SERVING WESTBOROUGH, MASSACHUSETTS
Home additions, ADUs, kitchens, baths, and custom stonework for Westborough homeowners. In a town built around wetlands and headwaters, knowing what triggers Conservation review before you draw plans is worth something.
Westborough was incorporated in 1717 as the hundredth town in Massachusetts, with twenty-seven families living in what had been the west borough of Marlborough. In 1775 its own north borough split off to become Northborough. Today it is a town of roughly 21,500 on the eastern edge of Worcester County, with stately commercial blocks downtown and some genuinely handsome older houses along West Main Street.
The housing stock reflects three hundred years of that history all at once: eighteenth and nineteenth century homes near the center, nineteenth century industrial and mercantile buildings that have been repurposed, postwar development, and modern subdivision. Which era your house belongs to determines most of what a project here involves.
Andrew Mercurio is a fourth-generation builder who came up in masonry and grew ARM Construction into a full general contracting company. He holds Massachusetts Construction Supervisor License #CS-093044, issued in 2011, and the company holds Home Improvement Contractor Registration #153199. Both are active and verifiable through the Commonwealth.
Kitchen and bathroom remodels are the largest share of the work here, and they range widely depending on the age of the house, from straightforward updates in newer subdivisions to full gut renovations in the older homes near the center. Home additions and ADUs and in-law suites are common, helped considerably by the town being sewered.
We also build sunrooms and four season rooms, garage and basement conversions, home remodels, custom masonry and stonework, decks and patios, siding, and flooring. One company, one point of contact, from the first walkthrough to the final inspection.
This is the single most distinctive thing about building here, and it is the reason projects in Westborough have a step that projects in most towns do not.
Three river systems rise in this town. The Sudbury, the Assabet, and the Concord all have headwaters in Westborough, and the town holds Cedar Swamp, a wetland complex of several hundred acres, along with Lake Chauncy, Lake Hoccomocco, and a great deal of associated wet ground. The Nipmuc camped around those waters for thousands of years and the Paleo-Indian sites in Cedar Swamp are significant enough to have their own archaeological historic district.
For a homeowner, what matters is the buffer. Under the Massachusetts Wetlands Protection Act, work within 100 feet of a wetland resource area, or within 200 feet of a perennial stream, requires filing with the Conservation Commission. In a town this wet, that catches considerably more properties than in most of the county, and plenty of homeowners have no idea their back corner sits inside a buffer zone.
This is not a reason not to build. Additions, decks, patios, and pools get approved near wetlands regularly. It is a reason to identify it at the first site visit, because a Conservation filing adds weeks to a schedule and it is a great deal easier to design around a buffer than to redesign after a hearing. We look at where the water is before we look at where the addition goes.
Westborough is served by town water and sewer across most of its developed area, and its wastewater treatment plant also handles flow from neighboring communities, which tells you something about the capacity there.
That matters more than it sounds. In Princeton and Sterling, where there is no municipal sewer, the question that decides most addition and ADU projects is whether the septic system can carry another bedroom under Title 5. Exceeding that capacity turns a construction project into a septic upgrade plus a construction project.
On a sewered Westborough lot, that question does not exist. What replaces it here is wetlands proximity and, in the older parts of town, historic district review. Different constraints, but ones that are just as worth identifying at the start.
Westborough has several National Register districts, including the West Main Street Historic District and its later extensions, the Vintonville Historic District, the Parkman Parsonage District, and the Cedar Swamp Archaeological District, along with individually listed properties.
The distinction that matters is which kind of designation applies. National Register listing on its own generally does not restrict what a private owner can do to their own building. Local historic district designation does, and can govern exterior materials, window replacement, and colors. The two are easily confused, and only one affects your timeline. Worth confirming for your specific address before design work rather than after.
Beyond the districts, Westborough's older homes carry the usual list. Knob and tube wiring. Plaster over lath. Framing on irregular spacing. Cast iron waste lines. Little or no wall insulation, which makes a re-side a good moment to fix it. And because the older stock predates 1978, federal lead-safe work practices apply to most renovation on it, while old nine-inch vinyl flooring and its black mastic have to be presumed to contain asbestos until testing says otherwise.
Northborough borders Westborough to the north and was part of this town until 1775. Southborough sits to the east. We are based in Princeton, and we also work in Worcester, Shrewsbury, Grafton, Holden, Sterling, West Boylston, Boylston, and Leominster.
What Our Customers Say
I can't say enough good things! I needed a small finish job done at the last minute, and Andrew made it happen quickly and without any stress. The craftsmanship was perfect and everything looks amazing. I'm extremely happy and would recommend him to anyone!
Andrew and his team are detail-oriented. They are skilled and helped me understand the process of renovating my kitchen. Fantastic communication & high quality service! I am so lucky to have them and recommend them to anyone! When they built my deck, it was so fast & efficient! Call Andrew, you won't regret it
Andrew replaced a garden window in my kitchen, and a sliding door. He did a meticulous job, and went above and beyond to accommodate some special requests that I had. His attention to detail and willingness to do whatever it took to make me happy didn't go unnoticed. Will definitely use him each and every time!
Here is what Westborough homeowners ask us most. If your question is not here, call us at (774) 249-0221.
Because of where the town sits. Three river systems, the Sudbury, the Assabet, and the Concord, rise in Westborough, and the town contains Cedar Swamp, a wetland complex of several hundred acres, along with Lake Chauncy, Lake Hoccomocco, and a great deal of associated wet ground. Under the Massachusetts Wetlands Protection Act, work within 100 feet of a wetland resource area or within 200 feet of a perennial stream requires Conservation Commission review. In a town shaped by headwaters, that buffer catches more properties than it does almost anywhere else in the county. It is not a barrier. It is a timeline item, and it needs to be identified at the first site visit rather than at permitting.
In most cases yes. Since February 2, 2025, Massachusetts allows one accessory dwelling unit by right on lots in single-family zoning districts statewide, up to 900 square feet or half the gross floor area of the main house, whichever is smaller, with no special permit and no zoning hearing. Westborough is served by town water and sewer across most of its developed area, which removes the Title 5 septic capacity question that constrains ADU projects in the towns north and west of here. The two things worth checking early on a Westborough lot are wetlands proximity and whether the property sits in one of the town's historic districts.
It depends which kind. Westborough has several National Register districts, including the West Main Street Historic District and its extensions, the Vintonville Historic District, the Parkman Parsonage District, and the Cedar Swamp Archaeological District. National Register listing on its own generally does not restrict what a private owner does to their own building. Local historic district designation is a different thing and can govern exterior materials, windows, and colors. The two are easy to confuse and only one affects your timeline, so it is worth confirming which applies to your address before design work rather than after.
Yes for most projects. Any addition, structural change, or conversion of unfinished space into living space requires a building permit from the Town of Westborough, along with electrical, plumbing, and mechanical permits depending on scope. Given how much of the town falls near wetland resource areas, Conservation Commission review is a common additional step, and it takes time. ARM Construction handles the permitting, the Conservation filing where it applies, and the inspection schedule as part of the project.
ARM Construction & Management Inc
131 Houghton Road
Princeton, MA 01541
(774) 249-0221
Licensed and insured in Massachusetts. MA CSL #CS-093044 | MA HIC Reg. #153199
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