Looking for demolition contractors in Saint-Laurent? DemoPrep handles demolition, renovation, and landscaping across the borough — the post-war bungalows and duplexes, the heritage homes of Vieux-Saint-Laurent, and the newer condos and developments. Saint-Laurent is our home base, so we’re often just minutes from your project. RBQ-licensed (#5826-5448-01) and fully bilingual, we run your whole project under one roof. Call 514-613-8344 for a free quote.
Planning a Project in Saint-Laurent?
Don’t juggle three different companies. We handle the demolition, the renovation, and the landscaping under one roof — and we partner cleanly with your general contractor when a larger build calls for it.
Serving Every Part of Saint-Laurent
Saint-Laurent is one of the island’s largest and most varied boroughs, and we know it well — it’s where we’re based. The work changes from one sector to the next.
- Vieux-Saint-Laurent: the historic core near the old village — heritage homes that call for careful, selective work.
- Norgate & post-war streets: bungalows and duplexes on established lots — interior gut-jobs, additions, and modernization.
- Bois-Franc & newer developments: modern homes and condos — interior reconfiguration and finishing.
- Multi-unit & mixed areas: duplexes and walk-ups — unit-by-unit renovation with care for shared walls.
Phase 1: Demolition That Respects Your Property
From a post-war bungalow to an attached duplex, our crews handle full interior gut-jobs and selective demolition with careful dust and noise control — plus garage, shed, deck, and pool removal — and party-wall care where homes are attached. Being based in Saint-Laurent, we can get to your project quickly.
- Interior Demolition: safe removal of walls, flooring, and cabinetry, including load-bearing and party-wall assessments.
- Structure Removal: garage, shed, deck, pool, and rear-extension demolition.
- Concrete Removal: driveway, walkway, and basement-slab tear-outs.
We handle proper disposal of all materials — wood, concrete, metal — at authorized Montréal recycling facilities. See our full demolition services →
Phase 2: Renovations That Fit How You Live
Saint-Laurent renovations range from opening up a post-war bungalow to modernizing a duplex or finishing a basement — updating kitchens and bathrooms and reworking dated layouts for the way you live now.
- Kitchen Remodels: opening and updating older or builder-grade kitchens.
- Bathroom Makeovers: updated fixtures and efficient layouts.
- Basement Finishing: home offices, in-law spaces, and family rooms.
Explore our renovation services →
Phase 3: Outdoor Spaces for Saint-Laurent Lots
Saint-Laurent lots range from compact post-war yards to larger newer-development properties. We build outdoor spaces for the climate, with proper grading and drainage to protect foundations through freeze-thaw winters.
- Grading & Drainage: keeping water away from foundations.
- Hardscaping: paver patios, stone paths, and concrete steps.
- Privacy & Structures: cedar fences, decks, and green screens.
Why Choose DemoPrep, Demolition Contractors Saint-Laurent
Saint-Laurent is our home base, so we know its housing first-hand — the post-war bungalows and duplexes, the heritage core, the newer developments. We work within the City of Montréal’s borough permit process and handle the asbestos that comes with the borough’s older buildings.
- RBQ licensed (#5826-5448-01) and fully insured
- Bilingual crews (English + French)
- Free, no-pressure quotes
- Clean, on-time job sites that respect your neighbours
Permits in Saint-Laurent
Saint-Laurent is a borough of the City of Montréal, so demolition and structural renovation permits go through the city. Older areas like Vieux-Saint-Laurent can face additional review, and in pre-1980 buildings asbestos is common and has to be handled properly. We manage the paperwork and the safety side so your project stays compliant. You can start with the City of Montréal’s guide to getting a demolition permit.
Frequently Asked Questions
Do I need a permit to demolish part of my Saint-Laurent home?
In most cases, yes. Interior demolition that affects structure, and any exterior demolition, typically requires a permit through the City of Montréal’s Saint-Laurent borough. We handle the application as part of the job so you’re not navigating it alone.
Can you renovate one unit of a duplex without disturbing the other?
Yes — it’s a lot of what we do in Saint-Laurent. We assess shared walls, contain dust, and control noise so work on one unit doesn’t make the rest of the building unlivable for your tenants or family.
My Saint-Laurent home was built before 1980 — should I worry about asbestos?
It’s worth checking. Asbestos was used in pre-1980 homes in insulation, flooring, and drywall compound. DemoPrep is certified and trained for all levels of asbestos removal, from minor non-friable work to high-risk friable abatement. We test before any demolition, and when removal is needed our crews work inside HEPA-filtered (99.97%) containment using MSA Advantage 3200 full-face respirators with P100 Flexi-Filters, following CNESST requirements. It’s not something to disturb without knowing.
Do you handle demolition, renovation, and landscaping together?
Yes. That’s the point of working with us — one team for the demo, the rebuild, and the outdoor work, instead of coordinating three separate contractors yourself.
Get Your Free Estimate in Saint-Laurent
Whether you’re starting with demolition, planning a renovation, or rethinking your outdoor space, DemoPrep is ready to help. RBQ #5826-5448-01.