“Communication and punctuality were excellent, and we are very happy with the results.” · NoCowboys, 27 Mar 2024
“His team communicated clearly and in a timely manner, and cleaned up thoroughly at the end of each day.” · NoCowboys, 28 Apr 2021
Public evidence profile
Complex Plumbing Ltd
How quickly they respond
respond within 24 hours
Companies Office
Active incorporated business
No Trust Score yet
- Rated 5.0 from 113 reviews
- Reviewed 4 months ago
How this score is worked out
Rating5.0 / 5
Review volume113
Independent sources1 independent public source
CredentialsNo credentials shown yet
Response evidence
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Public response evidence
How quickly they respond
What their website advertises:
- respond within 24 hours
- "our team will respond within 24 hours!"
Use this as a reason to call them first, not a guarantee they can attend now. Confirm availability, timing, and call-out terms directly before you rely on it.
From customer reviews
What customers consistently say
Recurring themes from 79 customer reviews on NoCowboys.
Customers who keep coming back: “I contacted Jason to come do some plumbing work during our renovation, moving our entire water system and kitchen fit out.” · NoCowboys, 24 Feb 2021
Respectful and tidy in your home: “The whole team is super professional, the workmanship was standout, they don’t take short cuts, and the team were very polite and so clean, taking shoes off in” · NoCowboys, 22 Aug 2022
“Jason has worked for me on various projects for about 6 years , He always work on schedule and he is very reliable and professional .” · NoCowboys, 20 Jun 2023
“Nathan was such a reliable and thoughtful person. He'd deliver what he'd said.” · NoCowboys, 12 Jul 2018
Companies Office registration
ActiveActive incorporated business
Complex Plumbing Ltd is linked to a Companies Office entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameComplex Plumbing Ltd
Company number6030507
IncorporatedNot listed
Official checkOn the public register
Why this helps you judge trust: this tradesperson is linked to a registered company with named people who are legally accountable for it, on an official register anyone can check, a layer of accountability an unregistered tradesperson doesn't offer.
Source-listed gallery
28 photosPhotos listed on NoCowboys
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
Reviews · public evidence
What customers say
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Customers often mention
Where these reviews are published
- NoCowboys113 reviews · 5.0 avg
Highlights
“Nathan has done a good job of replacing our old toilet. Nathan is a polite and professional plumber. He went a few times to the store and did some research to find the right size and style toilet. The finished work is beautiful. No gaps of the new pan on the floor. That saved us getting a floor repairer to fill any gaps. Very grateful for his professional service. Highly recommend to anyone who needs a plumber's service. Thank you so much Nathan!”
“I highly recommend Complex Plumbing. We had a stressful leak, and Jason responded immediately with clear, expert guidance. What stood out was his honesty. Rather than guessing, he advised proper leak detection to identify the issue accurately. Once confirmed, he completed the repair efficiently and to a high standard. It is rare to find someone who combines strong technical skill with a genuine commitment to doing the job properly. Jason is prompt, reliable, and consistently delivers”
“I’d like to express my sincere gratitude to Nathan for the outstanding installation of my new water heater. It’s not often you come across a specialist who combines so many important qualities: punctuality, precision, professionalism, and a broad skill set. From the very beginning, it was clear that Nathan is someone who truly knows what he's doing. He arrived right on time, carefully and quickly dismantled the old water heater, assessed the new setup, and got to work without delay.”
Detailed reviews
These are the individual reviews we hold for Complex Plumbing Ltd, including the highlights above. The 113 headline total is the review volume reported across public review sources.
Cant say enough - excellent, prompt service. A fantastic lad to deal with.
Best person I have met for the services related to gas plumbing. Thanks for your services You made our life easier.
Nathan is one of my favorite plumbers, he is hard working and always does a great job, I haven't had a remedial yet after his workmanship. Nathan is not only a great plumber but a good and honest person. I would recommend him for all of our hot water installations.
Nathan was fantastic. Professional hardworking and explained the do’s and dont’s of the cylinder.Had to work in a very tight space but a incredibly tidy job.This young man takes pride in his work.Thank you Nathan
We needed a few bits of plumbing work done, including tracking down and fixing an intermittent water hammer. Jason turned up promptly to provide a detailed quote, and once accepted Daniel came to do the work. Communication and punctuality were excellent, and we are very happy with the results. Jason and Daniel were a pleasure to deal with, and did an excellent job. I would highly recommend this compant\y.
Read the other 10 detailed reviews on this pageShow fewer reviews
Nathan did a fantastic job of a very awkward situation. He went out of his way to help us and nothing was too much trouble. His communication skills were superb as was his time keeping. He was very obliging, and we can thoroughly recommend him for his professionalism. (Guess what we are not related to Nathan)
Complex have been deliverying plumbing, gas and drainage serivices for our new builds for 5+ years. They are professional at all times and pride themselves on delivering quality results.
Nathan did a wonderful job. very quick to respond and worked very hard to get the job done. it is a very small space but nathan worked hard to get the job done. he is a very professional worker and a very nice young man. would highly recommend. will definitely use again :grin:
Im grateful to have found Jason and Nathan at Complex, who were helpful in every way to get the gas connection issue with my coffee machine sorted. And they did. Without which i coukdnt operate my small business as a mobile coffee vendor. From the first contact by phone call and immediate text reply back from Nathan, (though they were already on another job), to Jason carefully putting back all the panels of the machine after he sorted it within an hour of my arrival, I was
We have been using Jason , owner/operater of Complex for the last 4years on multiple projects. Ranging from new house builds to hotwater cylinder replacements.His Team are efficient and honest. All work is undertaken professionally and if any problems arise,Jason communicates well with us .So at the end we are on the same page, with a great outcome/finish. Highly Recommend Complex Plumbing and Gas !
fantastic service and quality of work. jason went the extra mile to complete our multiple plumbing jobs. i would recommend Coplex Plumbing for all youf plumbing, drainage needs.
Jason arrived on time as arranged to give a free quote for the replacement of the water main to the house and replace all the plumbing pipes under the house. He said his team could complete all the work and have water back by 1630 pm the same day. On the day arranged by us both to do the job Jason and his team of plumbers arrived promptly at the arranged time. They worked tirelessly and without breaks for morning tea, lunch or afternoon tea to complete the work and the water was turned back
In the past I'd had two plumbers try to fix my shower pressure, and both of them ended up giving up. Daniel from Complex was able to fix it in no time at all. I now have decent shower pressure for the first time in years. Best money I've ever spent. Bloody brilliant.
We had some drain channel and cesspit installed and connected to the existing stormwater to help with surface flooding on my section. Awesome work and very tidy job.
Nathan has always been there when I needed him . Has done a few jobs for me - leaking pipe under the house, valve repalcement in gas heater, new gas hob connection + kitchen sink and lately installation of toilets. I have found Nathan very reliable, punctual, professional , friendly and polite. He leaves the area clean when finished. Do not look at the outside of this guy. He is dedicated and committed to provide excellent service. Any issues he will fix them. I cannot find any faults with
Sources
1 named public sourceWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Check dates vary by source. Where we hold a date, the check shows it.
About
Auckland Central gasfitter source row from NoCowboys with customer-review aggregate, phone, website, gas/plumbing category evidence, Onehunga result context, and Auckland Central search context.
What this business says about itself
From their own website
What this business says about itself
See their work: Photo gallery (opens in new tab) · Instagram (opens in new tab) · Facebook (opens in new tab)
- Emergency availability: respond within 24 hours
- Guarantee: Customer Satisfaction Guaranteed
- Areas served: Central, South, East, West Auckland
- Brands they work with: Rinnai, Rheem
- Good to know: Free quotes
Accreditations it displays. Confirm each is current on the official register before you hire:
- PGDB registered (plumber / gasfitter / drainlayer, NZ) · verify (opens in new tab)
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Independent checks
About this business
How long they've really been tradingOperating since at least 2018 (8 years), according to an independent source, not just their own word.
Website online since2016First public review2018
Your own checks
What to check before you hire
Worth checking yourself
Their public evidence comes from a single source. Look them up on another site before deciding.
No credentials are shown here and the business has not claimed this profile. Ask to see certificates and insurance directly.
Verify at the sourceCheck them yourself
In New Zealand, most plumbing and drainlaying work, and all gasfitting, is restricted to licensed tradespeople. Check the person doing the work holds a current licence on the Plumbers, Gasfitters and Drainlayers Board public register before you hire.
Check the PGDB registerIn New Zealand, restricted building work must be carried out or supervised by a Licensed Building Practitioner, and all electrical, plumbing, gasfitting and drainlaying by a licensed tradesperson (EWRB for electricians, PGDB for plumbers and gasfitters). Check the public register before you hire.
For residential building work of $30,000 or more you are legally entitled to a written contract and a disclosure statement setting out the tradesperson's skills, licences and insurance. Ask for both before work starts.
Confirm they cover your area and can actually come out in your timeframe before anything else.
Want an extra legitimacy check? Run the Cowboy Checker on Complex Plumbing Ltd before you contact them.
Run Cowboy Checker →Good to know
Common questions about Complex Plumbing Ltd
Is Complex Plumbing Ltd available for emergencies?
They advertise respond within 24 hours availability on their own website. This is the business's own statement on their website, not something we have independently checked. For an urgent job, call to confirm they can attend before you rely on it.
Is Complex Plumbing Ltd a legitimate business?
Complex Plumbing Ltd has 113 independent public reviews, rated 5 out of 5. It is a registered business on Companies Office, listed as active, and the public register shows no adverse status (no dissolution, insolvency or strike-off) against it. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Complex Plumbing Ltd?
Complex Plumbing Ltd has 113 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know Complex Plumbing Ltd's reviews are genuine?
Complex Plumbing Ltd's 113 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Is Complex Plumbing Ltd a registered business?
Complex Plumbing Ltd is a registered business on Companies Office (company number 6030507), listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
Does Complex Plumbing Ltd guarantee their work?
They state on their own website that customer Satisfaction Guaranteed. This is the business's own statement on their website, not something we have independently checked. Get the terms in writing before you agree to the job.
What areas does Complex Plumbing Ltd cover?
They state on their own website that they cover Central, South, East, West Auckland. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.