in Williamstown
Our Doors Solutions for Williamstown Homes
Williamstown Neighborhoods We Serve
We provide doors services to every neighborhood in Williamstown, Berkshire County, including ZIP code 01267:
Williamstown Housing Types We Work On
Our team has extensive experience with the housing stock found throughout Williamstown, with homes averaging 60-150+ years old:
Our Doors Process in Williamstown
Assess the opening
We look at where the draft actually is. Often the slab is fine and the opening is not.
Select the unit
Sidelights, transoms, decorative glass and lock type, with samples on site.
Order to the real opening
Units are ordered to the real opening, not the nominal one.
Remove and repair
Anything rotten in the sill or jamb is cut out and replaced before the new unit is offered up.
Set, flash and seal
Sill pan, shims at the hinge points, and flashing lapped over the housewrap.
Hardware, adjustment and handover
We set the sweep against your actual floor, cycle the lock, and leave you the keys and the warranty document.
Cost Range
$1,800–$5,500 installed, depending on the unit and the opening
Timeline
a single day for most entry doors
Warranty
a limited lifetime manufacturer warranty on the slab and 5 years on our labour
5.0★
Google Rating
500+
Projects Done
105mi
From Williamstown
FREE
Estimates
Doors Transformations
See the quality of our doors work in Berkshire County


Whole-House Siding Replacement
Atkinson, NH • Siding
Rear elevation — the orange cedar gable and two mismatched greys replaced with one vinyl exterior.
See the full project →Recent Projects
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Watch our team install doors across Massachusetts

Complete Home Renovation
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Exterior Transformation
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What Our Customers Say
5.0 across 19 Google reviews — from homeowners near Williamstown and across Massachusetts.
“I would not hesitate to and in fact, wholeheartedly recommend, Marcos and MAIA as a contractor at your home. Marcos and…”
“Marcos and his crew did an amazing job on our home. We had vinyl siding put on along with new construction windows installed. We could not be happier and have already recommended them to others.”
What Our Customers Say
Real verified reviews from Massachusetts homeowners
Doors FAQs — Williamstown, MA
Common questions from Williamstown homeowners about doors
Do you pull the permits, or do I?
We handle it. Filing with Williamstown, booking the inspection slots and being there when the inspector arrives are all ours under HIC #204634. You should not be chasing paperwork for work you are paying for.
Do you use subcontractors?
No. The crew on your Williamstown home is our own. It is the main reason we can hold a schedule and the main reason the same people who started your job are the ones who finish it.
Can you match existing work on part of the house?
Sometimes. On a gilded age mansions we can often match a single elevation closely enough that it reads as original. Where the existing material has faded past matching, we will say so rather than sell you a repair you will be unhappy with.
How do you handle the site during the job?
We protect the planting, keep the debris contained, and sweep for nails daily. You will still know there is a crew here, but you will be able to park and walk the garden.
What does door installation cost in Williamstown?
Our Williamstown projects generally land at $1,800–$5,500 installed, depending on the unit and the opening. The spread comes down to size, material and what we find once the old work comes off — which is why our written quote includes an agreed rate for hidden damage rather than a guess. Estimates are free and we do not price on the doorstep.
What parts of Williamstown do you cover?
All of it, including East Williamstown, Williamstown Center, West Williamstown and the rest of ZIP 01267. We also work throughout Berkshire County.
Other Services in Williamstown
Service Area: Williamstown, MA
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