How to Hire a Good Plumber: A Complete Checklist
August 5, 2026 · 3 min read
Most homeowners hire a plumber the same way: they search "plumber near me," call the first result with a decent star rating, and hope for the best. That works fine for a leaky faucet. For anything bigger — a repipe, a water heater replacement, a sewer line issue — a bad hire costs real money to undo. Here's what to check first.
1. Verify the license, not just the badge
Every state licenses plumbers differently, but nearly all require one for anything beyond basic fixture swaps. Ask for the license number directly and look it up on your state's contractor licensing board website — most have a free public search. A plumber who hesitates to give you this number is telling you something.
2. Get three quotes, not one
Plumbing quotes for the same job routinely vary by 2-3x between companies. Get at least three written estimates before committing to anything over a couple hundred dollars. If one quote is dramatically lower than the others, ask why — sometimes it's a leaner operation, sometimes it's a bid that balloons once they've started tearing out drywall.
3. Check reviews on more than one platform
A business can curate its Google reviews (asking happy customers, going quiet after a bad one) more easily than its presence across Google, Yelp, and the Better Business Bureau simultaneously. Look for consistency across at least two platforms, and read the 2- and 3-star reviews specifically — they're usually more informative than the 5-stars or the 1-stars.
4. Ask what the warranty actually covers
"We guarantee our work" means nothing without specifics. Ask directly: how long is the labor warranty? Does it cover parts too, or just installation? Is it prorated after the first year? Get the answer in writing, not verbally on the phone.
5. Ask about after-hours rates before it's an emergency
Emergency call-out rates can be 1.5-2x standard rates, and some companies don't disclose this until they're already at your door. If you're choosing a plumber to keep on file for future emergencies, ask about their after-hours pricing structure now, when you're not desperate.
6. Get the scope in writing before work starts
A one-line estimate ("fix leak — $250") leaves too much room for scope creep once the wall is open. A written scope should specify what's being repaired or replaced, what happens if they find additional damage, and whether that additional work requires your sign-off before they proceed and bill for it.
None of this takes more than 15-20 minutes of phone calls and looking things up. It's the cheapest insurance you'll buy against a bad plumbing job.