Best Plumbers in Hamilton
We assessed 18 plumbers in Hamilton and ranked the top 5 on public rating quality, review volume and how recent the reviews are. The businesses listed below hold 1,822 Google reviews between them. No business can pay for a place in these rankings. Last updated 16 September 2026. How we rank →
Before you hire
Plumbers in NZ must be registered with the Plumbers, Gasfitters and Drainlayers Board, whether you need an emergency call-out, a repair or a full installation. Check their registration before work starts, and make sure any gas work is carried out by a licensed gas fitter. Get a written quote that covers parts and labour.
Top 5 Plumbers in Hamilton
The top 5 plumbers in Hamilton are #1 Optiplumb, #2 JT Carter, #3 iPlumber, #4 KZN Plumbing, and #5 CJ Cant Plumbing, ranked by Top5 score. Scroll for our take on each, plus what to ask before you book.
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1
Optiplumb Ltd | Hamilton Plumbers
★ 5.0 465 reviews +21 Top5 Score 192 +15★ 450 4★ 12 3★ 2 1★ 1Optiplumb turns up for burst pipes, blocked sewer lines, hot water cylinder leaks, and insinkerator installs, including on weekends, public holidays, and late at night. Staff like Cameron, Connor, and Duncan are named for arriving within the hour on emergency jobs, keeping clients informed as work progresses, and resolving problems fully before leaving.
location_on 1/46B Northway Street, Te Rapa, Hamilton
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2
JT Carter Plumbers Hamilton
★ 4.9 426 reviews +15 Top5 Score 1895★ 379 4★ 42 3★ 2 2★ 1 1★ 2JT Carter gets plumbers to blocked drains, appliance repairs, and general plumbing faults within 24 hours when other local firms are quoting waits of up to four weeks. Named plumbers like Clayton, Moko, Mike, and Thomas call ahead before arriving, complete the work in a single visit where possible, and return the following day to finish anything that needs a second look.
location_on 282 Kahikatea Drive, Frankton, Hamilton
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3
iPlumber Limited
★ 4.9 221 reviews +2 Top5 Score 172 +15★ 203 4★ 13 2★ 3 1★ 2iPlumber covers toilet replacements, waste disposal units, tap and faucet work, laundry faults, and downpipe repairs, with same-day and next-morning slots available for urgent bookings. Plumbers like Shane and Ryan send photos with invoices and quote upfront from photos before arriving, so there are no cost surprises on the day.
location_on 8/232 Ellis Street, Frankton, Hamilton
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4
KZN Plumbing - Hamilton
↑ 1★ 5.0 120 reviews +2 Top5 Score 169 +25★ 114 4★ 6KZN Plumbing reaches clients within minutes for urgent work, covering burst pipes inside walls, blocked drains, galvanised pipe replacements, and hot water cylinder installs. Len walks through options and pricing before starting, and on jobs where the scope turns out to be more complex than expected, explains what he found and why.
location_on 17 Ravenscourt Place, Huntington, Hamilton
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5
C J Cant Plumbing Ltd
↓ 1★ 4.8 196 reviews Top5 Score 165 -35★ 169 4★ 19 3★ 1 2★ 2 1★ 5CJ Cant Plumbing resolves leaking water mains, blocked drains, cistern replacements, tap work, and laundry tub installations, with same-day attendance common across many jobs. Plumber Duncan is named across a wide spread of reviews for calling ahead, bringing the right tools, and advising on future pipe replacement so clients leave the visit with a clear picture of what comes next.
location_on 61 Colombo Street, Frankton, Hamilton
Before you book a plumber in Hamilton
Drawn from 188 customer reviews collected for this page. The first answer is what it costs.
What do plumbers typically charge in New Zealand? expand_more
Licensed plumbers in New Zealand charge between $80 and $150 per hour plus GST for standard work. A separate call-out fee of $80 to $150 plus GST is common on top of that.
Emergency or after-hours call-outs often cost $150 to $300 or more just for the call-out, before labour or materials. Hamilton rates sit toward the mid-range nationally, below Auckland and Wellington.
How do I check if a plumber is registered for the work I need? expand_more
The Plumbers, Gasfitters and Drainlayers Board (PGDB) maintains a public register at pgdb.co.nz where you can search any tradesperson by name or registration number before hiring them. Restricted sanitary plumbing, gasfitting, and drainlaying must legally be carried out or supervised by a registered practitioner under the Plumbers, Gasfitters, and Drainlayers Act 2006.
A Certifying Plumber holds the highest registration level and can sign off their own work, while a Licensed Plumber must have their work certified by someone at that higher level. Ask for the registration number before work starts and confirm it matches the correct name and licence type on the PGDB register.
What's the difference between a quote and an estimate for plumbing work? expand_more
A quote locks in the price for the agreed scope of work, so the tradesperson cannot charge more unless the scope changes and you approve the variation in writing. An estimate is an informed guess and the final bill can be higher, sometimes significantly, if complications arise.
Reviews highlight that transparent practitioners explain costs upfront, provide written quotes, and seek approval before proceeding when unexpected problems surface, such as finding a burst pipe inside a wall or additional blockages deeper in a drain. If a plumber gives you only a verbal estimate, ask for it in writing and confirm the process for notifying you before any extra work is carried out.
What are the warning signs of a plumber you shouldn't hire? expand_more
- –Sending a report days after a visit without proactive communication in the meantime signals poor follow-through.
- –Charging a fixed cancellation fee without showing you the actual costs incurred is a red flag on transparency.
- –Claiming a job is done when it has not been completed, then correcting it only after repeated follow-up, is a serious trust issue.
- –Quoting without GST stated clearly, then invoicing above that figure without explanation, suggests loose billing practices.
- –Slow turnaround on documentation, such as taking seven working days to produce a nine-line letter, points to disorganised administration.
- –Poor initial communication from reception staff handling technical questions can indicate the wider operation lacks systems to support customers effectively.
What should you ask before hiring a plumber? expand_more
- –Ask whether they are registered with the Plumbers, Gasfitters and Drainlayers Board (PGDB) and request their registration number so you can verify it at pgdb.co.nz.
- –Ask for a written, itemised quote rather than a verbal estimate, and confirm it includes GST and any call-out fee.
- –Ask what their process is if they discover additional problems mid-job, and confirm they will contact you for approval before doing extra work.
- –Ask about after-hours and weekend call-out rates separately, as these can be substantially higher than standard hourly charges.
- –Ask whether they will handle any required building consents or permits, as some jobs such as installing a wood burner or replacing a hot water cylinder involve compliance paperwork.
- –Ask whether they guarantee their workmanship and what the process is if a fault appears after the job is finished.
Also recommended plumbers in Hamilton
Ranked 6 to 10 on the same public review record.
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6
Proflow Plumbing Services
★ 5.0 88 reviews +1 Top5 Score 1615★ 88Proflow Plumbing covers bathroom renovations, hot water cylinder replacements, toilet installs, blocked drains, and hard-to-find water leaks, including jobs where multiple other plumbers have already attempted and failed. Jared brings specialist leak detection equipment, including infrared thermal imaging and acoustic underground detectors, that most plumbers do not carry, and follows up jobs with maintenance recommendations so clients know what to plan for next.
location_on 29 Hockly Road, Rotokauri, Hamilton
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7
Hamilton Plumbing
↑ 1★ 4.9 91 reviews +9 Top5 Score 159 +25★ 83 4★ 5 3★ 2 1★ 1Hamilton Plumbing fixes hot water cylinder leaks, bathroom leaks, water main breaks, and pressure problems, including jobs in tight under-floor spaces that take real effort to access. Named plumbers like Max, James, JP, and Ash are each noted for working quickly, talking clients through what they find, and leaving sites tidy on completion.
location_on 7 Peregrine Place, Frankton, Hamilton
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8
Soda Plumbing - Hamilton Plumbers
↓ 1★ 5.0 80 reviews +2 Top5 Score 157 -25★ 78 4★ 2Soda Plumbing is the team to call when the job needs to happen today, with burst copper pipes, blocked drains, and bathroom renovation work all completed within hours of the first phone call. Named plumbers like Rhys, Luke, Warren, and Reece show up on time, sort the problem without fuss, and leave clients with no need to chase.
location_on 405 Borman Road, Flagstaff, Hamilton
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9
C F Reese Plumbing and Electrical - Waikato
↑ 1★ 4.5 90 reviews +4 Top5 Score 154 -15★ 77 4★ 1 3★ 1 1★ 11CF Reese takes on burst gas cylinders, blocked drains, water leaks, kitchen tap replacements, heat pump hot water cylinder installs, and water filtration systems across residential and commercial sites. Named plumbers like Sam, Duncan, Brad, and Josh are each flagged for turning up promptly, presenting options before starting, and staying on a problem until it is fully resolved.
location_on 32 Euclid Avenue, Te Rapa, Hamilton
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10
Pipe Masters Waikato
↓ 1★ 5.0 45 reviews +1 Top5 Score 153 -15★ 43 4★ 2Pipe Masters covers blocked drains, toilet replacements, insinkerator installs, soak holes, and drain pipe work across both residential and new builds. Named plumbers like Richard, Elijah, and Hayden are flagged for arriving on time, explaining drain layouts and options clearly, and returning on public holidays to keep projects on schedule.
About this ranking
What the 10 plumbers listed above hold, at the 16 September 2026 check.
We first assessed plumbers in Hamilton in March 2026 and have rechecked the ranking four times since. Optiplumb has held first place at every check, and JT Carter, iPlumber and CJ Cant Plumbing have been in the top 5 alongside it throughout. Across the 14 locations we assess plumbers in, the 140 businesses listed have a median rating of 4.9, and one-star reviews are 2.7% of their total.
What has changed since March 2026? expand_more
- Aug 2026
Scoring method updated. Pipe Masters and CF Reese entered the list, at #9 and #10.
- Apr 2026
Scoring method updated. KZN Plumbing entered the top 5, up from #7. Proflow Plumbing left the top 5, down to #7.
- Mar 2026
First check. Optiplumb #1.
Latest check, 16 September 2026: no change to the top 5. Months where nothing changed at the top are not listed.
How are the top plumbers in Hamilton chosen? expand_more
We build this page from Google Maps results for plumbers in Hamilton. Each one is scored on its public rating and review record. Businesses outside the area, or whose reviews describe a different line of work, are left out, and a business whose main Google category is a different trade is held back until a person has checked what it does. A business whose website no longer resolves and that has had no Google review for six months is treated as dormant and left off the page until either changes. Every category and city is rechecked on a rolling cycle, about every two to three months. A location with a subscribing business is rechecked every month, and the whole page updates with it. See how we rank for the full method.
What does a business subscription offer? expand_more
No business can pay for a place in these rankings. Claiming and verifying a listing is free. It adds a phone number to the card and a small trust bonus (+3 points) to its score, for confirming a real operator stands behind the listing. The owner also gets a dashboard showing how their score is made up. A paid subscription provides an enhanced card with more ways to reach the business, including a website link and a detailed profile page. It also refreshes this page monthly and adds ranking history and competitor analysis to the owner's dashboard. The subscription adds nothing to the score. Claim your listing or see what a subscription includes.
Why isn't my business listed? expand_more
We build this page from Google Maps results for plumbers in Hamilton. The usual reasons for missing out are a Google Business category that does not match, too few reviews to score near the top, or an address outside the area we cover. Sometimes we miss a business that should be here. Check where you rank first. If you are not there and think you should be, get in touch.