Welcome to “Ultimate Mold Crew,” where our work is our pride and we proudly serve Toronto and the surrounding Greater Toronto Area (GTA). With more than 12 years of experience, we specialize in Professional mold remediation, testing & inspection. Our Toronto mold removal experts work hard to deliver superior services to our clients.
FREE MOLD INSPECTION VIA VIDEO CALL
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Professional Mold Removal Services in Toronto
“Ultimate Mold Crew” is a Verified, WSIB-Insured & IICRC Certified mold removal company in Toronto. We handle all aspects of mold remediation projects from start to end.
At Ultimate Mold Crew, customer satisfaction is paramount. We are your trusted Go-to Mold Guys in Toronto.
Our Certified mold remediation professionals uses EPA-approved Mold removal agents & methods, including HEPA filtration, containment systems and negative air pressure.
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 complete and safe mold removal.
What We Do
Mold Removal
Certified for Quality & Safety








Trusted Mold Removal Experts
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.
Trusted by Toronto Homeowners since 2015
What Sets Us Apart?
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
- Our Certifications & awards
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
Neighbourhoods We Serve
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
North Toronto and outer districts: North York, Scarborough, Etobicoke, York, Willowdale, Don Mills, Bayview Village, Downsview, Weston, Rexdale, Agincourt
🔴 Open now — 24/7
Mold Emergency? Talk to our specialist now
Call 647-985-2739 | Email info@ultimatemoldcrew.ca
Trustindex Verified Customer Reviews
Trusted by Toronto Homeowners
EXCELLENT Based on 77 reviews Posted on Google Amanda HTrustindex 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 AbrahamTrustindex 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 EdwardTrustindex 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 BrailkoTrustindex 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 GTrustindex 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 LilyTrustindex 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 ConcessioTrustindex 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 SingTrustindex 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 MatthewsTrustindex 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
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 $1200 to $5,000 depending on the affected area size, mold severity, material damage, and containment requirements. Small bathroom mold removal projects typically cost $500 to $1,500, while attic, basement, or whole-home remediation can exceed $10,000. Toronto mold removal companies often charge $10 to $30 per square foot for professional remediation, air filtration, and post-removal cleaning. Book a free visible mold inspection by video call.
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.
Should I leave my house during cleanup?
Certain types of black mold can release toxic spores that compromise indoor air quality and cause respiratory issues. For small areas under 10 square feet, you usually do not need to leave. For extensive remediation, we set up negative pressure containment zones with HEPA air scrubbers. If the mold is widespread or affects your HVAC system, we may recommend vacating the property temporarily for your safety.
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%.
SOURCES:
- https://pmc.ncbi.nlm.nih.gov/articles/PMC5490296/
- https://ultimatemoldcrew.ca/pink-mold-shower/
- https://ultimatemoldcrew.ca/blue-mold-on-walls-ceiling-home/
- https://ultimatemoldcrew.ca/white-mold-types-causes-removal/
- https://ultimatemoldcrew.ca/green-mold-dangerous/
- https://ultimatemoldcrew.ca/orange-slime-mold/
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?
Can mold come back after remediation?
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.
Reach Us On Google Maps
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.






