
First Onsite arrives quickly to ice storms, floods, and fires, often within an hour of the call. Staff walk homeowners through each step, handle insurance details without hassle, and ensure property protection and daily cleanup throughout the job.
the team pipes, overflowing tanks, and storm flooding don't wait for office hours, which is why 24/7 emergency response is its own category here rather than an add-on. This covers the first call you make when water is actively spreading through a property: emergency callout, extraction, and making the site safe, usually followed by drying and repair work once the immediate crisis is handled. We've identified 19 businesses across London offering this kind of round-the-clock cover.
A genuine 24/7 operation should have a real person answering calls at 3am, not a voicemail, and a technician on site within an hour or two for serious cases. On arrival, that means stopping the source of water where possible, pumping or wet-vacuuming standing water, assessing how far moisture has travelled into floors and walls, and setting up dehumidifiers or air movers. Anything involving contaminated water (sewage backup, flooding from outside) needs proper containment and disposal too, not just a mop and a fan.
Look for a stated response time (not just "24/7" as a slogan), moisture-mapping equipment rather than guesswork, and clear communication about what happens after the emergency visit, including how they work with your insurer. Our ranking weighs actual response speed, equipment and certifications, and how businesses handle the full job from callout to drying, not just marketing claims. See the full breakdown and scoring criteria at our methodology page, and compare all 19 providers side by side in the ranked guide to London's best water damage restoration services.
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19 businesses, scored on recent reviews. The order weighs each business's overall score by how much of its reviewed work is 24/7 emergency response, so a lower-scored specialist can rank above a higher-scored generalist.

First Onsite arrives quickly to ice storms, floods, and fires, often within an hour of the call. Staff walk homeowners through each step, handle insurance details without hassle, and ensure property protection and daily cleanup throughout the job.

Early morning calls get answered by management; crews arrive within 20 minutes to an hour for basement floods, and water extraction is followed by full documentation for insurers. Reviewers note the team walks them through every step and keeps them updated as work progresses from drying to floor replacement and painting, with final results that look professionally finished. The business handles the whole chain: water removal, structural drying, mould remediation, and reconstruction (flooring, baseboards, repainting). Pricing is described as fair and reasonable for the scope of work, though some pay a $250 assessment fee. Crews show respect for the home and its contents, and the owner or manager often comes out personally for complex jobs.

Reviewers consistently report same-day or next-day arrival, with staff who diagnose problems clearly and complete work without leaving mess. The team's honesty stands out: they explain options plainly, refuse to oversell, and fix mistakes (like accidentally broken pipes) immediately. Across Canada handles flood extraction with industrial dehumidifiers and large fans, mold assessment and remediation, ice dam removal, roof work, and sump pump replacement. Staff named include the team and the team, both praised repeatedly for reliability and care. One reviewer called them "the best job in Canada" for responsibility and punctuality.

Fast, professional response and expert guidance through water damage and fire restoration. Mo and his team consistently help homeowners navigate insurance approval, complete mitigation work quickly, and restore property to like-new condition. Reviews highlight thorough assessment, clear communication, and work done ahead of schedule.

Staff arrive within 15-45 minutes of a call, treating water, fire, and flood damage with hands-on care. Reviewers consistently mention being checked on for weeks after work ends, getting honest advice even about unrelated problems, and experiencing no-nonsense professionalism from assessment through renovation. The team manages contractors, handles insurance coordination, and explain each step clearly so homeowners understand what's happening.
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Most customers praise the team for rapid response, transparent updates from start to finish, and skilled handling of water and wind damage. Staff coordinate directly with insurance, reducing stress during recovery. However, three reviewers reported steep demolition bills that depleted their insurance settlements, leaving little for repairs, and cited concerns about scope creep, unfulfilled promises, and pressure to pay for emergency charges.

London Extreme Clean earns consistent praise for speed and professionalism across challenging jobs: mold removal, trauma cleanup, and odour elimination. Reviewers often name the team by role, noting both technical skill and genuine compassion during difficult moments. Two complaints document missed callbacks on rental and service inquiries, a notable gap in an otherwise responsive operation.

Customers consistently praised DKI - Lubnow for arriving within hours of water damage, basement floods, and fire damage emergencies. Staff managed insurance claims directly, kept people informed daily, and completed work on time and to specification. Reviewers noted the team worked around tenant schedules and handled supply chain delays without blame.

All seven reviews awarded five stars, consistently praising rapid emergency dispatch, transparent step-by-step communication, and polished workmanship across water damage, mold remediation, and restoration projects. Staff arrived quickly to basement pipe bursts, ceiling leaks, and mold discoveries, assessed damage thoroughly, deployed equipment promptly, and left homes clean and restored on schedule.

Reviewers consistently report fast, professional mold removal with transparent pricing and detailed photo documentation. Work often finishes ahead of schedule and leaves properties clean; one complaint cites unresponsive phone lines and confusion between two similarly-named companies.

Reviewers across water damage, mold, and fire calls report arrival within 40 minutes to an hour, with crews that work efficiently and update them throughout. One recent complaint alleges flooding caused by the company itself with no follow-up. Staff handle basement floods, attic mold, kitchen water damage from appliances, and fire aftermath. The owner personally checks in on jobs. Drying equipment stays on-site for full remediation.

All four reviewers praised fast arrival times and professional handling of late-night water emergencies. The team used equipment like blowers and dehumidifiers, tracked drying daily, and explained each step clearly.

Most jobs completed to high standard with staff who arrive promptly and work around children and pets without mess. Four reviews mention concerns about communication delays and one instance of a no-show years ago, but recent jobs show consistent speed and care.

Strong emergency response and project coordination have won over many customers, particularly those facing major floods and fires. The team, the team, and other named project managers earned consistent praise for responsiveness and attention. However, pricing complaints surface repeatedly-reviewers report 50% markups and hidden fees that feel opportunistic during crisis situations. Service quality varies sharply by crew: some deliver immaculate work and keep properties clean; others leave jobs only partially finished or conduct themselves unprofessionally on-site. The 3.8-star rating reflects this split, with nearly two-thirds five-star reviews offset by a substantial block of one-star accounts.

Every reviewer praises speed and professionalism. Staff arrive quickly during floods, complete work cleanly, and communicate clearly throughout. Reviewers trust the owner's character and return because results match promises.

Strong technical performance on water, fire, and flood damage mitigation, with crews praised for professionalism and attention to detail. However, serious concerns arise from multiple reports of aggressive driving by marked company vehicles and at least one complaint of sloppy workmanship, long delays, and unfinished repairs after years of waiting.

Five-star reviews highlight fast response times, clean job sites, and capable crews who handle water damage and fire restoration with respect and care. Two one-star reviews describe extended timelines, poor finishing work, unfinished repairs, and inadequate materials handling on sewage backup jobs, leaving customers frustrated despite insurance payments. Most recent projects show consistent professionalism: teams bring protective covers, deploy equipment promptly, coordinate subcontractors quickly, and maintain open communication. However, isolated cases reveal inconsistency in workmanship quality, particularly in post-damage finishing and material accountability.

Staff respond quickly to floods and water damage, handle extraction and drying, and keep homeowners updated throughout. Multiple reviewers praise the quality of restoration work and the personal care shown by the owner and team, particularly when handling complex jobs like mold removal or asbestos cleanup.

Review evidence is limited. The business claims over 15 years of operation and IICRC the team Water the team certification. Service area spans London, Essex, Dorchester, Stratford, and surrounding towns.
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Last updated 2026-08-12