Why do two Toronto quotes for the same basement differ by thousands?

Because the word remediation covers different work at each price. Wright Restorations prices basic treatment of exposed drywall and framing at $3.50 to $5.00 per square foot, while Ultimate Mold Crew prices full-service work with containment, tear-out and HEPA air scrubbing at $10 to $30 and CPR24 Restoration reaches $41.80. Both are describing a basement. Only one is describing demolition, negative air and disposal.

Is there a published price list for restoration work in Toronto?

No single one exists. Most large GTA firms publish no prices at all and scope each loss individually for the insurer, so the ranges collected here come from the minority of contractors that publish CAD figures. Those pages publish typical ranges for a market, and this index holds no pricing for any of the 294 companies it lists.

Does the cheaper quote mean a worse company?

Not on the evidence available. Ontario has no licensing for mould remediation or water damage restoration, so nothing forces two firms to price the same protocol. A low rate can describe a genuinely smaller scope on unfinished block and framing. The check is what the rate includes, item by item, rather than the rate itself.

What should I ask to make two quotes comparable?

Ask each firm to state the affected square footage it measured, whether containment and negative air are inside the number, whether tear-out and disposal are included, whether clearance testing is quoted separately, and whether the moisture source repair sits in or out of scope. Get two or three quotes from IICRC-certified firms and compare them line by line, not by total.

Does the quoted rate include HST?

Usually not. Mould remediation and restoration are fully taxable services in Ontario and most GTA contractors quote before tax, so 13% HST gets added to the figure discussed on site. When comparing a contractor quote against an insurer scope, check which of the two is tax-inclusive before treating the difference as a discount.

Why two quotes for one basement differ so much

Two quotes for one basement usually price two different jobs. Wright Restorations prices basic treatment of exposed drywall and framing at $3.50 to $5.00 per square foot, and Ultimate Mold Crew prices full-service remediation with containment, tear-out and HEPA air scrubbing at $10 to $30. The gap is a difference in scope definitions.

Page last updated: September 9, 2026By The RestorationIndex Desk

Illustration generated for this article. It is not a photograph of a real job, no company listed on this site appears in it, and it carries no figure.

Key facts

01Wright Restorations prices basic treatment of exposed drywall and framing at $3.50 to $5.00 per square foot; CPR24 Restoration publishes $13.93 to $41.80 for full service.
02Mold Busters prices containment setup, meaning poly barriers, a zippered entry and negative air, at $300 to $2,500 per project, and disposal of contaminated materials at $100 to $700.
03Ontario has no provincial licensing for mould remediation or water damage restoration, so nothing obliges two firms to quote the same protocol.
04This index holds no pricing for any of its 294 companies, and the average rating across the 277 rated ones is 4.76, too tightly packed to separate one quoting philosophy from another.

What the word remediation covers at each end

At the low end, the work is treatment of surfaces that are already open. Wright Restorations prices that scope, basic treatment of unfinished drywall and framing across the GTA, at $3.50 to $5.00 per square foot, with $4.00 to $5.00 typical. Its mould removal guide puts standard remediation of exposed drywall and framing at $3.50 to $6.00 per square foot, cross-checked against CPR24 Restoration. Nothing is being sealed off, nothing is being demolished, and the crew is working in a space that already gives access.

At the high end, the same word describes a controlled demolition. Ultimate Mold Crew prices full-service remediation, meaning containment, tear-out, HEPA air scrubbing and cleanup, at $10 to $30 per square foot. HomeStars puts full-service work with containment, HEPA filtration and post-removal cleanup at $10 to $30 per square foot across Canada. CPR24 Restoration publishes $13.93 to $41.80 for full service in Toronto, and MoldTech published $28 to $40 back in September 2021, the oldest figure in this site's research and a legacy high-end number rather than a current quote.

The physical difference behind that spread is equipment and containment. Mold Busters prices containment setup, meaning poly barriers, a zippered entry and negative air pressure, at $300 to $2,500 per project. HEPA air scrubbers rent at $50 to $85 per day per unit in the GTA, with Drying Equipment in Concord at $84.99 a day and C&T Rentals at $50 a day. Mold Busters prices disposal of contaminated materials as construction waste at $100 to $700. A quote that includes those items cannot land where a quote that excludes them lands.

Flat side-by-side diagram, one half showing an open basement wall of bare studs being wiped down, the other half showing the same wall sealed inside taped sheeting with a zippered entry and a negative air machine ducted outside — The same word, two jobs: surface treatment on an open wall, and a sealed controlled demolition. Diagram generated for this article; it carries no figure.

The same basement, priced as two different problems

Toronto firms publish basement figures that disagree with each other, and the disagreement is instructive. Restoration Mate puts basement mould remediation at $2,500 to $8,000, The Mold Guy at $5,000 to $10,000 and up, and CPR24 Restoration reaches roughly $13,900. Wright Restorations breaks out the finished-basement case separately at $8,000 to $25,000 and up, because demolition and rebuild enter the scope once there is drywall, flooring and built-in cabinetry in the way.

This site's mould removal research describes the pattern in one line: one firm quotes a $1,500 surface treatment while another quotes a $7,500 full containment protocol for the same basement. The finish level is doing most of that work. Wright Restorations prices the unfinished case, mould on block walls and exposed framing, at $1,500 to $4,000, against $8,000 to $25,000 and up once the same growth sits behind finished surfaces. A homeowner reading two quotes is often reading one firm that assumed the walls stay and one that assumed they come out.

Access is the other multiplier. CPR24 Restoration prices crawlspace mould removal at $700 to $8,400, a range that covers the same square footage under very different working conditions. Ultimate Mold Crew prices whole-attic treatment at $3.50 to $4.00 per square foot of attic, which sits at the bottom of the market because the surface is open and repetitive. The rate is a function of the room as much as of the mould.

Nothing forces two firms to mean the same thing

Ontario has no provincial licensing for mould remediation or water damage restoration. Anyone can advertise the service, and no regulator defines what a remediation quote must contain. The voluntary benchmark is IICRC certification, with the S520 standard and the AMRT designation on the mould side and WRT and ASD on the water side, along with the Environmental Abatement Council of Ontario's mould abatement guidelines. Certification is checkable and worth checking, and it still does not standardize the scope two firms choose to quote.

That vacuum has a second effect on the paperwork. Because the inspection and the removal can be sold by the same company, hire an assessment firm separate from the remediation firm. Self-referral inflates scope, and nothing in Ontario law prevents it. Insist as well that post-remediation clearance testing be done by a different company than the one that performed the removal, since a firm testing its own work is grading its own homework.

Flat diagram contrasting two arrangements, one where a single firm both inspects and removes and then tests its own work in a closed loop, and one where an independent assessor, the remediation firm and a separate clearance tester sit in a straight line — Ontario licenses neither trade, so the only structural check available is who writes the report and who grades the work. Diagram generated for this article.

The lines that move between one quote and the other

Testing is the first line to check for. Restoration Mate prices a pre-remediation inspection with air or surface sampling at $300 to $800, and The Mold Guy puts the typical band at $350 to $550 with each extra sample adding $80 to $120. The Mold Guy prices third-party clearance testing after the work at $200 to $400, and CPR24 Restoration reaches $560. Either item can sit inside a full-service number or outside a cheap one.

Moisture-source repair is the second. This site's research prices foundation crack injection at $500 to $2,000 and sump pump replacement at $800 to $1,500, and treats both as separate from remediation. A quote that leaves the water where it is buys a repeat visit. Rebuild is the third: CPR24 Restoration prices drywall replacement after tear-out at $2 to $6 per square foot, and multiple panels at $700 to $1,250. The fourth is tax, since Ontario adds 13% HST to a service most GTA contractors quote before tax.

Flat diagram of a quote sheet ruled into blank line-item rows, with four groups of rows bracketed at the right edge and each bracket labelled testing, containment, source repair and rebuild — Four lines decide whether two quotes describe the same job. Diagram generated for this article; it carries no figure and no price.

What this index holds, and what it cannot settle

Of the 294 companies listed here, 200 carry the mould removal category and 59 carry mould inspection and testing. Forty-nine carry both, which is the arrangement that makes the self-referral question worth asking. Ten carry inspection and testing with no removal category on the record, among them SLR Consulting (Canada) Ltd. in the Financial District and T Harris Environmental Management Inc. in Islington-City Centre West.

The index holds no pricing for any of the 294. It records categories, area, rating and review count, and it does not know what a company charges, how it defines a scope, or which of two quotes describes the work a given basement needs. Ratings do not answer the question either: the average across the 277 rated companies in the index is 4.76, which is too tightly packed to separate one quoting philosophy from another. The comparison has to happen on the quotes themselves.

Making two quotes describe one job

The practical fix is to remove the ambiguity before the numbers arrive. Ask each firm to state the affected area it measured in square feet, because a per-square-foot rate quoted against a different measurement is not comparable at all. Then ask, item by item, whether containment and negative air are inside the number, whether tear-out and disposal are included, whether the moisture source repair is in or out, and whether clearance testing is quoted separately.

Get two or three quotes from IICRC-certified firms and compare line items rather than totals, because the spread between GTA firms on the same basement is the largest single saving available in an unlicensed market. Keeping remediation and rebuild as separate contracts is the other lever, since a drywall contractor working at $2 to $6 per square foot after clearance testing usually prices below a restoration firm's rebuild line.

The underlying figures sit on the DIY versus professional mould removal comparison and the mould removal cost guide. Companies are listed under mould removal and mould inspection and testing, ordered by the RestorationIndex Score, and by area under Islington-City Centre West and Burlington.

Frequently asked questions

Why do two Toronto quotes for the same basement differ by thousands?: Because the word remediation covers different work at each price. Wright Restorations prices basic treatment of exposed drywall and framing at $3.50 to $5.00 per square foot, while Ultimate Mold Crew prices full-service work with containment, tear-out and HEPA air scrubbing at $10 to $30 and CPR24 Restoration reaches $41.80. Both are describing a basement. Only one is describing demolition, negative air and disposal.
Is there a published price list for restoration work in Toronto?: No single one exists. Most large GTA firms publish no prices at all and scope each loss individually for the insurer, so the ranges collected here come from the minority of contractors that publish CAD figures. Those pages publish typical ranges for a market, and this index holds no pricing for any of the 294 companies it lists.
Does the cheaper quote mean a worse company?: Not on the evidence available. Ontario has no licensing for mould remediation or water damage restoration, so nothing forces two firms to price the same protocol. A low rate can describe a genuinely smaller scope on unfinished block and framing. The check is what the rate includes, item by item, rather than the rate itself.
What should I ask to make two quotes comparable?: Ask each firm to state the affected square footage it measured, whether containment and negative air are inside the number, whether tear-out and disposal are included, whether clearance testing is quoted separately, and whether the moisture source repair sits in or out of scope. Get two or three quotes from IICRC-certified firms and compare them line by line, not by total.
Does the quoted rate include HST?: Usually not. Mould remediation and restoration are fully taxable services in Ontario and most GTA contractors quote before tax, so 13% HST gets added to the figure discussed on site. When comparing a contractor quote against an insurer scope, check which of the two is tax-inclusive before treating the difference as a discount.

Figures on this page, and where each one comes from

Basic treatment of unfinished drywall and framing across the GTA runs $3.50 to $5.00 per square foot, with $4.00 to $5.00 typical; the finished-basement case runs $8,000 to $25,000 and up.
Wright Restorations Canada, via this site's mould removal cost research
Full-service remediation with containment, tear-out and HEPA air scrubbing runs $10 to $30 per square foot; CPR24 Restoration publishes $13.93 to $41.80 for full service in Toronto.
Ultimate Mold Crew and CPR24 Restoration, via this site's mould removal cost research
Containment setup with poly barriers, a zippered entry and negative air pressure costs $300 to $2,500 per project, and disposal of contaminated materials $100 to $700.
Mold Busters, via this site's mould removal cost research
A pre-remediation inspection with air or surface sampling runs $300 to $800, and third-party clearance testing after the work $200 to $400.
Restoration Mate and The Mold Guy, via this site's mould inspection cost research

Keep reading

Check a company before you call it

Every profile on RestorationIndex carries the hours the firm posts, its public Google review record and a quote request.

Open the directory