Demolition Contractor in Ontario
Demolition covers everything from tearing down a garden shed to bringing down a commercial building or gutting a house to the studs before a rebuild. Contractors in this category handle interior strip-outs, full structural teardowns, concrete and foundation removal, and the permitting, hazardous material checks, and debris hauling that go with each job. Ontario has 124 businesses listed in this category, ranging from small crews that handle sheds, decks, and interior demo to larger operators equipped for commercial and industrial teardowns.
What demolition work actually involves
Most jobs fall into a few buckets: interior demolition (stripping walls, flooring, and fixtures ahead of a renovation), structural demolition (removing all or part of a building), and site clearing (concrete pads, pools, garages, outbuildings). Before any of it starts, a contractor should pull the right municipal permits, arrange utility disconnects (hydro, gas, water), and check for asbestos or other hazardous materials if the structure is older, since Ontario regulations require testing and abatement before demolition can proceed on many pre-1990 buildings. After the work, debris gets sorted and hauled to disposal or recycling facilities, and the site is left graded or cleaned to the agreed condition.
What to look for before you hire
Ask for proof of WSIB coverage and liability insurance, and confirm the company pulls permits in your municipality rather than leaving that step to you. Get a written scope that spells out what's included: asbestos testing, utility disconnection, debris removal, and site cleanup, since these are common places where quotes diverge. For anything beyond a small interior strip-out, ask how they handle dust and vibration control near neighbouring structures, and whether they carry equipment suited to the job (excavators, skid steers, or hand demolition crews) rather than subcontracting the whole thing out.
How our scoring works
We rank contractors in this category using verified licensing and insurance signals, review volume and rating trends, and responsiveness, so you're comparing businesses on more than star count alone. See the full breakdown in our methodology, or jump straight to the ranked list of Ontario's best demolition contractors to compare top options directly.
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All demolition contractor, ranked by score and relevance
200 businesses. The order weighs each business's overall score by how much of its reviewed work is demolition contractor, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.
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Common questions about demolition contractor
- How much does demolition cost in Ontario?
- It depends heavily on scope. Interior strip-outs (removing drywall, flooring, cabinetry) tend to price by the square foot, while full structural teardowns of a house are usually quoted as a lump sum that factors in size, materials, access, and disposal volume. Asbestos abatement, if needed, is a separate line item and can add significantly to the total. Get at least two or three written quotes since pricing varies widely by contractor and by what's included.
- Do I need a permit to demolish a structure in Ontario?
- In most Ontario municipalities, yes, a demolition permit is required for anything beyond very small accessory structures like a shed. Larger residential and commercial demolitions typically also require utility disconnection confirmations and, for older buildings, an asbestos survey before the permit is issued. A contractor experienced in your municipality should handle this process rather than leaving it to you.
- How long does a typical demolition job take?
- An interior strip-out or small outbuilding removal can often be done in a day or two. A full house teardown usually takes several days to a couple of weeks once permits are in hand, depending on size, whether hazardous materials need abatement first, and how debris is hauled off site. Larger commercial demolitions can run weeks to months.
- How do I judge the quality of a demolition contractor?
- Look at how clearly they scope the job in writing, whether they proactively raise asbestos testing and permits rather than waiting to be asked, and whether they carry their own equipment for the type of job you need. Insurance and WSIB coverage are non-negotiable. Review history and how a company responds to past complaints are also useful signals, which is part of what we factor into our category rankings.