Early access in New Zealand. We are still building our directory for New Zealand. The profiles here show real public evidence from named sources, but coverage is limited and our checks are not yet as complete as on our UK site. Treat this as a preview, not a full picture.

Public evidence profile

Ninja Group Drainage & Civil Ltd

DrainlayerHenderson5.05 reviews · 1 independent public source
How quickly they respond
24 hours a day / 7 days a week.
Credentials & registries
Plumbers Gasfitters and Drainlayers Board
Companies Office
Active incorporated business
Trust Score
58out of 100
Good record, gaps to check
  • Rated 5.0 from 5 reviews
  • Reviewed 7 months ago

Plumbers, Gasfitters and Drainlayers Board: current credential shown

How this score is worked out
Rating5.0 / 5
Review volumeLow · 5
Independent sources1 independent public source
Credentials1 credential shown

How this score is made up

What customers say21.4 of 60
Independent checks30 of 30
Track record6.5 of 10
See the independent checks
  • Licences and credentials15 of 15
  • Ways to reach them15 of 15
Response evidence

Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.

Call 09 553 4653
Public response evidence

How quickly they respond

What their website advertises:

  • 24 hours a day / 7 days a week.
  • "24 HOURS A DAY / 7 DAYS A WEEK"

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 5 customer reviews on NoCowboys.

Reliable and punctualQuoted from 2 reviews

“Very friendly and prompt team!” · NoCowboys, 4 Sept 2025

“They arrived when they said they would, carried out the job efficiently and explained what had been done.” · NoCowboys, 5 Oct 2023

Credentials and associations

Credentials and memberships

1

These credentials and memberships are attributed to named public sources. Check the source before relying on them.

Companies Office registration

Active incorporated business

Active

NINJA GROUP DRAINAGE & CIVIL LIMITED is linked to a Companies Office entry. This shows the business registration, not evidence of workmanship or service quality.

Legal nameNINJA GROUP DRAINAGE & CIVIL LIMITED
Company number5890509
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

Photos listed on NoCowboys

10 photos

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
5 reviews in public evidenceReviewed on public review sources since 2023Most recent review
Where these reviews are published
  • NoCowboys5 reviews · 5.0 avg

Detailed reviews

Henry5.0 / 5 ·

Great service from start to finish. Great communication from the office, sure scope booked quickly and quote turn around very prompt. Left the worksite clean and tidy. Very happy with the lads work

NoCowboys
Meghan5.0 / 5 ·

Very friendly and prompt team! Affordable prices, thank you!

NoCowboys
Helga5.0 / 5 ·

I appreciated Nathan and Jason's professionalism. They arrived when they said they would, carried out the job efficiently and explained what had been done. Really friendly and polite guys. Highly recommended!

NoCowboys
Emily5.0 / 5 ·

Ninja Drainage upgraded my stormwater soakhole at my house. After the flooding this had made such a big difference. I highly recommend Ninja Drainage and Civil they were great to deal with and the Drainage team really did a fantastic job.

NoCowboys
Dean5.0 / 5 ·

Excellent service from this crowd. Had a cctv inspection completed finding a broken sewer line that was causing a blockage. Ninja Drainage and Civil came out and fixed the broken sewer line for me. Guys on site were knowledgeable and friendly - highly recommend to anyone wanting any drainage work.

NoCowboys
Sources

Where this information comes from

2 named public sources

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

Registers and membership directories

Check dates vary by source. Where we hold a date, the check shows it.

Independent checks

About this business

How long they've really been tradingOperating since at least 2023 (3 years), according to an independent source, not just their own word.
Website online since2015First public review2023
Your own checks

What to check before you hire

Worth checking yourself
Only a few public reviews are shown. Ask for recent references you can contact.
Their public evidence comes from a single source. Look them up on another site before deciding.
In 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 Ninja Group Drainage & Civil Ltd before you contact them.

Run Cowboy Checker →
Good to know

Common questions about Ninja Group Drainage & Civil Ltd

Is Ninja Group Drainage & Civil Ltd available for emergencies?

They state on their own website that 24 hours a day / 7 days a week.. 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 Ninja Group Drainage & Civil Ltd a legitimate business?

Ninja Group Drainage & Civil Ltd has 5 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 Ninja Group Drainage & Civil Ltd?

Ninja Group Drainage & Civil Ltd has 5 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 Ninja Group Drainage & Civil Ltd's reviews are genuine?

Ninja Group Drainage & Civil Ltd's 5 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 Ninja Group Drainage & Civil Ltd qualified and accredited?

We hold 1 independently sourced credential for Ninja Group Drainage & Civil Ltd, including Plumbers Gasfitters and Drainlayers Board. Each is attributed to the body that issued it in the credentials section. For example, Plumbers Gasfitters and Drainlayers Board is the Plumbers, Gasfitters and Drainlayers Board: by law you must be registered with it to do plumbing, gasfitting or drainlaying in New Zealand.

Is Ninja Group Drainage & Civil Ltd a registered business?

NINJA GROUP DRAINAGE & CIVIL LIMITED is a registered business on Companies Office (company number 5890509), listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.

What areas does Ninja Group Drainage & Civil Ltd cover?

They state on their own website that they cover Auckland. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.