How Much Does Interior Demolition Cost in Montreal?

It's the first question every homeowner asks before renovating: how much will the demolition cost? The honest answer is that there is no single price. The cost depends on the surface, the materials, site access and what is hiding behind the walls.

This article gives you realistic ballpark ranges for Montreal, explains what makes the bill vary and shows you how to get a fair price, with no bad surprises mid-project.

What determines the cost of an interior demolition?

No demolition project is identical to another. Five main factors explain why two kitchens of similar size can show very different prices.

• 1
  The surface and volume to demolish

  Most quotes are calculated per square foot. The larger the surface, the higher the total, but the cost per square foot tends to drop on bigger projects.

• 2
  The type of materials

  A drywall partition comes down quickly. Plaster on wood lath in older homes, brick or concrete take more time and equipment.

• 3
  Site access

  A third-floor condo without an elevator, a narrow staircase or distant parking lengthen debris removal time and raise the cost.

• 4
  The presence of hazardous materials

  Asbestos, lead or mould require certified intervention before demolition. This is the factor that makes a bill vary the most.

• 5
  Structural elements

  Touching a load-bearing wall requires validation and sometimes reinforcement. This work calls for expertise not every contractor has.

How much does interior demolition cost per square foot in Montreal?

In Quebec, a light residential interior demolition generally runs between 5 and 10$ per square foot, and a full gut between 10 and 15$ per square foot, based on the ranges published by quote platforms such as RenoQuotes (updated June 2026). Here is how these orders of magnitude compare.

One point stands out immediately: the presence of asbestos pushes a project into a whole different price category. We come back to it below, because it is precisely the cost most often forgotten in quick estimates.

The cost of debris removal

Debris removal is a real part of the bill, often underestimated. In Quebec, sorting centres charge disposal fees of about 95 to 140$ per tonne, and renting a 20 cubic yard container for a week generally runs between 450 and 700$ depending on the supplier and the type of materials.

A serious contractor includes sorting, transport and debris disposal in the quote, and provides tracking slips proving the materials were sent to certified centres. This traceability protects you, and it avoids surprise fees at the end of the job.

Costs to anticipate: asbestos, permits and structural elements

Three items often escape quick estimates. Knowing them in advance saves you from bad surprises.

The asbestos test

In a home built before 1990, an asbestos test is not an optional expense: it is a legal obligation before work that generates dust. Analysing one sample in an accredited laboratory generally costs between 99 and 199$, and a full test covering several samples can represent 400 to 1 500$ depending on their number.

Municipal permits

In Montreal, a demolition permit is required as soon as the work touches a load-bearing wall, changes the layout of the rooms or involves plumbing and electrical. Permit fees, payable to the City, vary by borough and type of work. They must appear clearly in your quote, with no hidden amount or added management fee.

Load-bearing walls and securing utilities

Demolishing a load-bearing wall requires structural validation and sometimes temporary reinforcement. Safely shutting off water, electricity and gas must be done by certified professionals. These steps add to the cost, but they protect your building and your safety.

Why renovation prices have gone up

If quotes seem higher than before, it's not your imagination. According to the APCHQ, residential renovation spending in Quebec jumped about 19% in the first half of 2025 compared to 2024. This sustained demand, combined with the rising cost of materials and labour, is reflected in the prices of every trade, demolition included.

How to get a fair price

A price given over the phone or on the back of a napkin is not a reliable price. Here is how to recognize a serious estimate and avoid fees that appear mid-job.

• Require an on-site visit. A serious price is not given without seeing the space.
• Ask for a written, detailed quote, line by line: labour, debris, permits, protection of adjacent areas.
• Check that asbestos management is planned if the building dates from before 1990.
• Confirm whether the price is firm or whether additional fees are possible, and in which cases.
• Compare on a fair basis: a lower price that leaves out debris or permits is not a bargain.