Leak Detection & Repair • San Francisco Bay Area
Find the leak. Fix the damage risk.
San Francisco Plumbing Company locates hidden and visible leaks fast—then completes clean, code-aware repairs to protect your home and keep water bills in check.
- Clear communication & upfront recommendations
- Respectful, tidy work in finished spaces
- Residential & light commercial support
If you suspect a major leak or active flooding, shut off the main water supply and call right away.
Common signs you may have a leak
Some leaks are obvious. Others stay hidden until they cause staining, odors, or higher-than-normal water use.
Water stains & bubbling paint
Ceilings, baseboards, and drywall can show discoloration, swelling, or peeling.
Musty smells or mold
Persistent damp odors often point to moisture behind walls or under flooring.
High water bills
Unexplained increases can indicate a running fixture or a hidden supply-line leak.
Low pressure or noises
Pressure drops, hissing, or intermittent hammering can be leak-related.
Where leaks typically happen
We troubleshoot the most common leak points in Bay Area homes and buildings—then recommend the most practical repair path.
- Fixtures & valves: faucets, shower valves, toilet supply lines, angle stops
- Walls & ceilings: supply lines, drain connections, aging fittings
- Slab & subfloor areas: concealed piping and hard-to-see seepage
- Water heater connections: flex lines, T&P discharge, shutoff valves
Not sure what you’re seeing?
Describe the symptoms and where you notice moisture. We’ll help you decide the next step and schedule a visit if needed.
Our leak detection & repair approach
A structured process helps us locate the source, explain options, and complete repairs with minimal disruption.
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1) Listen & assess
We start with your observations (when it happens, where it shows, any recent work) and inspect visible plumbing.
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2) Pinpoint the source
We use practical detection methods based on the situation—targeted inspection, isolation testing, and non-destructive checks where possible.
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3) Recommend repair options
You’ll get a clear explanation of the cause, urgency, and the best repair path (repair, replacement, or rework of a connection).
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4) Complete the repair & verify
We repair the leak, test for integrity, and review next steps to help prevent repeat issues.
What you can do right now to prevent damage
If you see active leaking or water spreading, quick steps can reduce repairs and restoration costs.
Shut off water
Use the fixture shutoff if possible. If not, turn off the home’s main water valve.
Protect floors & belongings
Move items away from wet areas and use towels or a bucket to limit spread.
Document the issue
Take photos of visible damage and the leak area. Helpful for property records or insurance.
Leak repair FAQs
Can you help with documentation for insurance?
We can provide service notes and details about what we found and repaired. If you need specific forms or additional documentation, tell us what your adjuster requires and we’ll do our best to support it.
How long does leak detection and repair take?
It depends on access and the leak location. Some repairs are completed the same visit (like a valve or supply line). Hidden leaks may require additional time for access and verification testing.
Do you open walls or floors?
We aim for the least invasive approach possible. If access is required, we’ll explain why, what area is needed, and the options before proceeding.
Will you give an estimate before work starts?
Yes—after diagnosing the issue, we’ll review recommended repairs and pricing factors so you can approve the next step with confidence.
Stop a small leak from becoming a big repair
Call for leak detection and repair in San Francisco and surrounding areas. We’re based at 553 El Camino Real, South San Francisco, CA 94080.
Email: info@sfplumbingcompany.com