4.9/5 — 2,000+ Five-Star Reviews
Water Leak Detection & Repair
in the Bay Area
United HVAC, Plumbing & Electrical provides water leak detection and repair throughout the Bay Area. We locate the source of hidden leaks and repair damaged pipe sections in walls, ceilings, slabs and underground water lines.
Our licensed plumbers diagnose the problem, explain the repair options and complete the work with as little unnecessary opening or excavation as possible.
- 25+ Years
- Licensed & Insured
- 24/7 Emergency
4.9/5 Rating
2,000+ Reviews
Licensed & Insured
CA Licensed
Same-Day Service
24/7 Emergency
25+ Years
Bay Area Experts
6,000+
Jobs Completed
Simple Process
How It Works
Call Us 24/7
Reach us anytime at
(408)539-6936.
Same-Day Dispatch
A licensed technician arrives at your home, often same day.
Diagnose & Fix
Upfront pricing before work begins. No hidden fees, ever.
100% Satisfaction
We stand behind every job with our satisfaction guarantee.
From Leak Detection to Pipe Repair
Once the source of the leak is identified, the next step is exposing the damaged section and choosing the appropriate repair. We limit access to the area needed to confirm the failure, then repair or replace the affected pipe section and test the system before the job is completed.
The right repair depends on the location and condition of the pipe. A localized failure may only require a targeted section replacement, while recurring leaks, widespread corrosion or a damaged underground line may require rerouting or replacing a larger section of piping.
Water Leaks We Repair
- Pipe leaks inside walls and ceilings
- Slab and foundation leaks
- Underground water line leaks
- Failed fittings and pipe connections
- Corroded copper or galvanized pipe sections
- Localized leaks in PEX supply lines.
Water Leak Repair: How We Fix What We Find
Once the source of the leak is confirmed, the repair method depends on the location of the damaged pipe, the pipe material and the overall condition of the plumbing system.
For a localized failure, we can replace the damaged pipe section, fitting or connection and test the system after the repair. For leaks beneath a slab or underground, we evaluate whether a targeted repair, reroute or replacement of a larger section is the more practical option.
When a Spot Repair Is Enough
A targeted repair usually makes sense when the failure is isolated and the surrounding pipe is still in good condition. This may include a damaged fitting, a short corroded section or a localized pipe failure inside a wall or ceiling.
When Repiping Makes More Sense
If we find recurring leaks, widespread corrosion, multiple pinhole failures or deteriorated piping in several areas, replacing a larger section of the system may be more practical than continuing to patch individual leaks.
Leak Detection and Repair Cost in the Bay Area
Detection and Access Costs
The cost of locating and accessing a leak depends on where the damaged pipe is located and how difficult it is to reach.
- Wall or ceiling access: $200–$500
- Underground excavation to expose a water line: $500–$1,500
Finished surfaces, tile, landscaping, pipe depth and accessibility can increase the amount of work required.
Common Water Leak Repair Costs
- Pipe section replacement inside a wall or ceiling: $300–$700
- Slab leak reroute: $1,500–$3,500
- Underground water main segment replacement: $1,500–$4,500
These are typical ranges rather than fixed quotes. Final pricing depends on the pipe material, location of the leak, access requirements, repair method and any restoration or permit work required.
If the source of the leak has not yet been confirmed, see our water leak detection service.
Suspect a hidden leak in your Bay Area home? Call United HVAC Plumbing and Electrical at (408)539-6936 for same-day leak detection and repair in San Jose, Santa Clara, Cupertino, Palo Alto, Menlo Park, and surrounding South Bay communities.
100% Satisfaction Guarantee
If you're not completely satisfied with our work, we'll come back and make it right — free of charge. That's our promise to every customer.
Signs You Need Water Leak Detection & Repair
Why Choose United HVAC
Got Questions?
Frequently Asked Questions
Once the leak is located, we expose only the area needed to access the damaged pipe. The repair may involve replacing a fitting, a short pipe section or rerouting part of the line, depending on the location and condition of the plumbing.
In many cases, yes. Leak detection helps narrow down the affected area so access can be limited to the section needed to confirm and repair the damaged pipe.
A spot repair addresses one isolated failure. Repiping replaces a larger section or multiple sections of the plumbing system and may be more appropriate when leaks are recurring or the pipes show widespread deterioration.
Many localized pipe repairs can be completed within one working day. Slab leaks, underground lines or projects requiring rerouting, excavation or restoration may take longer.
Cost depends on the location of the leak, access requirements and the repair method. Simple wall or ceiling repairs generally cost less than slab or underground water line repairs. We confirm the recommended repair and pricing after diagnosing the problem.
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Explore Our Other Services
Serving the Bay Area
Water Leak Detection & Repair Available In
We proudly serve homeowners across the entire Bay Area
Don’t see your city? Call (408)539-6936 to check availability.