Company lists · Data refreshed September 2026

Top 25 Refinery engineering firms based in New Zealand

Name: Refinery engineering firms based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 81 companies tracked

RevenueBase identified 81 refinery engineering firms headquartered in New Zealand as of September 2026 and tracks 786 professional contacts across them, including 375 with verified work emails. Auckland is the largest hub.

This list covers refinery engineering firms headquartered in New Zealand, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

81Companies

786Contacts tracked

375Verified emails

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The 25 largest refinery engineering firms based in New Zealand

Ranked by team size

Top 25 of 81 refinery engineering firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to refinery engineering firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Dialog Fitzroy LTD	Partial evidence	New Plymouth, New ZealandHQ checked Sep 17, 2026	501-1,000	150 contacts →
	Partial evidence “DIALOG Fitzroy is one of Australasia's largest multi-disciplined engineering services companies.” Source: RevenueBase Database · checked Sep 17, 2026
2	Brightwater Engineering	Indirect evidence	Nelson, New ZealandHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “From the very beginning our core purpose has been to truly understand our client’s requirements and through a collaborative partnership provide fit for purpose industrial…” Source: RevenueBase Database · checked Sep 17, 2026
3	CGW Consulting Engineers	Partial evidence	Nelson, New ZealandHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “CGW Consulting Engineers is a multi-discipline consulting engineering firm with its head office in Nelson serving our clients’ needs for projects throughout New Zealand and…” Source: RevenueBase Database · checked Sep 17, 2026
4	SGS ECL	Indirect evidence	New Plymouth, New ZealandHQ checked Sep 17, 2026	11-50	39 contacts →
	Indirect evidence “SGS ECL is a PROCESS AUTOMATION, FUNCTIONAL SAFETY & INDUSTRIAL CYBER consultancy, who primarily service the Australasian energy and process industries.” Source: RevenueBase Database · checked Sep 17, 2026
5	Mesh Consulting Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 17, 2026	11-50	34 contacts →
	Partial evidence “Since 2018, Mesh has been transforming the consulting engineering landscape within the building services sector, one project at a time.” Source: RevenueBase Database · checked Sep 17, 2026
6	JRG Energy	Indirect evidence	Taupo, New ZealandHQ checked Sep 17, 2026	11-50	27 contacts →
	Indirect evidence “JRG Energy is an established group of personalized consultants servicing all aspects of the Oil and Gas, Geothermal, and Renewable Energy Industries.” Source: RevenueBase Database · checked Sep 17, 2026
7	Dobbie	Partial evidence	Auckland, New ZealandHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “Dobbie Engineers is a specialist industrial engineering consultancy with a foundation in mechanical engineering, mechatronics, structural engineering, and process design.” Source: RevenueBase Database · checked Sep 17, 2026
8	Patton Engineering LTD	Partial evidence	Whakatu, New ZealandHQ checked Sep 17, 2026	51-200	23 contacts →
	Partial evidence “Patton Engineering Ltd is Hawke’s Bay’s premier engineering company.” Source: RevenueBase Database · checked Sep 17, 2026
9	Novare Design	Partial evidence	Wellington, New ZealandHQ checked Sep 17, 2026	11-50	20 contacts →
	Partial evidence “We are a leading firm of civil and structural professionals providing consulting engineering services.” Source: RevenueBase Database · checked Sep 17, 2026
10	BDX Group	Partial evidence	Whangarei, New ZealandHQ checked Sep 17, 2026	11-50	17 contacts →
	Partial evidence “BDX Group delivers integrated engineering, maintenance and contracting solutions.” Source: RevenueBase Database · checked Sep 17, 2026
11	ITL Engineering	Indirect evidence	New Plymouth, New ZealandHQ checked Sep 17, 2026	51-200	16 contacts →
	Indirect evidence “Design and build specialists for hydrocarbons production facilities for 25 years.” Source: RevenueBase Database · checked Sep 17, 2026
12	Taurus Engineering	Partial evidence	Christchurch, New ZealandHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “Taurus Engineering is a Christchurch based company known for providing tailored engineering solutions in water infrastructure, petrochemical equipment, and structural steel.” Source: RevenueBase Database · checked Sep 17, 2026
13	Index Engineering LTD	Partial evidence	Rotorua, New ZealandHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “Index Engineering is an award-winning mechanical engineering consultancy.” Source: RevenueBase Database · checked Sep 17, 2026
14	Pace Engineering LTD	Partial evidence	New Plymouth, New ZealandHQ checked Sep 17, 2026	51-200	14 contacts →
	Partial evidence “Pace Engineering Ltd is a privately owned multi-disciplined engineering service company situated in New Plymouth, Taranaki, the heart of New Zealand’s energy province.” Source: RevenueBase Database · checked Sep 17, 2026
15	Clendon Burns & Park LTD	Indirect evidence	Wellington, New ZealandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Clendon Burns & Park ltd has operated as a firm of Consulting Structural and Civil Engineers in Wellington for over 60 years.” Source: RevenueBase Database · checked Sep 17, 2026
16	Petrotec Services LTD	Indirect evidence	Christchurch, New ZealandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Established in 1987, Petrotec Services Ltd is a nationwide Construction, Contracting and Servicing company operating in the petroleum industry specialising in hazardous substances.” Source: RevenueBase Database · checked Sep 17, 2026
17	NEW Zealand Consulting Engineers LTD	Indirect evidence	Wellington, New ZealandHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “WE ADD VALUE, NOT COST.” Source: RevenueBase Database · checked Sep 17, 2026
18	Mcmahon LTD	Partial evidence	Grafton, New ZealandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “With a proud history of over 30 years servicing industry, we hold a unique position within the engineering sector in New Zealand.” Source: RevenueBase Database · checked Sep 17, 2026
19	Energyworks Limited	Indirect evidence	Bell Block New Plymouth, New ZealandHQ checked Sep 17, 2026	201-500	11 contacts →
	Indirect evidence “Energyworks Group is a multi-discipline project management and construction contractor, specialising in the oil and gas sector.” Source: RevenueBase Database · checked Sep 17, 2026
20	BLM Engineering LTD	Partial evidence	Morrinsville, New ZealandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Welcome to BLM Engineering, a trusted and reputable engineering company based in New Zealand.” Source: RevenueBase Database · checked Sep 17, 2026
21	Rendertech LTD	Partial evidence	Auckland, New ZealandHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “With over three decades’ experience in New Zealand’s processing industry, Rendertech helps businesses optimise their plant efficiency and throughput with specialist engineering…” Source: RevenueBase Database · checked Sep 17, 2026
22	ALM Systems LTD	Partial evidence	Christchurch, New ZealandHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “ALM Systems Ltd provides a specialised resource in industrial engineering consulting for both national and international clients, with a background spanning over 20 years.” Source: RevenueBase Database · checked Sep 17, 2026
23	Gisborne Engineering	Partial evidence	Gisborne, New ZealandHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Gisborne Engineering has been delivering high-quality engineering solutions for the last 126 years with our reputation for excellence, innovation, and reliability.” Source: RevenueBase Database · checked Sep 17, 2026
24	Artifex Engineering Limited NZ	Partial evidence	Hastings, New ZealandHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Artifex Engineering Limited provides project, engineering, and construction management services to New Zealand’s industrial, process and export businesses.> Project Management…” Source: RevenueBase Database · checked Sep 17, 2026
25	N2p Controls	Indirect evidence	Auckland, New ZealandHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “N2P CONTROLS EMPLOYS A NUMBER OF ENGINEERS WITH DISCIPLINES RANGING FROM PROCESS TO ELECTRONIC.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: refinery engineering firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names refinery engineering firms.
Partial evidence: Its own public description names part of refinery engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery engineering firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 81 refinery engineering firms based in New Zealand

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Refinery engineering firms based in New Zealand at a glance

As of Sep 17, 2026

47.7%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

27.2%Largest-city concentration · Auckland

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Email recency for this list is measured worldwide rather than for New Zealand, so it is reported there. Company counts and contact totals on this page are exact for New Zealand, over 81 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among refinery engineering firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in New Zealand whose own description of what they do matches “refinery engineering firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names refinery engineering firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among refinery engineering firms, and records with no verified work email. Companies headquartered outside New Zealand are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 375 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names refinery engineering firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many refinery engineering firms are there based in New Zealand?

RevenueBase identified 81 refinery engineering firms headquartered in New Zealand as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Dialog Fitzroy LTD, headquartered in New Plymouth, tops this list with the largest team on record.

Which city has the most refinery engineering firms?

Auckland leads with 22 headquartered companies, followed by New Plymouth (10) and Christchurch (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 375 verified decision-maker contacts tracked across these 81 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.