Demolition Services in Mississauga — Tear-Downs, Garages, Decks

OCM Excavation & Construction handles residential demolition across Mississauga — full house tear-downs in Port Credit and Mineola, detached garages in Lorne Park, old decks and pools in Clarkson, and interior strip-outs in Erin Mills. We pull the City of Mississauga demolition permit, coordinate asbestos and designated substance testing on pre-1990 homes, protect trees that fall under the City’s 15cm DBH by-law, and haul every load off-site. Call 416-317-3090 for a walk-through and a fixed written quote.

Demolition work we do across Mississauga

Mississauga lots in older neighbourhoods are turning over fast. A 1950s bungalow in Mineola gets bought, scraped, and replaced with a 5,000 sq ft custom build inside 14 months. We get called for the scrape. Typical jobs:

• Full house tear-downs — single-family homes from 1,200 to 4,000 sq ft, foundation included. Common in Port Credit, Mineola, Lorne Park, and the older parts of Clarkson where lots run 60 to 100 feet wide.
• Detached garages — single, double, and oversized. Slab broken out, footings removed, site graded flat. 1 to 2 days on most lots.
• Decks, pergolas, and gazebos — wood, composite, and pressure-treated structures stripped to grade, footings pulled, sod-ready finish.
• In-ground and above-ground pools — concrete, vinyl, and fibreglass. Full removal or partial fill, your call. We coordinate with the pool enclosure by-law if a new fence is going up.
• Interior gut and selective demo — kitchens, bathrooms, basements stripped to studs and joists for renovations across Erin Mills and Streetsville.
• Concrete and hardscape removal — driveways, walkways, retaining walls, patios.

How OCM runs a Mississauga demolition

Every Mississauga tear-down follows the same sequence so nothing gets missed and nothing gets red-tagged:

1. Site walk and scope. We measure the structure, identify trees inside the City of Mississauga’s 15cm DBH protection threshold, flag the utility drops, and map the haul route. The free quote lands in your inbox within a few business days.
2. Designated substance survey. Any house built before 1990 in Mississauga gets sampled for asbestos, lead paint, and other designated substances by a third-party consultant. This is a Ministry of Labour requirement, not optional.
3. Permits and disconnects. We pull the City of Mississauga demolition permit, file the tree protection plan if needed, and book the gas, hydro, water, and sewer disconnects with Enbridge, Alectra, and the Region of Peel.
4. Soft strip. Fixtures, appliances, drywall, and any flagged hazardous material come out first under controlled conditions. Salvage gets pulled where it makes sense.
5. Mechanical demo. Excavator with a hydraulic thumb takes the structure down. Wood, metal, brick, and concrete are sorted on site for the Region of Peel’s diversion targets.
6. Foundation and slab. Walls and footings come out, the hole gets backfilled with clean engineered fill, compacted, and graded for the next trade.
7. Sign-off. Final City inspection, photo record, and a clean lot handed back to you or your builder.

Typical cost drivers in Mississauga

We quote every demo fixed, but the number depends on a handful of variables. Knowing them up front saves surprises:

• Square footage and number of storeys — a 1,500 sq ft bungalow in Clarkson is a different job than a 3,500 sq ft two-storey in Lorne Park.
• Asbestos and designated substances — pre-1990 Port Credit and Mineola homes almost always carry some asbestos in pipe wrap, vermiculite insulation, or floor tile. Abatement is billed separately and can add real money.
• Foundation type — poured concrete is faster than stone-and-rubble. Older Mississauga homes can have either.
• Tree protection — protected trees on or near the lot mean fencing, an arborist report, and tighter equipment swings. Mississauga’s tree permit currently runs $343.52 plus $124.14 per additional tree.
• Site access — narrow Port Credit lots and tight Mineola laneways slow equipment and push hauling cost up.
• Conservation overlay — properties near the Credit River fall under Credit Valley Conservation; east-end lots near Etobicoke Creek fall under TRCA. Both can add permit time.

Why Mississauga homeowners and builders call OCM

We are an excavation contractor first, which matters in demolition. The crew, the machines, and the hauling capacity that take down the house are the same ones that dig the new basement the following week. That means one mobilization, one phone call, and one company on the hook for the schedule. We carry standard contractor insurance and coverage and we are happy to send certificates before you sign.

You can see the rest of our coverage on the service areas page, and if a basement dig is part of the same project, the Mississauga excavation page covers what comes next.

Frequently Asked Questions

Do I need a permit to demolish a house in Mississauga?

Yes. The City of Mississauga requires a demolition permit for any full structure tear-down, and most accessory buildings like detached garages. OCM pulls the permit as part of the job, files the disconnect confirmations from Enbridge, Alectra, and the Region of Peel, and books the City inspection at the end. Interior-only strip-outs sometimes don’t require a permit — we confirm before quoting.

What about asbestos in an older Port Credit or Mineola home?

Any Mississauga home built before 1990 needs a designated substance survey before demolition under Ontario Ministry of Labour rules. Asbestos shows up in pipe wrap, vermiculite attic insulation, vinyl floor tile, and drywall compound. We coordinate the third-party survey, and any required abatement is done by a licensed abatement contractor before the structure comes down.

How long does a residential demolition take in Mississauga?

A detached garage or large deck is usually 1 to 2 days on site. A full house tear-down including foundation removal, backfill, and grading typically runs 1 to 2 weeks on the ground, but the full timeline including permits, disconnects, and the asbestos survey can stretch to 6 to 10 weeks from contract to clean lot. We give you a realistic schedule at quote.

What about trees on my Mississauga lot?

Mississauga’s Private Tree Protection By-law currently protects trees 15cm DBH and up on private property. If a protected tree has to come down to clear access, you need a tree permit — base fee is around $343.52 plus $124.14 per additional tree, and you may need to plant replacements. We install protective fencing around trees that are staying, per the City’s tree protection zone rules.

Do you remove pools and concrete too?

Yes. We do in-ground pool removals (full dig-out or partial fill), above-ground pool teardowns, concrete driveway and walkway breakouts, old retaining walls, and patio demo. Pool removal in Mississauga sometimes needs an engineered fill report if you’re rebuilding on the footprint — we flag that up front.

Will my lot be ready for the new build after you leave?

Yes. The standard OCM demolition scope leaves the lot backfilled with clean engineered fill, compacted, graded, and ready for the next trade — usually the excavation crew for the new foundation. If OCM is doing both phases, the transition is seamless. We hand off photos, the demo permit closure, and the City inspection sign-off.

Get a free demolition quote in Mississauga

If you’ve bought a tear-down in Port Credit, you’re scraping a garage in Lorne Park, or you need an old pool out of the back yard in Clarkson, call OCM Excavation & Construction at 416-317-3090 or request a free written quote through our free quote form. We’ll walk the site, talk through permits and asbestos, and give you a fixed number you can build a budget around.

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