Basement Finishing in Marlborough, CT | Lagace Construction

Basement Finishing in Marlborough, CT | Lagace Construction

Looking for a basement finishing contractor in Marlborough, Connecticut? Lagace Construction finishes basements throughout Marlborough and Hartford County — family rooms, home offices, legal bedrooms, bathrooms, in-law suites, and full ADU conversions. We’re a licensed, insured crew based in Andover, CT, finishing basements across eastern Connecticut since 2000.

Marlborough homeowners use their basements for everything from home gyms to income-generating rental units. The town’s quiet residential character makes it attractive for multi-generational living setups.

Basement Finishing Services in Marlborough, CT

  • Full Basement Finishing — Framing, insulation, drywall, electrical, lighting, flooring, trim — turnkey
  • Basement Family Rooms — Open-concept finished space with proper egress, natural light, and LVP flooring
  • Basement Home Offices — Dedicated office space with proper lighting, electrical circuits, and soundproofing
  • Basement Bedrooms — Legal egress window installation, proper ceiling height, closet construction
  • Basement Bathrooms — Full bathroom rough-in and finish with plumbing ejector pump where needed
  • In-Law Suite Conversions — Full basement ADU: bedroom, bath, kitchenette, separate entrance
  • Home Gym Buildouts — Rubber flooring, mirror walls, dedicated HVAC, heavy-duty electrical
  • Basement Bar & Entertainment Rooms — Bar rough-in, entertainment wall framing, specialty lighting
  • Waterproofing Coordination — We work with your waterproofing contractor before finishing begins

Why Marlborough Homeowners Choose Lagace Construction

  • CT Licensed & Insured — NHC #NHC-0016939, Electrical #E1-00191661
  • Skilled Local Crew handles framing, insulation, electrical, drywall, and finish work
  • We pull all permits and pass all town inspections — including egress and electrical
  • Written, line-item estimates — you know every cost before we start
  • 26+ years finishing basements across eastern CT — Est. 2000
  • 4.9 stars on Google across 40+ reviews

Basement Finishing: What to Expect

Step 1: Assess Before You Build

Before we put up a single piece of framing, we walk the basement carefully. We’re looking for water stains, efflorescence, active seepage, and ceiling height throughout. If your basement has any water history, that gets addressed first — always. Finishing over a wet basement is money thrown away.

Step 2: Design the Layout

We work with you to plan the space: where the partition walls go, where the egress window needs to be for any bedrooms, where the bathroom rough-in goes, how the electrical panel load looks for new circuits. This planning phase determines whether your finished basement passes inspection the first time.

Step 3: Permits

We pull all required permits from Marlborough’s building department — building, electrical, and plumbing as applicable. We submit the application, handle any back-and-forth with the inspector, and schedule all required inspections. You don’t deal with the building department at all.

Step 4: Framing, Rough-In, Inspections

Metal or wood framing for partition walls, ceiling framing if needed, electrical rough-in, plumbing rough-in for any bathrooms. Rough inspections happen before insulation and drywall go in.

Step 5: Insulation, Drywall, Finish

Closed-cell or fiberglass insulation on foundation walls, drywall hung and finished, LVP or tile flooring, trim, doors, bathroom tile and fixtures, lighting, and final electrical. Final inspection. Walk-through with you.

Frequently Asked Questions — Basement Finishing in Marlborough, CT

How much does it cost to finish a basement in Marlborough?

Basement finishing in Marlborough typically runs $25,000–$45,000 for a standard open family room or home office buildout. A full in-law suite or ADU with bedroom, bathroom, and kitchenette runs $50,000–$80,000+ depending on square footage and scope. The biggest cost factors are plumbing (adding a bathroom), egress windows for bedrooms, and finish level. We provide a free written estimate with line-item pricing so you know exactly what you’re spending.

Do I need a permit to finish a basement in Marlborough?

Yes — any work involving new framing, electrical, or plumbing requires a permit. Legal bedrooms require egress window review. We handle the entire process with Marlborough’s building department, including all inspections.

Can we add a legal bedroom in the basement?

Yes — with a proper egress window that meets IRC code: minimum 5.7 square feet net clear opening, at least 24 inches tall and 20 inches wide, maximum 44-inch sill height from the floor. We install code-compliant egress windows as part of the project. Without proper egress, a basement bedroom cannot legally be used as sleeping space and cannot be called a bedroom in a listing or appraisal.

Should I waterproof before finishing?

Absolutely yes, if there’s any water history. We can coordinate the sequence — waterproofing contractor finishes, foundation dries out, we confirm no active moisture, then we frame. Do not skip this step. We’ve seen too many homeowners inherit ruined finished basements because they skipped it.

Can the basement become an in-law suite or ADU?

Yes — a basement can become a fully functional in-law suite or ADU with bedroom, full bathroom, kitchenette, and separate entrance. This typically requires a separate exterior egress point, kitchen rough-in plumbing, and dedicated electrical circuits, but it’s one of the best-ROI projects a homeowner can do in Connecticut’s current rental market. We build these regularly.

Serving Marlborough and Nearby Towns

Our basement finishing crews work throughout Hartford County, including Colchester and Hebron. Call Scott at (860) 933-2700 to schedule a free on-site estimate.

Related Services in Marlborough, CT

Get a Free Basement Finishing Estimate in Marlborough

Call (860) 933-2700 or request a free estimate online. We’ll come to your home in Marlborough, walk the basement, talk through the scope and layout, and deliver a written estimate — typically within 5 business days.

Lagace Construction LLC
CT Licensed & Insured | Est. 2000 | Serving Marlborough, CT and Hartford County
(860) 933-2700 | lagaceconstruction.com