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Ontario · updated October 2026

Mold Removal Companies: the standings

481 mold removal companies ranked across 57 Ontario communities, by Google rating and review count from 27,762 reviews. Refreshed monthly. Nobody can pay to move up.

Who leads in each community

The mold removal companies holding first place on each town board, ordered by review volume.

1. London Steam Carpet, Upholstery & Air-Duct Cleaning

   ★★★★★ 4.8 · 976 reviews
   #1 of 19 mold removal companies in London

2. Supreme Services

   ★★★★★ 4.9 · 523 reviews
   #1 of 19 mold removal companies in Windsor

3. Home Inspection Right Away - Certified, Insured, Professional

   ★★★★★ 5 · 510 reviews
   #1 of 15 mold removal companies in Meaford

4. Paul Davis Toronto

   ★★★★★ 4.8 · 498 reviews
   #1 of 20 mold removal companies in Etobicoke

5. Inspect Tech Property Inspections

   ★★★★★ 4.9 · 440 reviews
   #1 of 20 mold removal companies in Woodstock

6. RPM @ Home Team Golden Horseshoe

   ★★★★★ 4.7 · 436 reviews
   #1 of 11 mold removal companies in Cambridge

7. Fully Completely Inc Cleaning & Restoration

   ★★★★★ 4.6 · 403 reviews
   #1 of 20 mold removal companies in Newmarket

8. O'Dwyer Insulation

   ★★★★★ 5 · 383 reviews
   #1 of 15 mold removal companies in Guelph

9. Gladiator Pro Wash Window Cleaning & Pressure Washing

   ★★★★★ 4.9 · 332 reviews
   #1 of 10 mold removal companies in Fergus

10. ServiceMaster Restore of Niagara

    ★★★★★ 4.9 · 327 reviews
    #1 of 19 mold removal companies in Niagara Falls

Mold Removal Companies by community

Pick a town for its full board, in order.

• Acton — 14 ranked
• Ajax — 17 ranked
• Alliston — 11 ranked
• Angus — 12 ranked
• Arnprior — 3 ranked
• Barrhaven — 20 ranked
• Barrie — 20 ranked
• Bradford — 12 ranked
• Brampton — 19 ranked
• Brantford — 10 ranked
• Burlington — 20 ranked
• Cambridge — 11 ranked
• Collingwood — 4 ranked
• Creemore — 5 ranked
• Elmira — 16 ranked
• Elora — 3 ranked
• Erin — 19 ranked
• Etobicoke — 20 ranked
• Fergus — 10 ranked
• Guelph — 15 ranked
• Hamilton — 20 ranked
• Innisfil — 20 ranked
• Kanata — 19 ranked
• Kemptville — 9 ranked
• Kitchener — 18 ranked
• London — 19 ranked
• Markham — 19 ranked
• Meaford — 15 ranked
• Milton — 4 ranked
• Mississauga — 20 ranked
• Nepean — 20 ranked
• Newmarket — 20 ranked
• Niagara Falls — 19 ranked
• North York — 20 ranked
• Oakville — 20 ranked
• Orillia — 19 ranked
• Orléans — 6 ranked
• Oshawa — 17 ranked
• Ottawa — 20 ranked
• Owen Sound — 5 ranked
• Pickering — 18 ranked
• Richmond Hill — 9 ranked
• Rockland — 14 ranked
• Scarborough — 20 ranked
• St. Catharines — 15 ranked
• Stayner — 10 ranked
• Stittsville — 20 ranked
• Stratford — 3 ranked
• The Blue Mountains — 16 ranked
• Toronto — 19 ranked
• Vaughan — 18 ranked
• Wasaga Beach — 17 ranked
• Waterloo — 18 ranked
• Welland — 18 ranked
• Whitby — 18 ranked
• Windsor — 19 ranked
• Woodstock — 20 ranked

How these standings are built