5 Best Mold Removal Services in Toronto (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Fenris Morrow, Expert in Professional Services · ✓ Data verified August 2026 · 8 min read

Toronto's older housing stock, from Cabbagetown rubble foundations to century-old semis, gives mold plenty of ways in, and once it's in an attic or basement it rarely fixes itself. That's why mold removal services in Toronto stay busy: The Mold Guy leads this page with 288 reviews at 4.7 stars, and well over a thousand Toronto customers have left a review after having mold removed from their home.

Short answer: The most-reviewed mold removal company in Toronto is The Mold Guy (4.7 stars across 288 reviews), followed by CleanFirst Restoration (4.9, 100 reviews) and Ultimate Mold Crew (4.9, 77 reviews). None of the companies below publish fixed remediation prices, since cost depends heavily on the size and location of the affected area, so get an in-person quote before work begins.

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1. The Mold Guy
2. CleanFirst Restoration
3. Ultimate Mold Crew
4. Absolute Mold Remediat…
5. The Restorators
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How Toronto's mold removal companies compare

#	Business	Rating	Reviews	Best for
1	The Mold Guy	4.7 ★	288	Fast response / whole-job	View ›
2	CleanFirst Restoration	4.9 ★	100	Attic / asbestos combined jobs	View ›
3	Ultimate Mold Crew - Mold Removal Toronto	4.9 ★	77	24/7 emergency	View ›
4	Absolute Mold Remediation Ltd	5.0 ★	53	Family-owned / basements	View ›
5	The Restorators - Toronto	4.6 ★	67	Flood / fire restoration	View ›

5 Best Mold Removal Services in Toronto (2026)

Our top picks, reviewed

#1 Overall🕑 Open 7 days↩ Responds to reviews

The Mold Guy

4.7288 Google reviews

The Mold Guy is a Toronto mold removal, inspection and testing company that is verified, insured and WSIB certified. It handles the full process from inspection through remediation, and reviewers describe an inspector arriving to assess the site before the removal crew is scheduled. The company also connects clients with contractors for any follow-up rebuild work.

What people praise

Fast response, with same-morning inspections reported
Inspectors give a clear summary of the work required before scheduling
Crews described as efficient, professional and respectful of the home
Practical, non-alarmist advice rather than fear-based pricing

Worth knowing

A small share of reviewers rate it 1 or 2 stars, so ask for a detailed written scope before agreeing to work

Reputation scorecardrank in Toronto

Rating4.7 / 5

Review volume288 · 97th

Confidencehigh

Recency3 weeks ago

Info completenesssite · phone · hours

Rating breakdown91% 5-star

✓ VerifiedSource: Google

Our take: The most-reviewed mold company in Toronto and a strong default for most jobs, thanks to a fast inspection-to-remediation pipeline and connections to follow-up contractors.

Website +1416-333-2999 Directions

437 Roncesvalles Ave #420, Toronto, ON M6R 3B9

#2🕑 Open 6 days/wk↩ Responds to reviews

CleanFirst Restoration

4.9100 Google reviews

CleanFirst Restoration has served Toronto and the GTA for over 32 years, offering mold inspection, mold removal and remediation, asbestos removal, air quality testing and disinfection services. Technician Michael is named repeatedly in reviews for handling attic mold remediation and asbestos abatement together, and jobs come with a warranty.

What people praise

Handles mold and asbestos abatement in the same visit when needed
Work comes with a warranty
Clean, professional execution noted across attic and flooring jobs
Long local track record

Reputation scorecardrank in Toronto

Rating4.9 / 5

Review volume100 · 92th

Confidencemoderate

Recency8 weeks ago

Info completenesssite · phone · hours

Rating breakdown97% 5-star

✓ VerifiedSource: Google

Our take: Best suited to jobs that combine mold with an asbestos or insulation concern, given its long history offering both under one roof.

Website +1800-520-7443 Directions

18 King St E Ste 1400, Toronto, ON M5E 1L4

#3🕑 Open 7 days↩ Responds to reviews

Ultimate Mold Crew - Mold Removal Toronto

4.977 Google reviews

Ultimate Mold Crew offers IICRC-certified mold inspection, testing and remediation across the Greater Toronto Area, available 24/7 for both residential and commercial properties. The company uses EPA-approved removal methods including HEPA vacuuming, containment systems and negative air pressure, and also handles attic mold and interior demolition.

What people praise

Genuine 24/7 availability for urgent cases
Clear, itemized quotes noted as more detailed than competitors'
Identifies and addresses the root moisture cause, not just visible mold
Reassuring, communicative team during a stressful situation

Reputation scorecardrank in Toronto

Rating4.9 / 5

Review volume77 · 87th

Confidenceearly

Recency4 months ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: The strongest pick here if the mold discovery is urgent, since round-the-clock availability and root-cause diagnosis are both called out repeatedly by reviewers.

Website +1647-985-2739 Directions

11 Shallmar Blvd Unit 308, Toronto, ON M5N 1J6

#4🕑 Open 7 days↩ Responds to reviews

Absolute Mold Remediation Ltd

5.053 Google reviews

Absolute Mold Remediation is a family-owned and operated mold removal company serving Toronto, Burlington, Hamilton, Oakville and the surrounding region, with over 20 years of experience. Vince and Danielle lead client contact, and the company also offers attic sheathing remediation, air quality testing and infrared thermal imaging.

What people praise

Answers calls even on weekends
Clear, upfront pricing with contracts that avoid surprise costs
Thorough cleanup, with debris removed the same day in most cases
Praised for working well with pensioners and first-time homeowners

Worth knowing

Slower recent review pace than the top names on this page

Reputation scorecardrank in Toronto

Rating5 / 5

Review volume53 · 76th

Confidenceearly

Recency7 months ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: A solid, personable option for a basement or attic job, especially if a family-run company and a fixed, explicit contract matter to you.

Website +1800-578-1291 Directions

28 Thornhill Ave, York, ON M6S 4C5

#5🕑 Open 7 days↩ Responds to reviews

The Restorators - Toronto

4.667 Google reviews

The Restorators has operated in the Greater Toronto Area since 1993, offering 24-hour emergency response for flood, fire and water damage, and works directly with insurance companies on claims. The company describes itself as handling the full path from initial stabilization through rebuild.

What people praise

Fast emergency response, including a midnight callout reported by one reviewer
Coordinates directly with insurance adjusters on behalf of clients
Handles both the demolition and the rebuild in one contract

Worth knowing

At least one detailed review describes a dispute over invoice size relative to the original insurance estimate, so confirm the expected total in writing before insurance is involved
Another reviewer reported waterproofing and finishing issues that required a redo

Reputation scorecardrank in Toronto

Rating4.6 / 5

Review volume67 · 82th

Confidenceearly

Recency4 weeks ago

Info completenesssite · phone · hours

Rating breakdown90% 5-star

✓ VerifiedSource: Google

Our take: Useful for a combined flood-and-mold job where insurance coordination matters most, but get every cost figure in writing given the mixed feedback on billing.

Website +1416-835-3885 Directions

18 King St E Ste 1400, Toronto, ON M5E 1L4

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Watch: 5 Best Mold Removal Services in Toronto (2026)

How we score

Every number on this page is computed from public Google data on the date shown, not from opinion or payment. Rating is the business’s live Google star average. Review volume is how many customers have rated them, ranked against other Toronto mold companies. Confidence weighs the rating by that volume, so a 4.9 from a hundred people carries more weight than a 4.9 from a handful. Recency reflects how recently customers are still leaving reviews. No business can pay to change these numbers.

How much does mold removal cost in Toronto? (2026)

None of the companies above publish a fixed remediation price online, since cost depends on the size of the affected area, whether asbestos or structural rebuild is involved, and how the room is accessed. Most offer a free or low-cost inspection first, so start there and get the scope in writing before agreeing to work.

Serving all of Toronto

The companies above cover Toronto and the surrounding GTA, including Cabbagetown, Riverdale, the downtown waterfront condo towers and neighbourhoods out past High Park. Searching for mold removal near me? Every listing below shows a live phone number so you can reach the closest option fast.

What to ask before you hire a mold removal company

Is the inspection free, and does it include a written scope of work?
Are you IICRC certified and WSIB insured?
Does the quote include testing to confirm the mold is fully cleared afterward?
Will you handle asbestos testing if the affected area was built before 1986?
Do you work directly with my insurance company, and who submits the claim?
What warranty applies to the work?

Frequently asked questions

How did you choose these mold removal companies?

We started from mold removal companies in Toronto with a public Google presence, then ranked by rating, review volume, consistency and recency. See How we score above.

Are these rankings paid?

No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.

How often is this updated?

The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.

Do Toronto mold companies offer 24/7 emergency service?

Some do. Ultimate Mold Crew and The Restorators both advertise round-the-clock availability, which matters most for flood-related mold that needs immediate containment.

Why is mold such a common problem in older Toronto homes?

A lot of the housing stock downtown and in the east end is a century old, with rubble foundations and gaps around old plumbing stacks. In attached homes, mold and moisture can move between units without ever reaching outside air.

The bottom line

The Mold Guy is the safe default given its review volume and fast inspection turnaround, while Ultimate Mold Crew is worth calling first if the situation is urgent. Whichever company you choose, insist on a written scope before removal starts.

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