Can I stay in the house during the work?

Almost always. We isolate the work zone with temporary partitions, control dust, and keep plumbing and heating running in the occupied portion.

How long does a Montréal permit take?

8 to 14 weeks depending on borough and whether an SPAB is required. We file a complete package — that's what avoids back-and-forth.

Does it add resale value?

A well-done addition typically recoups 70–95% of its cost at resale in Montréal, more in in-demand neighborhoods. The real gain is quality of life.

Home addition

Home additions in Montréal

A well-done addition doesn't announce itself. The roofline continues, the brick meets, the floor extends. We build so the house looks like it was always this way.

Adding to a Montréal home is an exercise in constraints: setbacks, height limits, lot coverage, view servitudes. We know the zoning by borough where we work (Villeray, Rosemont, Ahuntsic, Verdun, Le Plateau) — that's what separates a permit issued in eight weeks from a stillborn project.

Tying into the existing house is the hardest part. We open the envelope in phases, protect the still-inhabited side, and reconnect structure, plumbing, electrical and ventilation without dead zones. Cladding (brick, siding, roofing) is chosen to disappear into the existing house, not compete with it.

Most common types: rear addition (kitchen + family room), second-storey add-up (bedrooms and bath), converted garage as living space, four-season sunroom.

What's included

Scope of work

Structural review and engineer's drawings
Addition permit and SPAB submission when required
New foundation tied into the existing one
Framing, envelope, roofing, cladding
Plumbing, electrical, HRV tie-ins
Full interior finish
Protection of the occupied portion during work

FAQ

Straight answers

Can I stay in the house during the work?: Almost always. We isolate the work zone with temporary partitions, control dust, and keep plumbing and heating running in the occupied portion.
How long does a Montréal permit take?: 8 to 14 weeks depending on borough and whether an SPAB is required. We file a complete package — that's what avoids back-and-forth.
Does it add resale value?: A well-done addition typically recoups 70–95% of its cost at resale in Montréal, more in in-demand neighborhoods. The real gain is quality of life.

Keep exploring

Guide

Cost of building in Quebec

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