Home Addition & Remodeling Contractor | Windham County, CT

Lagace Construction serves all of Windham County — Connecticut’s Quiet Corner — with home additions, remodeling, garage construction, and new home builds. From Woodstock in the north to Killingly in the south, and from Thompson near the Massachusetts border to Lebanon near Hartford County, our family-owned crew brings the same hands-on approach and clear pricing to every project.

Windham County’s rural character means many properties here have the space to expand in ways that denser suburbs can’t — larger lots, more flexible zoning, fewer neighbor conflicts. But older housing stock and sometimes-lengthy permit timelines require a contractor who knows the local process. We’ve been working in the Quiet Corner for over 25 years and have built relationships with building officials across the county.

Towns We Serve in Windham County, CT

• Ashford
• Brooklyn
• Canterbury
• Chaplin
• Eastford
• Hampton
• Killingly
• Lebanon
• Plainfield
• Pomfret
• Putnam
• Scotland
• Sterling
• Thompson
• Windham (Willimantic)
• Woodstock

Services We Offer Throughout Windham County

• Home Additions — Single-story rooms, second-floor additions, in-law suites, and ADU conversions
• Kitchen Remodeling — Full design-build kitchens with cabinetry, countertops, and layout changes
• Bathroom Remodeling — Master baths, family baths, full conversions, tile, and vanities
• Garage Construction — Detached and attached garages, 1–3 bay builds
• Basement Finishing & ADUs — Convert basement to living space or income-producing unit
• Decks, Roofing & Siding — Composite decks, full roof replacements, exterior siding
• New Home Construction — Custom ground-up builds, land prep through final walkthrough

Why Windham County Homeowners Choose Lagace Construction

We’re not a regional franchise or a subcontracting middleman — we’re a family-owned crew that shows up every day. Scott Lagace has been hands-on in the field for 25+ years, and every project gets the same attention whether it’s a $15,000 deck or a $300,000 addition.

• CT Licensed & Insured — NHC #NHC-0016939, Electrical #E1-00191661
• 4.9 stars on Google across 40+ reviews
• In-house crew — no rotating subs for core carpentry work
• Clear written estimates with line-item pricing
• We pull all permits and handle all town inspections

Frequently Asked Questions — Windham County, CT

Do you serve all towns in Windham County?

Yes — we serve all sixteen Windham County towns: Ashford, Brooklyn, Canterbury, Chaplin, Eastford, Hampton, Killingly, Lebanon, Plainfield, Pomfret, Putnam, Scotland, Sterling, Thompson, Windham (Willimantic), and Woodstock. The Quiet Corner is a regular part of our service area, and we’re familiar with the building departments across the county.

How much does a home addition cost in Windham County?

Home addition costs throughout Windham County typically range from $150 to $350 per square foot depending on scope, foundation type, and finish level. Single-story slab-on-grade additions run $180–$220/sq ft; second-floor additions average $200–$250/sq ft. We provide a detailed written estimate with line-item pricing for every project — no vague ballparks.

Do you know the local building departments in Windham County?

Absolutely. We’ve worked with building officials across Windham County over 25+ years. We pull all permits ourselves, submit all required documentation, and manage every inspection — so you don’t have to navigate town hall on your own.

How soon can you come out for an estimate?

For projects within Windham County, we can typically schedule an on-site estimate within a week of your first call. We’ll walk the scope with you, take measurements, and follow up with a written estimate within 5 business days. Call Scott directly at (860) 933-2700 to get on the calendar.

Get a Free Estimate in Windham County

Call Scott directly at (860) 933-2700 or submit a request online. We’ll come to your property anywhere in Windham County, walk the scope with you, and deliver a written estimate — usually within 5 business days.

Lagace Construction LLC
Based in Andover, CT | Serving All of Windham County
CT Licensed & Insured — NHC #NHC-0016939 | Electrical #E1-00191661
(860) 933-2700 | lagaceconstruction.com