From a dripping faucet to a slab leak, a good plumber in Sunnyvale shows up when promised, explains the fix and leaves the price where the estimate put it. Licensed plumbers handle water heaters, drains, gas lines and repipes.
Picked by people who read the reviews.
Our review committee researched plumbers serving Sunnyvale and the surrounding area, read consumer reviews across the web, and settled on these five. We look at how many people have reviewed a company, what they say, and how the company holds up over time. We keep the full recipe to ourselves so it cannot be gamed. Google ratings shown are as of November 9, 2026. No company paid to be here, and none can. More on how we choose →
How to hire a plumber in Sunnyvale
Check the state plumbing license number and that it is active.
Ask whether the quote is flat-rate or hourly, and what the trip charge is.
For big jobs like a repipe or sewer line, get a second bid.
Confirm they pull permits when the city requires them.
Plumber questions, answered
When is a plumbing problem an emergency?
Water you cannot shut off, sewage backing up, a gas smell or no water at all. Shut the main valve, then call. Everything else can usually wait for a regular appointment.
How often should a water heater be replaced?
Tank water heaters last about 8 to 12 years. Tankless units can last 20 or more with annual flushing.
Should I use a drain cleaner before calling?
Chemical cleaners can damage pipes and seals. A plunger or a hand auger is safer. If a drain clogs repeatedly, there is a deeper problem a plumber should look at.
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