“Marcos installed new siding on my house. Their work is excellent. They work long hard hours. They were very respectful of my time and property. I highly recommend them.”

Expert General Contractor in Williamstown, Massachusetts
Williamstown sits 105 miles from our shop in Charlton, which is close enough that we see the same patterns in its housing stock again and again. Housing here runs to gilded age mansions and ski-area chalets, much of it 60-150+ years old. What makes it harder here is longer winters and a shorter installation season than the eastern half of the state.
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 General Contractor Services in Williamstown, MA
Williamstown sits 105 miles from our shop in Charlton, which is close enough that we see the same patterns in its housing stock again and again. Housing here runs to gilded age mansions and ski-area chalets, much of it 60-150+ years old. What makes it harder here is longer winters and a shorter installation season than the eastern half of the state.
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 General Contractor Services in Williamstown, MA
Concretely, on a Williamstown project that means an agreed rate for hidden damage written into the contract before we start; siding, windows and doors sequenced so each is flashed into the next correctly; permits filed and inspections scheduled by us, in the right order against the material lead times. Materials are rated for the New England climate zone, and we account for wind funnelled along ridgelines, which is hard on soffit and fascia. None of that is exotic. It is manufacturer specification, followed properly, which is a lower bar than the industry's reputation suggests and still the thing that decides how the wall looks in year twelve.
What We Offer
Why Williamstown Trusts Maia Construction
From the Charlton shop, Williamstown is a planned trip. We have jobs behind us in North Williamstown, East 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. We carry MA HIC #204634 and full insurance, and our Google rating is 5.0 across 19 reviews. Ask for the addresses of recent work near Williamstown — we will give you them.
Common General Contractor Challenges in Williamstown
Our General Contractor Solutions for Williamstown Homes
Williamstown Neighborhoods We Serve
We provide general contractor 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 General Contractor Process in Williamstown
Full exterior walkthrough
One walkthrough covering siding, openings and trim, because splitting them is where flashing details get lost.
One written contract
A single scope, a single price, and an agreed rate for whatever the walls are hiding.
Permits and sequencing
Permits filed and inspection slots booked before the crew is scheduled.
Staged execution
Openings, then envelope, then trim — each flashed into the next in the correct order.
Inspections
We meet the inspector at each stage; you do not need to be there.
Handover and warranty
You get one document, one number to call, and no argument about which trade owns a problem.
Cost Range
$18,000–$60,000 for a combined exterior package
Timeline
three to four weeks end to end, including inspection slots
Warranty
material coverage from each manufacturer and one 5-year guarantee across the entire project
5.0★
Google Rating
500+
Projects Done
105mi
From Williamstown
FREE
Estimates
General Contractor Transformations
See the quality of our general contractor 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.
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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.
“Marcos and his crew do top quality work! Will use them for any and all future siding projects. They are on time, great…”
“Excellent and professional work by Marcos and crew.”
What Our Customers Say
Real verified reviews from Massachusetts homeowners
General Contractor FAQs — Williamstown, MA
Common questions from Williamstown homeowners about general contractor
How long will exterior contracting take on my Williamstown home?
Plan on three to four weeks end to end, including inspection slots. Berkshire County weather does move schedules — wind funnelled along ridgelines, which is hard on soffit and fascia is the usual reason — so we build a weather margin into the date we give you rather than promising one we cannot hold.
What happens if you find rot once you have started?
It gets photographed and shown to you the same day. Because the repair rate is already agreed, finding rot changes the invoice by a known amount rather than an argued one.
What usually goes wrong with exterior work on homes in Williamstown?
The three we see most often here: exterior scope that grows once the walls are open, with no agreed rate for the extra; two warranties that each point at the other when something leaks; and water damage that spans siding, trim and window openings and cannot sensibly be split up. Locally, mountain-altitude weather severity comes up repeatedly on gilded age mansions.
What parts of Williamstown do you cover?
All of it, including South Williamstown, West Williamstown, Williamstown Center and the rest of ZIP 01267. We also work throughout Berkshire County.
Do you pull the permits, or do I?
We do. We file with the Williamstown building department, schedule the inspections and meet the inspector on site. As a Massachusetts Home Improvement Contractor (HIC #204634) that is our responsibility, not yours.
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.
Other Services in Williamstown
General Contractor Near Williamstown
Service Area: Williamstown, MA
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