Call today for your free consultation
Built in New England. Backed by our own crews.
Four divisions.
One general contractor.
Most contractors your size subcontract everything but their own trade. We built the opposite. Every division below is staffed by MJS employees, scheduled by MJS, and answerable to the same project manager.
Masonry
Foundation tradeBrick, block, stone, and concrete — new construction and restoration. We repoint and rebuild chimneys, repair and replace brick foundations, install lintels and steel, and match historic brick and mortar on buildings dating back to the 1800s. Waterproofing, retaining walls, concrete flatwork, tile, and masonry accent walls round out the division.
Ask us about: historic brick matching · chimney rebuilds · foundation repair · repointing · waterproofing
View Masonry Service →Carpentry
Structural & finishStructural and finish carpentry, from sill and joist replacement to framing, decks, porches, siding, trim, and interior buildouts. On restoration work our carpentry and masonry crews sequence together — so when a rotted sill is exposed behind failing brick, both trades are already on site.
Ask us about: structural repairs · sill & joist replacement · framing · decking & porches · siding · finish carpentry
View Carpentry Service →Excavation
Site prepExcavation, grading, drainage, foundation digs, utility trenching, and site prep. Having this in-house means no waiting on an outside excavator to open a hole before the masonry crew can start — a common two-week delay we simply don't have.
Ask us about: foundation excavation · drainage & French drains · grading · utility trenching · site prep
View Excavation Service →Site Work
Site prepMost contractors our size subcontract everything. At MJS, we are built to do the opposite. Every division is staffed by MJS employees, scheduled directly by MJS, and accountable to our team of dedicated Project Managers. Keeping the work in-house gives us greater control over scheduling, quality, coordination, and accountability from start to finish.
Ask us about: in-house crews · coordinated scheduling · multi-trade projects · direct project management · quality control
View Site Work Service →HVAC
New divisionHeating, cooling, and ventilation — installation, replacement, repair, and maintenance for homes and commercial buildings. Our specialty is retrofitting modern HVAC into older New England buildings without tearing them apart, which is exactly the problem our masonry and carpentry crews solve every day.
Ask us about: ductless mini-splits · high-velocity systems for older homes · furnace & boiler replacement · AC installation · commercial rooftop units · service & maintenance
View HVAC Service →One contractor. Five trades.
Call (781) 245-0008 for a free consultationOur Values

SAFETY
Safety is the most important of our core values. It is our first priority.

COMMUNITY
Involvement in and support of the community are at the heart of us.

SUSTAINABILITY
MJS commitment to green building and sustainability is long-standing.

INTEGRITY
We have operated with an unwavering commitment honesty and integrity.
Leading the way in building and civil construction

560
Project Completed

Years in Business
We believe in the power of great ideas.
We are proactive in finding brilliant solutions for our clients that best achieve their goals and plans.
We recognize the importance of innovation and fostering a culture of continuous improvement. The process of building a workforce for the future requires tremendous adaptability and vision.


