Basement renovation in Montreal
- RBQ licensed
- 35 years of experience
- Workshop in Dorval
- Same-day callback
Family room, office, additional bathroom or rental unit: we finish your basement with the insulation, plumbing and permits Montreal requires.
RBQ-licensed general contractor
Licensed and fully insured
35 years of experience
Renovation and cabinetry in Montreal for three decades
Own cabinetry workshop in Dorval
Your cabinets and millwork are built in-house
Same-day callback
Monday to Friday, 7 a.m. to 5 p.m.
Before and after: our real projects
Photos of jobs completed by our team in Montreal. Drag the slider to compare.
BeforeAfter
BeforeAfter
BeforeAfterA well-finished basement adds living space at a lower cost per square foot and, converted into a compliant unit, generates immediate rental income. It also demands rigour: humidity control, foundation-wall insulation, clear height, egress windows and plumbing that often has to be created.
We always start with a foundation and drain diagnosis, then design the layout in 3D. Built-in furniture (under-stair storage, wall unit, bar) is made in our workshop to use every inch.
What basement finishing includes
- Humidity, foundation and French-drain diagnosis
- 3D plans and permit application (including a unit if desired)
- Insulation, vapour barrier, partitions and soundproofed ceiling
- Plumbing, additional bathroom, electrical and recessed lighting
- Flooring, doors, finishing and paint
- Built-in furniture made in the workshop
Our method: a hassle-free renovation in 5 steps
- 01
Consultation and assessment
Home visit, laser measurements and a structural review (load-bearing walls, plumbing, electrical).
Week 1
- 02
3D plans and detailed quote
Photorealistic renderings so you can see the result, and a line-by-line quote with no surprises.
Weeks 2 to 3
- 03
Permits and regulations
We prepare the applications with your borough (transformation permit, PIIA) so the site is compliant.
Project dependent
- 04
Workshop fabrication
While plans are approved, your cabinets and millwork are built in Dorval by our cabinetmakers.
2 to 6 weeks
- 05
Construction, installation and handover
Site protection, clean demolition, certified trades, installation and final inspection.
3 to 8 weeks
Typical basement budgets in Montreal
| Project | Range | What moves the price |
|---|---|---|
| Complete basement finishing | $40,000 to $100,000 | Floor area, bathroom, kitchenette for a unit, humidity correction, windows |
Indicative range for the Montreal market, before taxes. Free detailed quote after the visit.
Frequently asked questions about basement renovation
Do I need a permit to finish a basement in Montreal?
Yes, finishing a basement requires a borough permit, and creating a unit also requires meeting zoning and safety rules (height, egress windows, exits). We prepare the file.
Can a basement become a rental unit?
In many boroughs, yes, if zoning allows it and clear-height, natural-light and exit requirements are met. We check feasibility before drawing the plans.
What if the basement is damp?
We start with the cause: French drain, cracks, grading or ventilation. Insulating a damp basement without fixing the source is the surest way to lose the investment.
Let's add value to your basement
Describe the use you have in mind. We call back the same day to schedule a free visit.
Prefer to talk to someone?
Call 514 279-2626Monday to Friday, 7 a.m. to 5 p.m.
