Built on craftsmanship, run on trust
We're a veteran-owned Connecticut design-build company with a simple promise: do the work correctly, communicate honestly, and treat your property like it's our own.
A builder homeowners can count on
Thomas Construction LLC was founded on a frustration many Connecticut homeowners know well: too many contractors overpromise, communicate poorly, and disappear when the work gets hard. Owner Zach Thomas Caldwell set out to build the opposite — a company defined by discipline, accountability, and craftsmanship.
Over 15+ years in the trade, we've grown into a full-service design-build contractor specializing in detached garages, car-collector garages, barns, post & beam structures, ADUs, additions, and outdoor living spaces. We've completed hundreds of projects across the state, and our reputation is built one finished building — and one satisfied homeowner — at a time.
The name on the truck is a name we stand behind. That's what "Trust in Thomas" means.
Discipline you can build on
As a veteran-owned company, we bring the standards of military service to the job site: show up, follow through, pay attention to detail, and own the outcome. Those habits translate directly into better-run projects — clear plans, accountable schedules, and a finished product done to standard, not just "done."
When you hire Thomas Construction, you're hiring a team that takes commitment seriously.
Our values
Trust
We earn it with every interaction — and we never take it for granted.
Honest communication
Clear, upfront answers about scope, cost, and timeline — before the work and throughout it.
Reliability
We do what we say we'll do, when we say we'll do it. Dependability is the whole job.
Quality
Premium materials and proper detailing that hold up to Connecticut conditions for decades.
Credentials that back the craftsmanship
- 15+ years of experience building custom structures across Connecticut
- Licensed Connecticut contractor — NHC.0017215
- Fully insured for your protection and ours
- 2-year craftsmanship warranty on every project
- Hundreds of completed projects and a reputation we protect
- Single point of contact from design through completion
Who you'll work with
Real people who answer the phone and stand behind the work.
Zach Thomas Caldwell
Owner
Zach leads every project and sets the standard for craftsmanship and communication. A veteran and lifelong builder, he's your point of contact for design, scope, and execution.
Yann Luc Sylvester
Head of Sales & Marketing
Yann helps homeowners get started — answering questions, scoping projects, and making sure your first experience with us is as clear and easy as the build itself.
Let's talk about your project
Tell us what you're planning. We'll give you honest, experienced input and a clear path forward.