Construction 3 Lacs inc.

Service · Vaudreuil-Soulanges and the West Island

Basement finishing

Square footage you already pay for and do not use. We insulate it properly, deal with moisture and hand over rooms that live like the rest of the house.

Or call: 514-444-2391

What is included

Everything below is in the written quote, line by line. Nothing is a surprise on the invoice.

  • Moisture and drain check before the walls are closed
  • Foundation wall insulation and vapour barrier to code
  • Partitions, bedrooms with code-compliant egress windows
  • Full bathroom, with an ejector pump if the drain is too high
  • Vinyl plank flooring, suspended or drywall ceiling, recessed lighting
  • Electrical by a master electrician, panel upgraded if needed

From our job sites

Real projects, photographed by our crew in Vaudreuil-Soulanges and the West Island.

See all our work

How it goes

From the first call to the handover

  1. Visit and diagnosis

    We look at cracks, water marks, headroom and where the drain sits before drawing anything.

  2. Plan and permit

    A simple partition plan for the municipal permit; bedrooms need an egress window.

  3. Construction

    Insulation, framing, plumbing, electrical, drywall, ceiling, flooring, doors and finishing.

  4. Final walkthrough

    Walk through the basement with you, including the access left to valves and the panel.

What it costs

A 700 sq ft basement lands in these ranges depending on the tier, taxes included. An extra bathroom is added on top.

Standard

Quality materials, common finishes

$59,396to$85,472

700 sq ft, taxes included

Premium

High-end finishes, quartz, glass

$77,215to$111,114

700 sq ft, taxes included

Luxury

Custom work, premium materials

$100,973to$145,303

700 sq ft, taxes included

References based on Québec market prices (about $90/sq ft in the standard tier). The firm price is confirmed in writing after a free visit.

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Questions homeowners ask

Before starting a basement finishing project with us.

My basement has had water before. Can it still be finished?

Yes, as long as the cause is fixed first. Depending on the case: French drain, sump pump, crack repair or exterior grading. We never close a wall over a water problem.

Can I add a bedroom in the basement?

Yes, with a code-compliant egress window and enough headroom. If the current window is too small, we enlarge it with a window well.

Which flooring for a basement?

Vinyl plank is our recommendation: stable, moisture-resistant and warm underfoot with an underlay. Tile works for the bathroom.

Where we do this work

Based in Vaudreuil-Dorion. Each town has its own page with the local rules and the type of houses we see there.

Your town is not listed? We also work across the West Island (Pointe-Claire, Kirkland, Dollard-des-Ormeaux, Pierrefonds, Beaconsfield, Sainte-Anne-de-Bellevue), in Châteauguay, Vaudreuil-sur-le-Lac and everywhere in Vaudreuil-Soulanges. The visit is still free.

Tell us about your project

Call, write or send the form to discuss your project.

  1. 1. We call you backTo understand the project and set the visit.
  2. 2. Free visitWe measure and check site conditions.
  3. 3. Written quoteDetailed, line by line, no obligation.
How would you prefer to be contacted?

Free visit and quoteRBQ licence 5788-4918-01

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