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Mold Remediation in Mississauga

Mold Remediation in Ontario

Mold remediation is the process of finding the source of moisture, containing the affected area, removing contaminated material safely, and cleaning or treating surfaces so mold doesn't come back. It's a different job from a general clean-up: a crew has to isolate the space with plastic sheeting and negative air pressure, run air scrubbers with HEPA filtration, cut out and bag drywall, insulation, or flooring that can't be salvaged, and then verify the work with a visual check or air/surface testing before closing the containment. Mississauga's mix of older basements, condos with shared HVAC systems, and homes that have had flooding or roof leaks means this comes up more often than people expect, especially after a wet spring or a failed sump pump.

We track 24 mold remediation companies serving the Mississauga area. When comparing them, look for proper containment practices, documented use of PPE, clear write-ups of what's being removed versus treated, and straightforward communication about testing (and whether that testing is done by an independent third party rather than the same company doing the removal). Ask how they handle the moisture source itself, since remediation that doesn't fix the underlying leak or humidity problem is a temporary fix at best.

Our scoring weighs verified customer feedback, response speed, and how consistently a company follows recognized remediation protocols, so you can shortlist faster. See the full ranked guide to water damage restoration services in Mississauga for how these businesses compare, and read our methodology for how we score and verify them.

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All mold remediation in Mississauga, ranked by score and relevance

23 businesses, scored on recent reviews. The order weighs each business's overall score by how much of its reviewed work is mold remediation, so a lower-scored specialist can rank above a higher-scored generalist.

CPR24 Restoration of Mississauga
5.0(82)✓ Google-verified

CPR24 gets consistent praise for arriving fast when basements flood or pipes burst, answering calls immediately and tackling the mess with professional equipment and clear explanations at each step. Staff handle complex jobs like category 3 sewage backups with proper containment, antimicrobial treatment, and HEPA filtration, coordinate directly with insurance adjusters to cut through paperwork, and keep pricing transparent throughout.

Serve Kings Water & Flood Restoration of Oakville
5.0(64)✓ Google-verified

From a burst pipe to mold in the bedroom, customers across the GTA report same-day or next-day arrivals and repairs completed without fuss. The team walks property owners through insurance claims and leaves work areas spotless; several reviewers noted the honesty about what work was needed and pricing upfront. Staff including the team, the team, and the team are named repeatedly for their professionalism during water restoration, mold removal, and follow-up renovations. Customers praise the combination of quick drying setup, polite communication, and high-quality finishing work that turns a stressful water event into a smooth, managed process.

ServiceMaster Restore of Mississauga
4.8(99)✓ Google-verified

Residents and commercial clients consistently report arriving crews within half an hour, staff who explain work clearly and update daily, and finished jobs that leave homes clean and dry. The team handles basement floods, pipe bursts, smoke damage, and odour control across multi-floor water intrusions; staff manage insurance paperwork, take measurements, and coordinate trades so the claim process is straightforward.

Servpro of Southwest Mississauga, Erin Mills
5.0(27)✓ Google-verified

Staff deliver fast, clear communication from first contact through project completion. Photos and daily updates keep owners informed; quotes are transparent and arrival times swift. Work spans mold removal, water damage, odor elimination, and deep cleaning, with particular strength in handling complex situations remotely or under urgent timelines. The team consistently earns trust through honest advice rather than overselling scope.

Serve Kings Mold & Water Restoration of Mississauga
5.0(18)✓ Google-verified

Every call brought a crew within an hour, usually faster. They explain what they're doing in plain language, identify the root cause (cracked foundation, faulty appliance hose), and work with insurance companies to cover costs. Basements, kitchens, bathrooms: water damage across all rooms gets the same methodical drying and restoration. Mold cleanup earns equal praise. No complaints surface across 18 five-star reviews. Staff remember details and follow through. Named technicians (the team, the team, the team) appear in multiple reviews as the steady hands who answer calls, do inspections, and supervise the larger teams. Customers feel heard and cared for in stressful moments. The phrase "magic job" and repeated thanks speak to relief more than polish.

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FIRST ONSITE Property Restoration
4.3(106)✓ Google-verified

Residents consistently report that First Onsite arrives fast and guides them calmly through stressful floods and fire damage. Staff coordinate seamlessly with insurers and follow through with quality work, from initial assessment to final cleanup. The team handles multi-level restoration, condo floods, break-ins, and fire remediation across the Mississauga-Brampton area. The team managers stay in close contact and respect homes throughout; crew leaders and tradespeople earn repeated praise for finishing on time and caring for families during crisis.

ONT Restoration
4.7(74)✓ Google-verified

When water or fire damage strikes, ONT Restoration typically responds within hours and handles mitigation with care. Reviewers consistently praise the speed of initial assessment, the professionalism of named technicians, and the thorough drying setup on-site. A small number report difficulty reaching the company initially, though most who connect say the team guides them through the repair and insurance process clearly.

Rainbow Restoration of Mississauga
5.0(31)✓ Google-verified

Five-star reviews across two years show consistent speed and professionalism. Reviewers praise the team's responsiveness to emergencies, clear pricing, careful handling of sensitive items, and ability to guide insurance claims. Work spans basement flooding, sewage cleanup, mold removal, and finishing touches like painting and flooring; customers note jobs completed on or ahead of schedule with thorough cleanup afterward.

247-Restoration Corp.
4.5(23)✓ Google-verified

Reviewers consistently report fast response, professional work, and clear explanations from the crew. The business handles mold removal, water damage, sewage backup, and emergency repairs; multiple reviewers mention staff assistance with insurance claims and same-day availability.

Leda Restoration & General Contracting
4.6(39)✓ Google-verified

Across 17 reviews, customers consistently report fast dispatch, clear communication, and professional execution on water damage, fire restoration, and reconstruction work. Staff handle insurance processes, clean up after themselves, and follow through on commitments with no negative patterns evident.

Eco Star Restoration
4.7(12)✓ Google-verified

Ten consecutive five-star reviews praise speed, professionalism, and quality across water damage, mold removal, and emergency work. Repeat customers cite fair pricing and a team that delivers on restoration and repairs without cutting corners.

Ontario Restoration Squad
5.0(7)✓ Google-verified

The team consistently arrives quickly for emergencies, removes standing water, and explains each step without surprises. Reviewers note responsiveness is their strongest asset, with one office flood resolved in 47 minutes, and thorough drying that leaves basements properly restored.

Instant Restoration 24/7
5.0(12)✓ Google-verified

When floods or fires strike, Instant Restoration answers fast and takes charge. All 12 reviews are five-star; customers highlight 45-minute emergency arrivals, hands-on insurance negotiation, meticulous drying work, and a team (notably the team) who walk distressed homeowners through every step from damage control through rebuild, leaving homes spotless and stress nearly gone.

BELFOR Property Restoration
4.5(29)✓ Google-verified

Most reviewers praise punctual, thorough flood and water restoration work, often singling out attentive project managers who kept them informed and involved. Two separate complaints detail reckless driving by staff vehicles on public roads.

Paul Davis Mississauga
4.2(65)✓ Google-verified

Most customers report rapid initial response and skilled technicians who communicate clearly and work with insurers smoothly. Several praise completion on schedule and professional results. However, one detailed complaint notes months-long delays between phases, unannounced visits, and subcontractors who caused additional damage and lack of professionalism, though the Paul Davis core team was described as solid.

EMRG (Elite Mitigation & Restoration Group)
4.0(4)✓ Google-verified

Three recent reviews praise EMRG's speed and professional handling of fire and water damage incidents, with staff responding within hours and guiding clients through mitigation without stress. An older billing complaint from four years ago describes ongoing charges to a deceased member's account despite notice, raising concerns about administrative practices.

Select Restoration Services
5.0(12)✓ Google-verified

All 11 reviews rate Select Restoration at five stars. Reviewers consistently praise rapid response, especially for weekend and after-hours calls, and note staff handled everything from initial assessment through insurance coordination and finishing work. Work was thorough: one reviewer described a technician identifying a water leak source and completing repairs promptly, another reported commercial roof damage resolved with daily photo progress reports.

Touch With Care | 24/7 Restoration in Mississauga
5.0(4)✓ Google-verified

Over five years of consistent use by one reviewer and quick emergency response across all accounts point to reliable, efficient service in the Mississauga area. Team meets diverse requests, completes jobs on schedule, and maintains professional conduct throughout.

DKI - Al-Care

#19DKI - Al-Care

61 low data
5.0(1)✓ Google-verified

One customer praised the team's quick arrival and hands-on project management, noting the restored flooring and doors exceeded their expectations.

ServiceMaster Restore of Toronto East
4.0(11)✓ Google-verifiedPublishes prices

Praised for rapid large-scale water damage response with professional coordination, but a minority of reviewers report missed appointments and poor contractor quality on some jobs.

Emergency Flood Response

#21Emergency Flood Response

60 low data
5.0(4)✓ Google-verified

All four reviews are five stars. Reviewers praise fast arrival, thorough water extraction, and polite staff who explain each step. Insurance billing direct to company noted as helpful during stressful situations.

PuroClean Canada

#22PuroClean Canada

57 low data
3.7(15)✓ Google-verified

Five recent one-star reviews report serious issues: delayed follow-up from staff, billing disputes, subcontractor damage to property and possessions, and conflicts with insurance company. Older five-star reviews praise quick response and quality work, but the weight of recent complaints about honesty and accountability creates substantial concern. Service quality appears inconsistent across branches and hinges on which technician shows up.

Tormenta Restoration

#23Tormenta Restoration

55 low data
4.2(5)✓ Google-verified

One older review praises swift emergency response and smooth insurance coordination; a more recent account reports dissatisfaction with service scope, equipment deployment, and a $11,000 bill that included charges for a bin never supplied. Evidence is limited across both reviews.

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Common questions about mold remediation

How much does mold remediation cost in Mississauga?
Small, contained jobs (a bathroom ceiling patch or a single closet) can run a few hundred dollars, while larger basement or whole-room remediation involving drywall removal, containment, and air scrubbing often lands in the low thousands. Costs climb quickly if structural drying, HVAC decontamination, or extensive material replacement is needed. Get a written scope of work, not just a price, so you know exactly what's included.
How often does a home actually need mold remediation?
Most homes never need it if moisture is controlled, but it becomes necessary after any water event that isn't dried out within 24 to 48 hours: a basement flood, a slow plumbing leak behind a wall, or a roof leak that went unnoticed. Condos and older homes with poor ventilation or a history of humidity problems tend to see repeat issues if the root cause isn't addressed.
What should I expect during the remediation process?
Expect an inspection first to find the moisture source, then containment of the work area, removal of porous materials that can't be cleaned (drywall, carpet, insulation), HEPA vacuuming and antimicrobial treatment of remaining surfaces, and a final check before the containment comes down. A reputable company will explain each step and give you photos or a report, not just a verbal all-clear.
How can I tell if a remediation company did a good job?
Look for a clear before-and-after record, confirmation that the moisture source was fixed or referred out for repair, and (ideally) a post-remediation verification, whether that's a visual clearance or third-party air testing. If mold reappears in the same spot within a few months, that's a sign the underlying cause wasn't resolved.

Last updated 2026-08-12