Job docketOnehunga → all AucklandCallouts daily

The plumber your neighbours already vouch for.

Complex Plumbing has run on word of mouth for over fifteen years — 99.7% rated across 113 authenticated NoCowboys reviews. Certified plumbing, gasfitting and drainlaying, from burst-pipe callouts to full bathroom fit-outs.

Call 027 444 6744 Read the record

Certified · Plumber / Gasfitter / Drainlayer 15+ yrs · trade experience Emergency · callouts covered

99.7%

113 authenticated ratings on NoCowboys.
Not testimonials we wrote. A public record anyone can check.
Below: entries from the ledger, verbatim.

№ 113

“Nathan is a polite and professional plumber… very grateful for his professional service.”

— Jing · Apr 2026
NoCowboys review

№ 112

“Jason responded immediately with clear, expert guidance… rare to find someone who combines strong technical skill.”

— Mahomed · Mar 2026
NoCowboys review

№ 097

“Nathan is someone who truly knows what he’s doing… everything went smoothly.”

— Alex & Rose · Jul 2025
NoCowboys review

№ 089

“Top class service. Easy to deal with and Nathan’s been awesome.”

— Piere · Apr 2025
NoCowboys review

№ 086

“Nathan did a stress-free, tidy, professional job… really friendly guy too.”

— Peter · Mar 2025
NoCowboys review

№ 071

“Can’t say enough — excellent, prompt service. A fantastic lad.”

— Oscar · Sep 2024
NoCowboys review

Every entry above is a real, authenticated customer rating. The full record — all 113 — is public.

Verify on NoCowboys ↗

How does a plumbing company hit 99.7% without ever advertising?

By doing the unglamorous things every single time: turning up when they said they would, leaving the site tidier than they found it, and explaining the job in plain English before a dollar changes hands.

Complex Plumbing was built in Onehunga by Jason Marinko — a certified plumber, gasfitter and drainlayer with over fifteen years on the tools. The team grew the only way a trades business should: one recommended job at a time.

Read the reviews and a pattern jumps out — customers name the person, not the company. That only happens when the same reliable people keep showing up.

Named in the reviews

Jason Marinko Director · Certified plumber, gasfitter & drainlayer “Responded immediately with clear, expert guidance.”

Nathan Plumber Named in review after review: “polite and professional”, “truly knows what he’s doing”.

Daniel Team

Ben Tauariki Team

Justin Team

The work

Certified across all three trades

Plumbing

Repairs, maintenance and full installations for homes and commercial sites — from a dripping tap to a complete bathroom, kitchen or laundry renovation.

Bathroom fit-outsKitchen & laundryRepairsNew builds

Gasfitting

Certified gas installation and servicing — appliances, heaters and leak detection, done to code by licensed gasfitters.

Appliance installGas heatingLeak detection

Drainlaying

Residential and commercial drainage — stormwater, wastewater and French drains, laid right the first time.

StormwaterWastewaterFrench drains

Hot water & emergencies

Electric and gas hot-water systems, plus emergency callouts — because burst pipes don’t book appointments.

Cylinder replacementGas & electricEmergency callout

Based in Onehunga. On the road across all Auckland.

The van covers the whole city — from the home patch out to 60+ suburbs, east to west, harbour to harbour.

The run sheet60+ suburbs covered

Onehunga — HQ Westmere Western Springs Weymouth Epsom Mt Eden Remuera Penrose Mangere Mt Wellington Ellerslie Hillsborough + 50 more suburbs

113 households have rated the work. Yours could be № 114.

027 444 6744 Book a job

Onehunga · Auckland-wide · plumbing / gasfitting / drainlaying