Toronto Mold Removal & Remediation

Welcome to The Ultimate Mold Crew, where customer satisfaction is paramount. As Toronto’s trusted mold removal specialists, we deliver comprehensive residential and commercial mold removal services under strict ANSI/IICRC S520 guidelines. From toxic black mold removal to structural containment and root-cause moisture control, our certified technicians protect your property’s structural integrity and indoor air quality with guaranteed clearance.

10+ Years – Safe, Fast & Guaranteed – Available Near You 24/7

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FREE MOLD INSPECTION VIA VIDEO CALL

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Why Toronto Property Owners Trust Ultimate Mold Crew

Ultimate Mold Crew is a local IICRC-certified mold remediation company serving Toronto and the GTA with over 10 years of experiance. Our mold remediation professionals use EPA-approved Mold removal agents & methods, including advanced HEPA vacuuming, deodorization, containment systems and negative air pressure. We specialize in addressing mold root-cause in Toronto’s unique weather. Extreme seasonal freeze-thaw cycles and aging architectural stock present distinct environmental vulnerabilities that foster mold growth:

Historic Brick & Rubblestone Basements (Downtown, Cabbagetown, The Annex): Solid masonry/double-brick homes prone to basement seepage and poor interior vapour barriers.
Attic Sheathing Condensation (North York, Scarborough, Etobicoke): Post-war bungalows and 2-storey homes with soffit-ventilation blockages leading to winter attic condensation.
Cold Cellars & Crawlspaces:

We help get rid of mold in your home in areas including: Basement , Attic, Bathroom, kitchen, Crawlspace, drywall, ceiling, wooden floor, attic plywood , concrete and more. Whether you’re dealing with black mold, hidden mold behind walls, or widespread contamination, our team ensures fast and safe mold removal.

Book a free mold inspection online to identify, get rid of mold and prevent mold recurrence.

Call ☎️ 647-985-2739 for 24/7 Emergency Response

Comprehensive Mold Removal Services in Toronto & the GTA

Mold Removal

We offer professional Basement Mold Removal & Moisture Control to ensure your property remains safe and free of mold growth.

Certified Air Quality & Mold Spore Testing

We detect poor indoor air quality and air pollution with our professional indoor air quality & environmental testing services

Water Damage Cleanup

we provide emergency water damage cleanup in Toronto with a fast, 24/7 response to minimize damage

Attic Mold Removal

Expert black mold removal for toxic Stachybotrys chartarum, mycotoxins and hidden moisture sources using safe, certified remediation protocols.

Mold Inspection

Lab-grade ERMI mold testing and airborne spore analysis to accurately detect hidden mold colonies and indoor air quality hazards

IICRC-Certified Mold Removal & Remediation

In Ontario, mold remediation compliance relies on Health Canada (PCP Act / DIN-registered biocides), Ontario Ministry of Labour (MOL) environmental guidelines, the Ontario Building Code, and ANSI/IICRC S520 Standard for Professional Mold Remediation.

Our Master Mold Remediators are fully certified by IICRC, CMR, and IAC2, and recognized by MICRO for professional mold remediation. As a WSIB-approved and BBB-accredited local mold removal company in Toronto, we ensure all mold removal work is completed using safe, compliant, and proven methods according to the property type and extent of mold infestation.

Contact our certified Toronto mold removal team for a free visual inspection and tailored estimate or Call ☎️647-985-2739

What Sets Us Apart?

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Certified & Insured

With more than a decade of experience, our IICRC-certified professionals provide expert mold removal and remediation services.

Advanced Equipment

We use negative air pressure systems and HEPA filtration to safely remove mold and prevent cross-contamination during the remediation process.

End To End

Our comprehensive approach goes beyond mold removal. We locate and resolve the underlying moisture issues, safely contain affected areas, and help ensure long-lasting protection against future mold growth.

Ontario Safety Compliance

Our safe mold removal operations adhere strictly to WSIB compliance, are fully insured, and meet ANSI/IICRC S520 guidelines & OHAS (Occupational Health and Safety) Regulations and the Ontario Building Code

Detailed Documentation for Insurance

We provide full reports and documentation to support insurance claims and property records.

Post-Remediation Verification

We conduct final testing to ensure your Toronto property is safe, clean, and ready for re-occupancy.

Ultimate Mold Crew — get to know us

The Ultimate Mold Crew

IICRC-CMRC Certified Mold Remediation Specialist

ECO Friendly

Top Rated — Best Mold Removal in GTA

by HomeStars Canada

Our office

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

Neighborhoods We Serve Across Toronto & Surrounding GTA

Ultimate Mold Crew serves homeowners, condo owners, landlords, property managers, real estate agents, and businesses across Toronto, including:

Central Toronto: Downtown Toronto, The Annex, Yorkville, Rosedale, Cabbagetown, St. Lawrence, Harbourfront, Liberty Village, Trinity Bellwoods, Kensington Market

Midtown Toronto: Forest Hill, Casa Loma, Yonge and Eglinton, Davisville Village, Leaside, Lawrence Park, Summerhill, Deer Park, Moore Park

West Toronto: High Park, Bloor West Village, The Junction, Roncesvalles, Parkdale, Swansea, Baby Point, Mimico, Long Branch, The Kingsway, Islington

East Toronto: The Beaches, Leslieville, Riverdale, Danforth, East York, Greektown, Upper Beaches, Birch Cliff

We serve many other surrounding areas within Greater Toronto Area such as North York, Scarborough, Etobicoke, Brampton, Markham and many more, See footer for complete list.

🔴 Open now

Mold Emergency? Talk to our specialist now

Call 647-985-2739 | Email info@ultimatemoldcrew.ca

647-985-2739

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#1 For Mold Removal In TorontoWith 100+ 5 Star Reviews

Trustindex Verified Customer Reviews

Trusted by Toronto Homeowners

      EXCELLENT  
   Based on 77 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Amanda H 
 
 
 
 Trustindex verifies that the original source of the review is Google. Ultimate Mold Crew helped remediate mold in the attic of one of my properties and I found them to be very professional, responsive, and helpful. They provided before & after pictures along with a certificate of remediation. They were easy to book, accommodating to my schedule, and left the place spotless afterwards. Highly recommend!
  
 
      Posted on Google  
   
   Miriam Abraham 
 
 
 
 Trustindex verifies that the original source of the review is Google. I spoke with Priya when I called to inquire about my concern about possible mould in my basement. Priya was extremely helpful- patient and knowledgeable. All the information she provided convinced me that not only was UMC an expert in this field, but they truly cared about their customers. They exemplify  a well run family-owned company!
  
 
      Posted on Google  
   
   Jansen Edward 
 
 
 
 Trustindex verifies that the original source of the review is Google. Really pleased with the service—everyone was friendly, quick to respond, and did a great job. They came out fast, got everything sorted properly, and worked in a very professional way. Fair pricing too. Hopefully we won’t need them again, but we’d definitely use them if we do. Thanks again!
  
 
      Posted on Google  
   
   Valeriia Brailko 
 
 
 
 Trustindex verifies that the original source of the review is Google. I called them for basement waterproofing in Mississauga after noticing moisture on the walls. They did exterior waterproofing and sealed everything properly. Super clean job and very reliable team.
  
 
      Posted on Google  
   
   John G 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had a great experience with these guys doing a mold removal at my home.  I'm not posting any pictures cuz it's my home for privacy reasons Please note I had a small job in comparison to some of the other jobs out there. This company was quick to respond to me and and my questions.  My contact gave me great advice over the phone and reassured me that the job would be simple and easy which it was. These guys came in at half the price of some of their competitors.  These guys also came in at a fair price for the amount of work that they're doing.  The quotes were detailed and well set up and not half-assed like some of their competitors. The person that came to my home was professional, honest and awesome.  He walked me through every step that he took to deal with the mold.  He showed me photos outlining the issues I had the steps she took more or less to fix it and the before and after. You cleaned up after himself left nothing behind. Took everything with him. This company is just awesome.  The experience was awesome as well.
  
 
      Posted on Google  
   
   Lily 
 
 
 
 Trustindex verifies that the original source of the review is Google. I usually don’t write big reviews, but I had to for these guys. We recently had a major leak coming in from outside into our home and contacted Ultimate Mold Crew. They came the very next day and started right away. They did an amazing job removing all the mold and made sure proper containment and barriers were in place to protect the rest of our home and family. They also walked us through every step, which we really appreciated. During the process, once the walls were opened, we discovered cracks and leaking around our windows that we didn’t even know about. We’re very grateful they were able to identify the root issues and even provide a trusted contact to help fix them. You have an amazing team—very professional. You guys are awesome. Highly recommended!
  
 
      Posted on Google  
   
   Fabian Concessio 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had a substantial amount of mold in our basement, and Ultimate Mold Crew did an amazing job. From start to finish, they made safety their top priority — taking every precaution to protect our family, our home, and the air quality throughout the process. Their professionalism and genuine care really stood out. You can tell they follow proper protocols and don’t cut corners when it comes to safety. We are extremely satisfied with their work and couldn’t be happier with the results. Highly recommend!
  
 
      Posted on Google  
   
   Sabal Sing 
 
 
 
 Trustindex verifies that the original source of the review is Google. Ultimate Mold Crew did an amazing job with our interior demolition. There was mold everywhere and we were honestly really scared about the situation. From the moment we called, they answered right away, reassured us, and gave us a fair price. Their team worked quickly but still kept everything extremely professional and thorough. You can tell they really know what they’re doing and actually care about doing the job right. If I could give more than 5 stars, I absolutely would. Highly recommend them to anyone dealing with mold issues!
  
 
      Posted on Google  
   
   Chris Matthews 
 
 
 
 Trustindex verifies that the original source of the review is Google. Easy to book and competitive prices. Johnny was prompt to answer all questions. Dio arrived on time and gave me a comprehensive review of the clean. He also diagnosed and resolved the cause of the mold. Would definitely hire again.

How We Get Rid Of Mold

Our 4-Step IICRC S520 Mold Remediation Process Process

Four clear steps to identify the problem, contain it safely, and remove mold from your home or business.

Step 01

Thermal Imaging & Moisture Inspection

We deploy calibrated infrared thermal imaging and moisture meters to map hidden water intrusions behind drywall, masonry, and subflooring

Step 02

Containment & Negative Air Pressure (HEPA Filtration)

To prevent cross-contamination to unaffected living spaces, our crew establishes 6-mil poly containment barriers fitted with industrial air scrubbers that generate continuous negative air pressure.

Step 03

Safe Contaminated Material Removal

All contaminated, non-salvageable porous materials are bagged and disposed off

Step 04

Clearance Testing & Post-Remediation Verification

We ensure safety through independent third-party spore-trap testing. Containment barriers remain sealed until independent laboratory clearance confirms ambient spore counts match or beat outdoor baseline air..

Step 01

Mold inspection

Helping Toronto Homeowners & Businesses

Mold Removal As Per Property Type & Location

Mold problems are not the same in every property. Older basements in Midtown, finished basements in Etobicoke, high-rise condos downtown Toronto and Brampton, attic ventilation issues in North York, and humidity problems near the waterfront can all require a different inspection and remediation plan. In high-density condos and apartments, mold frequently appears around windows, fan coils, bathrooms, and laundry closets. Whether mold appears after basement leaks, foundation seepage, plumbing failures, or condensation behind finished walls, our team can inspect the area and recommend the right next step.

End To End Attic Mold Removal

Attic mold often comes from bathroom fans venting into the attic, roof leaks, blocked soffits, poor insulation, or weak ventilation. We inspect sheathing, rafters, insulation, and ventilation before recommending removal. Our attic mold removal services safely eliminate mold while addressing the root cause. We identify ventilation issues, correct moisture buildup, and ensure your attic remains mold-free long-term.

For Commercial and Rental Properties

For offices, retail units, rental homes, multi-unit buildings, and managed properties, we provide clear documentation, scope of work, containment planning, and remediation support.

Certified remediation results — same-day service available

Before and After mold removal — Same-day services available near you.

How Much Does Mold Removal Cost in Toronto?

Mold removal cost in Toronto ranges from $500 to $6,000 depending on the affected area size, mold severity, material damage, and containment size, demolition requirements, HEPA air scrubber run-time, and 3rd-party laboratory clearance testing.:

Localized Remediation ($500 – $1,500): Surface abatement in small bathrooms, drywall patches, or localized cold-cellar corners without full structural containment.
Attic Mold Remediation ($2,200 – $4,800): Complete treatment of roof trusses, sheathing encapsulation, and baffles under HEPA negative pressure.
Full Basement Remediation ($3,000 – $7,500+): Extensive removal of contaminated drywall, subflooring, insulation, and foundational framing with active air scrubbing.
Comprehensive Whole-Home Remediation ($8,000 – $15,000+): Multi-zone containment, structural drying following sewage/water damage, and independent clearance verification.

Need a detailed breakdown by square footage, material type, and insurance coverage? Read our complete Toronto Mold Removal Cost & Pricing Guide.”

Questions We Often Hear

How fast can mold be removed from a Toronto home?

Most smaller mold remediation jobs take 1 to 2 days. Larger jobs involving containment, demolition, drying, cleaning, disposal, or testing may take longer.

What types of mold are commonly found in Toronto homes?

Common mold types in Toronto homes include Stachybotrys (black mold), Aspergillus, Fusarium Cladosporium and Penicillium.

These molds grow in damp environments such as basements, attics, and leak-prone areas.

Each type spreads through spores and thrives in humidity above 60%.

Do you provide mold remediation services outside of Toronto?

Yes. While our primary hub serves the Greater Toronto Area (GTA), we provide full-service mold inspections and certified remediation across Brampton, Etobicoke, Mississauga, Vaughan, and surrounding municipalities. Our local teams are strategically positioned to handle residential and commercial emergencies quickly.

How long does the mold remediation process take?

Most residential mold removal projects in Toronto take between 1 to 3 days to complete. The timeline depends on the containment size, the depth of material penetration, and the drying time required for structural drying. We do not pull down containment barriers until air quality tests confirm that spore counts have returned to safe, normal levels.

How does your Free Video Call Mold Inspection work?

To save you time, we offer a Free Video Call Mold Inspection. You connect live with one of our certified mold technicians via your smartphone. You show us the problem areas, and our expert will analyze the visible growth, discuss potential moisture sources, and determine if an on-site physical inspection or air quality testing is required.

How can I detect mold growth at home?

Detect mold by identifying musty odors, dark spots, water stains, and humidity above 60%. Mold often hides behind walls and ceilings. Professional inspection confirms hidden growth using moisture meters and air testing.”

Ask yourself:

Do symptoms ease when you leave a certain room?
Do you feel better while at work or outdoors?
Do symptoms return within minutes of re-entering your home?

If the pattern repeats, hidden mold could be the cause. Quick mold remediation helps restore indoor air quality and reduces ongoing health problems.

Do you remove mold in Toronto condos?

Yes. We handle mold in condo bathrooms, fan coil areas, window frames, laundry closets, kitchens, storage spaces, and exterior wall areas.

Do I need mold testing before removal?

Mold testing is not required in most cases. Visual inspection identifies contamination and determines removal methods. Testing helps in complex cases to confirm mold type and spread, especially in hidden or large-scale infestations.

Does homeowners insurance cover mold removal in Toronto?

Yes, if the moisture source is not fixed. Good remediation includes removal, cleaning, and moisture-source correction.

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PH3G+FQ Toronto, Ontario, Canada

Helpful Resources

Mold Tips & Insights

Explore our blog for detailed mold checklists, DIY tips, guides, and infographics on mould prevention to maintain a healthy home. Get practical solutions with expert advice to kill mold effectively.