About Us
Built on craftsmanship. Grown across New England.
Meet the Owners
The team behind J-One
Jack B. Clark
Charlestown, Rhode Island
Owner · Field Operations · Contractor
Jack leads J-One's field operations, running crews and dialing in the details on every job site from framing to final punch list.
Matthew P. MacKillop
Warwick, Rhode Island
Owner · Admin & Marketing · Contractor
Matthew keeps projects moving on the back end — estimates, scheduling, client communication — so the field team can focus on building.
Our Story
Structured management. Skilled tradesmen.
J-One Construction LLC is a Southern New England residential contractor delivering high-quality kitchens, bathrooms, flooring, and painting across Rhode Island, Massachusetts, and Connecticut.
Our approach is simple: pair disciplined project management with experienced in-house crews. That combination is why our timelines hold and our finishes hold up — job after job, referral after referral.
What We Stand For
Our values on every job site
Craftsmanship
Every cut, every seam. Details are the whole job.
Integrity
Honest pricing, honest timelines, honest updates.
Quality
Materials and methods that outlast the trend cycle.
Relationships
Most of our work comes from referrals — we protect that.
Let's build something together.
Free estimates across Rhode Island, Massachusetts, and Connecticut.
Get In Touch