Mold remediation is the process of finding where moisture got into a building, removing the mold it grew, and fixing the conditions that let it start in the first place. In Ottawa, that usually means basements after spring thaw or heavy rain, bathrooms and kitchens with poor ventilation, attics with roof leaks or bad insulation, and older homes with stone foundations that hold dampness. A proper job includes an inspection to find the moisture source, containment to stop spores from spreading through the HVAC system or into other rooms, removal of affected drywall, insulation, or framing, HEPA air scrubbing, and a final check (sometimes with a third-party air quality test) to confirm the space is clear before anyone closes the walls back up.
We have 29 mold remediation businesses listed for the Ottawa area, ranging from small owner-operated crews to larger restoration companies that also handle fire and water damage. Quality varies a lot in this trade, so before hiring, ask whether they follow IICRC S520 standards, whether they separate testing from remediation (a company that does both has an incentive to find problems), how they contain dust and spores during removal, and whether the quote includes post-remediation verification, not just demolition and cleanup.
Our scoring looks at how each company handles these details, along with responsiveness, licensing, and how they're rated by past customers. See the full ranked list at best water damage restoration services in Ottawa, and read how we score companies on the methodology page.
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29 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.
All ten reviews award five stars. Reviewers consistently praise quick response times, weekend availability, competitive pricing, and on-budget completion. One commercial client noted reliable turnaround for drywall mold work; a homeowner credits the team's expertise and honesty with saving thousands in potential damage costs. Mold removal from attics and kitchens, flood restoration, asbestos abatement, and water damage work all receive high marks.
Most jobs finish fast and clean, with crews that show up early and explain what's happening. Drywall patches blend seamlessly and ceilings match perfectly; the team protects work areas and tidies daily. One customer came back twice at no charge to perfect a water-damaged ceiling. Office communication sometimes stumbled: one household felt pressured and got mixed messaging about fees and scope, while another was left mid-job without clear next steps and then invoiced for incomplete work. Water-damaged ceiling repairs stand out across multiple reviews, from small patches to full ceiling replacements after leaks or burst supply lines. Mould work appears straightforward: remove affected drywall, remediate, patch and paint. The team like the team, the team, and the team earned specific praise for professionalism and finishing detail.
Five-star reviews from homeowners and contractors consistently praise the team and the team for remaining calm and fair-dealing during crises like flooding and water damage. During Ottawa's July 1 floods, when high demand meant the company couldn't take all jobs, reviewers noted the team answered questions and offered advice anyway. Beyond emergency work, general contractors rely on them repeatedly for asbestos removal, demolition, and mold remediation because they show up on time, contain hazards properly, and leave sites clean. Long-term clients report five years of consistent service marked by dependable response times and clear communication. What sets them apart in vulnerable moments is honesty: one reviewer specifically noted that while other companies exploited flood-stressed homeowners, this team explained options without pressure. Inspectors, contractors, and homeowners all describe feeling confident that work would be done correctly and safely.
Fast response times, skilled teams, and transparent communication define the experience here. From mold decontamination to full water damage restoration, the work gets done on schedule with close attention to quality. Reviewers consistently report feeling confident in the team's expertise. Renovation work dominates the recent feedback, with bathroom, kitchen, basement, and living room projects praised for design input and finishing details. When emergency water damage or mold work arose, the crew moved quickly and resolved the problem thoroughly. Pricing is noted as fair for the quality delivered.
Same-day water emergencies, honest assessments, and skilled restoration define MICO's reputation. Reviewers consistently praise quick arrival, transparent quotes that hold, and crews who communicate clearly while handling everything from initial water extraction to final finishes, leaving homes functional and aesthetically restored.
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When the July 1 floods hit Ottawa, 911 Restoration was the only company to respond to dozens of calls at once, getting crews on-site within 24 hours and keeping families informed every step. Staff explained the work, answered questions with patience, and treated homes and people with care during an overwhelming crisis. The team handles water extraction, mold assessment, fire cleanup, and insurance coordination across Nepean, Kanata, and Orleans. Reviewers praise their manage-and-monitor approach (not over-charging for unnecessary work), detailed reporting, and the way they stay in touch even after the job ends. No hidden upsells noted.
YMSG Service Group operates primarily as a commercial and residential cleaning service, not water restoration. Reviews describe professional, punctual work and clean results, but review evidence for the water-damage, flood-extraction, or mold-remediation services listed in this directory is absent.
Staff arrive within 30 minutes to an hour on emergencies and walk homeowners through damage and next steps. Work stays on schedule, invoices match quotes exactly, and crews keep daily photos and updates flowing. Mold, water extraction, sewage backup, and fire damage all handled with the same steady professionalism. Reviewers note transparent pricing, smooth insurance coordination, and thorough drying that leaves no lingering moisture or musty smell. The team explains what caused the damage and how to prevent it. One basement took less time than promised.
From the basement to the roof, people describe a team that answers fast and takes care as if the home were their own. The team, the team, and technicians like the team and the team earn consistent praise for clear communication, skilled cleanup and dehumidifying, and treating stressful flood situations with genuine professionalism.
First Response handles water damage, mold, and fire cleanup across Ottawa with strong technical expertise. Reviewers consistently praise rapid turnaround, detailed explanations, and staff who show genuine care during stressful situations. A few customers report getting disconnected after initial contact, though the overwhelming majority describe reliable follow-up and polished execution from project start to finish. The team delivers specialized services: mold remediation with lab testing, asbestos assessment, basement odour diagnosis, and post-damage deep cleaning. Many clients highlight that staff go beyond standard cleanup to repair structural damage, answer questions thoroughly, and send photo updates throughout jobs. One standout concern is responsiveness mid-project, where a customer lost weeks waiting to reconnect with their assigned contact.
All seven reviewers gave five stars. Customers highlight fast response times, clear communication, and work that goes beyond expectations. One homeowner noted the team discovered and removed mold while handling asbestos removal, finishing ahead of schedule and leaving surfaces ready for the next phase.
Every review praises Bachly's professionalism, organization, and follow-through. The team consistently delivers on promises and listens to client concerns, with particular praise for project managers who understand what homeowners need after disaster.
Fast response to water emergencies with skilled finishing work that blends seamlessly with existing interiors. One reviewer reported a billing surprise years later and a missed appointment, but the majority describe excellent professionalism and fair pricing throughout lengthy reconstruction projects.
Lacasse consistently delivers polished restoration and renovation work with reliable project oversight and clear communication. The team excels at complex jobs-water mitigation, fire cleanup, basement floods-and staff go beyond standard service to keep clients informed and to catch problems early. One complaint centered on a couch damaged during fire cleanup and unresolved for nearly a year despite promises.
Most reviews praise routine home cleaning, carpet work, and duct cleaning with reliable scheduling and friendly staff; many clients return year after year. However, two one-star reviews detail significant failures in smoke remediation, where promised duct cleaning proved substandard, work was incomplete, and follow-up visits did not resolve the problem. One review also reports missing items after a visit with dismissive management response.
Most reviewers describe exceptional results on cherished books, bibles, and documents, with praise for careful explanations and timely delivery. One significant 2021 complaint documents damage to a rare needlework book during repair, including worsened spine creasing, loose pages, and binding wear, with the reviewer noting the team became defensive when the issues were raised, though a partial refund was eventually offered.
Paul Davis Ottawa handles immediate water and fire damage work with sharp project managers and competent crews, but rebuilding jobs often stall, accumulate budget overruns, and leave items unfinished despite months of delays. Praise centres on responsive emergency coordinators and skilled demolition and extraction crews; complaints pivot to inadequate site supervision, poor subcontractor management, and unwillingness to remedy defects during long rebuild timelines. Homeowners who need fast water extraction or fire cleanup generally report smooth handoffs and professional crews. Those undertaking multi-phase rebuilds after major damage have experienced project stalling, permit compliance failures, and disputes over unapproved charges and liens when contracts hit friction.
One reviewer praised quick arrival and professional work on laundry room water damage. Review evidence is limited to a single 4-star account.
Most customers praise fast response, transparent estimates, and high-quality work, particularly for water damage, fire restoration, and asbestos removal. However, two significant 1-star reviews document mold remediation failures: one project dragged 7 weeks and cost over $40,000 before mold reappeared within a year, and another describes poor diagnosis leading to $3,000 in unnecessary repairs. These outlier complaints suggest inconsistency in diagnosis and long-term problem-solving, especially on complex mold jobs.
All three reviewers report prompt, transparent service and strong communication from staff. Work quality and follow-through on mould removal, water damage, and emergency calls earned consistent five-star ratings.
All seven reviews are five-star. Clients consistently praise punctuality, professional communication, and meticulous finishing work. Strong detail: the team cleans up after itself and stands behind work until the customer is fully satisfied.
Staff respond quickly to storm and water emergencies, guide homeowners through insurance claims, and deliver finished work that meets or exceeds expectations. One older complaint cited code violations, but 27 of 30 recent reviews praise the team's professionalism, communication, and quality across water damage, fire restoration, and structural repairs.
One reviewer had a serious printing glitch with a 90-page receipt; another praised a mold inspector for professionalism and clear explanations. Evidence is thin, but the business appears capable when staff show up, though administrative kinks need fixing.
Most recent reviews from the 2024 Ottawa Canada the team flooding praise Belfor for swift emergency response, courteous crews, and thorough cleanup. Older reviews reveal persistent complaints about management disorganization, slow follow-up, and delays that stretched months or years on projects, though frontline workers consistently performed well.
Most reviewers praise the team's technical expertise in mold and water damage work, owner responsiveness, and fair rates. One significant negative involved unclear communication on location, missed pickups, and a rug that returned unimproved, though the owner later offered refund and rework. Detail is thin on their 24/7 emergency response and sewage cleanup capabilities.
Most reviews praise responsive project managers and professional on-site crews who arrive quickly and keep customers informed. However, a significant number of one-star reviews detail serious problems with hired sub-contractors, incomplete repairs, and unresolved complaints that insurance had to escalate. The company's reputation is split between strong emergency response and project coordination versus inconsistent follow-through and accountability for damage caused during restoration.
One five-star review offers limited evidence; the business lists renovations and contracting on its website, though review feedback does not confirm experience with the water damage and restoration services shown in directory categories.
Good Call Restoration serves Ottawa's water, fire, and mold damage needs with a range of services including mitigation, restoration, and equipment rental. Review evidence is limited, with only 2 ratings split between top and very low scores; specific details about service quality are not available.
Not enough recent reviews yet to synthesise a reliable sentiment read for this business.
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Last updated 2026-08-12