Had a leakage with shower head and found them on Thumbtack. They came out same day and fixed it the same day too! Explained the issue very well and offered multiple options for repair. Highly recommend
Yaoqi Dong
Jun 21, 2025
Available for Booking
Leak Detection & Repair in San Mateo, CA
Professional leak detection and repair for San Mateo homes and businesses. We find hidden pipe leaks, slab leaks, and fixture drips with minimal disruption.
- 60 Years Combined Experience
- Licensed & Insured
- Emergency Service
- Transparent Pricing
+2500
5.0 RATING
TRUSTED BY OVER 2500+ HOMEOWNERS Get your free estimate and schedule today!
Leak detection in San Mateo
Hidden leaks spike water bills and cause mold. We locate leaks with minimal disruption. Our licensed technicians serve San Mateo and nearby Bay Area communities with upfront pricing and quality workmanship.
Why San Mateo homeowners choose us
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Licensed & insured
Every job is completed by licensed plumbers with full liability coverage.
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Find hidden leaks
We locate slab leaks, pipe leaks behind walls, and fixture drips with minimal disruption.
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Upfront pricing
We explain the problem and quote before work begins — no surprise charges.
Trusted leak detection in San Mateo
Schedule service in San Mateo today. Use our contact form or call for a free estimate on leak detection.
Customer reviews
Leak Detection & Repair services reviews near San Mateo
We had two leaky sinks in our house and called ASAP to fix the problem. Kong arrived and quickly assessed the situation. After discussion with both Kong and Donald, we concluded that the repair for the basement sink would not be necessary. Kong fixed the kitchen sink in a timely and professional manner. I would highly recommend ASAP for your plumbing needs. They provide fast, professional service at very reasonable rates. I also like how they provide a one year service warranty.
Karen H
Jan 12, 2025
Quick and responsible service. Don checked and repaired our leaky sink and water faucet adapter the same day that I called for the service. The work was professionally performed with proper cleanup afterward. I also like the fact that he wore shoe covers inside the house without the need for me to ask him to do so. Great work!
Jonathan
Dec 22, 2023
Don has done work on our home two times; fixing leaks in two bathrooms in our home. He quickly assessed the situation, provided details and options for addressing the leaks. He repaired the leaks quickly due to having the parts available in his truck (no need to run to get parts). We also just like Don - he's friendly, professional and shoots straight. Thanks, Don!
Aaron Dence
Jun 25, 2023
Don was able to come out next day to fix a leak. He was super quick to diagnose the issue, recommend a repair, and follow through with it right away. Pricing is a great value, and we’ll definitely use his business again!
Joyce Khoury
Jun 12, 2023
Don came over to fix a leak under our sink within 3 hours of reaching out to him. He was able to make a repair on our disposal rather than replacing the whole thing to keep the costs down. He was very friendly and helpful. Would be happy to use his services again in the future!
Jason Jasinski
Mar 16, 2023
I’ve used Drain Dr Don a few times for various plumbing needs: clearing blockages, repairing leaks. They are very responsive, no BS, professional, properly priced. I highly recommend their services when you have a plumbing emergency.
Bruce Johnson
Feb 18, 2023
Call Don! We had a leaking pipe underneath our kitchen sink and had no idea where the leak was. Don diagnosed the issue and had all the materials ready to go. Very pleasant experience and would definitely call him again!
John Ruan
Jan 18, 2023
Leak Detection & Repair in San Mateo
When you need reliable leak detection & repair in San Mateo, ASAP Plumbing Pros delivers fast, professional results. Our licensed technicians arrive equipped to diagnose the problem, explain your options, and complete the work with upfront pricing.
Serving the Bay Area
We proudly serve San Mateo and communities throughout San Francisco and San Mateo County. Whether it is an emergency call or a scheduled appointment, you get the same commitment to quality and customer satisfaction.
Schedule service today
Use our contact form or call (415) 728-6391 to request leak detection & repair in San Mateo. We are open 24/7 because plumbing emergencies do not wait.
Frequently asked questions
How quickly can you help with leak detection in San Mateo?
Active leaks get priority to limit damage. Call for emergency availability.
Do you offer same-day leak detection in the Bay Area?
Detection appointments are often available within 1–2 days.
What does leak detection cost in San Mateo?
Detection pricing depends on property size and leak type.
Other Leak Detection & Repair Areas We Serve
Ready for comfortable service?
Call (415) 728-6391 or request service online.