The Crew People Call on Their Worst Day
Hamilton Hoarding Pros is the Greater Hamilton and Kitchener-Waterloo arm of Extreme Clean Group. We handle biohazard, trauma, hoarding, water damage, and infection control for families, executors, landlords, and commercial facilities. Quietly, and to a standard you can verify.
Built for the Jobs Other Companies Turn Down
Most cleaning companies are not equipped to walk into a delayed-discovery death, a sewage-flooded basement, or a home where hoarding has crossed into a public-health problem. Not because they lack the will, but because the work needs certification, containment equipment, and licensed disposal that a general cleaning crew does not carry.
That gap is where we operate. Our owner, Dean Lemens, has spent more than 20 years in biohazard, trauma, and extreme cleaning, and holds Triple Master IICRC designations along with ABRA bio-recovery certification. Extreme Clean Group has grown from that base to serve Ottawa, London, Mississauga, Hamilton, Kitchener-Waterloo, and Vancouver.
What has not changed is how a job feels from your side of it. You call, a person answers, an unmarked vehicle arrives, and the situation stops getting worse. We handle the hazard, the paperwork, and the insurer. You handle everything else you are already carrying.
What We Are Actually Certified to Do
These are not decorative badges. Each one determines what our crews can legally handle, how waste gets disposed of, and whether the decontamination can be verified.
ABRA Certified
American Biological Recovery Association bio-recovery certification.
IICRC Triple Master
Master Fire & Smoke Restorer, Master Water Restorer, Master Textile Restorer.
ACAC CRIE
Certified Residential Indoor Environmentalist for air quality and mould.
Type 3 Asbestos Supervisor
Licensed for the highest-risk asbestos work under O. Reg. 278/05.
IPAC Trained
Infection Prevention and Control training for medical and commercial sites.
Ontario DOH Registered
Registered and holding government infection-control contracts.
Meet Our Team
Dean Lemens
Owner & President, Extreme Clean Group
Dean Lemens is the owner and president of Extreme Clean Group and leads Hamilton Hoarding Pros. With over 20 years of experience in biohazard, trauma, and extreme cleaning across Greater Hamilton and Kitchener-Waterloo, he holds Triple Master IICRC certifications and ABRA credentials, and is trusted by local law enforcement and funeral directors.
The Extreme Clean Team
Certified Remediation Technicians
The Extreme Clean team is a crew of certified bio-recovery technicians serving Hamilton, Kitchener-Waterloo, Halton, and Niagara. Trained in IPAC infection control, bloodborne-pathogen handling, and structural drying, they deliver discreet, compassionate remediation around the clock.
Twenty Years, Measured
Trusted During Life’s Most Difficult Moments
Every job is confidential. These are real situations our crews handled across Greater Hamilton and Kitchener-Waterloo.
My father passed alone in his apartment and wasn't found for over a week. Dean's team arrived within an hour, handled everything with incredible sensitivity, and dealt directly with our insurance. I never had to set foot in that apartment again.
I manage 40+ rental units across Kitchener-Waterloo. When a tenant left behind a severe hoarding situation with animal waste and needles, Hamilton Hoarding Pros had the unit safe and rent-ready in three days. No other company I called would even take the job.
Our basement flooded with sewage at 2 AM on a Sunday. They answered immediately, arrived by 3:30, and worked through the night. The tobacco smell that had lingered for years was gone after their ozone treatment too. Genuinely saved us from a far worse outcome.
Talk to Someone Who Has Handled This Before
One call gets you an honest assessment from a certified crew. No pressure, no judgment, and complete confidentiality.