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Our leak detection process is designed for accuracy, clarity, and reliability — from initial assessment and system review to targeted detection and clear reporting. We focus on identifying leak sources, documenting contributing factors, and providing objective insights to support informed decisions.
We begin with a detailed assessment of the property, reviewing visible areas for signs of water intrusion such as staining, dampness, or unexplained moisture. Our inspectors assess walls, floors, ceilings, and accessible plumbing areas to identify conditions that may indicate hidden leaks.
Leak detection often requires understanding plumbing layouts and environmental conditions. We review pipe locations, fixtures, water lines, pressure indicators, and surrounding materials to identify areas more prone to leakage or failure.
When appropriate, we perform targeted leak detection using industry-approved, non-invasive tools. Detection locations are selected based on assessment findings to accurately identify active or potential leak sources without unnecessary damage.
Advanced leak detection and moisture assessment coordination using non-invasive methods and calibrated equipment to help accurately identify hidden water intrusion within residential and commercial properties.
Collected detection data and observations are reviewed to confirm leak presence, location, and potential contributing factors. This step helps establish a clear understanding of current conditions and whether water intrusion may be ongoing.
We review the findings and provide a clear leak detection report outlining observations, detected leak locations, and relevant insights. Our goal is to help property owners understand the situation and consider appropriate next steps — without obligation for repair services.
A professional leak detection process provides accurate insight into water intrusion issues and helps reduce uncertainty before damage escalates.
Know a homeowner, property manager, or business dealing with water damage, flooding, mould, storm damage, or another property emergency? Refer them to our team and earn rewards for qualified projects.
Whether you’re a returning client, property manager, or insurance professional, we offer preferred pricing as part of our long-term service relationships.





Water leaks are not always visible and can develop gradually over time. Hidden leaks behind walls, beneath flooring, or within plumbing systems can lead to water damage, material deterioration, and increased moisture-related concerns. Timely leak detection helps identify leak sources early and supports informed decisions before damage escalates.
Professional leak detection provides clear insight into water-related conditions and helps protect properties from escalating damage over time.
Posted on Gord PalbodTrustindex verifies that the original source of the review is Google. outstanding crew. thank you for an excellent job to Farzam and his crew.Posted on Khadijeh ChoupanTrustindex verifies that the original source of the review is Google. Thank you for an excellent job Majid. All that terrible cigarette smell and now it's all gone. It was like majic, Majid. Thank you. Thank you.Posted on Deb PyneTrustindex verifies that the original source of the review is Google. I had googled for heavy duty cleaning that was needed for my Brother, (has some physical issues) I supplied them with pictures. They sent me a quote & the job was scheduled immediately as it was time sensitive. I met the GTA Gentleman @ the front door of my brother’s condo. They went straight to work & did such an amazing job. I was thrilled with the out come as it was a big job. I would definitely recommend them to anyone!! Very professional, friendly & very respectfulPosted on Amin HamediTrustindex verifies that the original source of the review is Google. The 247-365 Restoration team responded quickly, arrived on time, and immediately took control of the situation. They were professional, well-organized, and clearly experienced in flood cleanup. Everything was explained step by step, and the cleanup was handled efficiently and carefully. A trustworthy choice for emergency water damage and flood restoration services.Posted on Sikander KanjiTrustindex verifies that the original source of the review is Google. Amazing experience, very professional, clean work, helpful and amazing crew.Posted on Tiana RoseTrustindex verifies that the original source of the review is Google. Nijen's team replaced and build a privacy wall on our back deck last Friday. They were professional, and efficient and we couldn't be happier with the end result. Thank you to Nijen and his team. We would definitely hire them again for our renovation needs and recommend them to everyone. TianaPosted on Mathew WhiteTrustindex verifies that the original source of the review is Google. I engaged First On Site as a preferred vendor through my insurance provider following an unsatisfactory experience with another restoration company. Understandably, I approached the process with some hesitation. From the outset, the team at First On Site demonstrated exceptional professionalism. They maintained clear and consistent communication, keeping me informed of all timelines and progress updates. Their responsiveness and attention to detail far exceeded my expectations. Upon arrival, the crew began work immediately and remained focused and diligent throughout the day. Their efficiency, professionalism, and respect for my property were commendable. Additionally, the team effectively liaised with my insurance company, ensuring the scope of work was completed exactly as described and to a high standard. I would not hesitate to recommend First On Site to anyone requiring disaster management or restoration services. Their commitment to quality and client satisfaction is truly exemplary.Posted on siddharth khannaTrustindex verifies that the original source of the review is Google. I called them at 7 am for an emergency basement pipe burst leakage and they sent out a crew within a couple of hours who knew exactly what needed to be done. They documented the damage thoroughly for insurance purposes and I faced no trouble. The team at GTA are professional and helpful. Totally recommend!Posted on Mark EsdaleTrustindex verifies that the original source of the review is Google. After a ice storm related basement flood the GTA team showed us what service meant!. They were here very quickly, with the proper drying equipment and some great staff members. They removed old carpeting/under padding and the bottom 12 inches of drywall from the affected flood area, installed and left drying machines, were back in a week to repair the drywall. We could not have asked for a better job, very glad we chose them.
Guaranteed on-site arrival within 45 minutes of your call, day or night.
Certified restoration, environmental inspection, & property assessment.
Fast scheduling available across the GTA, and Southern Ontario.
Professional documentation and support for insurance-related claims.
Honest, upfront pricing with no hidden fees or surprise charges.
Serving Toronto, the GTA, and Southern Ontario for 25+ years.
With over 25 years of hands-on experience and more than 6,000 completed projects, we provide professional water leak detection with transparent pricing, detailed inspections, and accurate diagnostic analysis. Our experienced inspectors carefully assess hidden leaks, moisture intrusion, and affected building materials to deliver reliable findings and clear documentation you can trust.
Clear & Transparent Leak Detection Pricing
Accurate Assessment & Lab-Based Leak Detection
Experienced Leak Detection Professionals
Our water leak detection team works efficiently to identify hidden leaks and moisture intrusion, document findings, and help property owners better understand potential water damage risks within residential and commercial properties.
Clear answers to common questions about professional leak detection services, inspection methods, timelines, and what to expect during the assessment process.
Yes. We offer professional basement moisture assessments focused on identifying dampness, moisture conditions, and contributing environmental factors.
Signs such as musty odours, visible damp areas, condensation, or concerns about humidity may indicate the need for a moisture assessment.
Most assessments are completed within a short on-site visit, depending on basement size and conditions being evaluated.
Yes. Our moisture detection methods are non-invasive and safe for occupied residential properties.
The process includes visual assessment, moisture measurement using approved tools, evaluation of basement conditions, and clear documentation of findings.
Early moisture detection can help identify contributing conditions and provide clarity before moisture-related issues become more complex.
If you’re noticing unexplained water damage, rising moisture levels, unusual water usage, or signs of a hidden leak, professional leak detection can help provide clarity. Our inspection-focused service is designed to locate leak sources accurately, document findings, and deliver clear results to support informed repair decisions — before damage escalates.
Serving Toronto, the GTA, and communities across Southern Ontario with rapid response restoration, waterproofing, and emergency property services when and where you need them most.