Company lists · Data refreshed September 2026

Top 25 Building systems engineering firms based in Australia

Name: Building systems engineering firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 320 companies tracked

RevenueBase identified 320 building systems engineering firms headquartered in Australia as of September 2026 and tracks 5,908 professional contacts across them, including 3,363 with verified work emails. Sydney is the largest hub.

This list covers building systems engineering firms headquartered in Australia, 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 16, 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 16, 2026 86% judged on-target in blind review

320Companies

5,908Contacts tracked

3,363Verified emails

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The 25 largest building systems engineering firms based in Australia

Ranked by team size

Top 25 of 320 building systems engineering firms based in Australia, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to building systems 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	Nova Systems	Strong evidence	Adelaide, AustraliaHQ checked Sep 16, 2026	501-1,000	599 contacts →
	Strong evidence “Built on 25 years of test and evaluation and engineering experience, Nova Systems designs, integrates and delivers complex programs for Defence, emergency services and civil…” Source: RevenueBase Database · checked Sep 16, 2026
2	A.G. Coombs	Indirect evidence	Moorabbin, AustraliaHQ checked Sep 16, 2026	1,001-5,000	502 contacts →
	Indirect evidence “A.G.” Source: RevenueBase Database · checked Sep 16, 2026
3	Airmaster	Strong evidence	Scoresby, AustraliaHQ checked Sep 16, 2026	1,001-5,000	495 contacts →
	Strong evidence “At Airmaster, our goal is to lead the way in integrated building services, combining HVAC & R, building automation, electrical, and fire systems to create smart buildings that are…” Source: RevenueBase Database · checked Sep 16, 2026
4	TTW	Partial evidence	North Sydney, AustraliaHQ checked Sep 16, 2026	501-1,000	472 contacts →
	Partial evidence “Great engineering starts with great people.” Source: RevenueBase Database · checked Sep 16, 2026
5	LCI Consultants	Strong evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	201-500	277 contacts →
	Strong evidence “LCI Consultants is an Australian-operated, employee-owned building engineering design firm, delivering tailored and sustainable solutions across a wide range of sectors-including…” Source: RevenueBase Database · checked Sep 16, 2026
6	Partum Engineering	Partial evidence	Burswood, AustraliaHQ checked Sep 16, 2026	201-500	154 contacts →
	Partial evidence “Partum is an Australian based company providing engineering design and project consulting advice.” Source: RevenueBase Database · checked Sep 16, 2026
7	MEP	Partial evidence	Bibra Lake, AustraliaHQ checked Sep 16, 2026	201-500	149 contacts →
	Partial evidence “MEP is an award-winning building services contractor specializing in multiple disciplines across the construction industry.” Source: RevenueBase Database · checked Sep 16, 2026
8	BSE Australia	Strong evidence	North Sydney, AustraliaHQ checked Sep 16, 2026	51-200	121 contacts →
	Strong evidence “Building Services Engineers (BSE) is a 100% Australian-owned national engineering consultancy established in 1994.” Source: RevenueBase Database · checked Sep 16, 2026
9	Jensen Hughes Pacific	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 2026	51-200	104 contacts →
	Strong evidence “At Jensen Hughes Pacific, we deliver industry leading services in building code compliance, fire and life safety, accessibility, sustainable design, and fire systems design.” Source: RevenueBase Database · checked Sep 16, 2026
10	TMK Consulting Engineers	Strong evidence	Adelaide, AustraliaHQ checked Sep 16, 2026	51-200	102 contacts →
	Strong evidence “TMK Consulting Engineers success and growth is built on a reputation of delivering broad-based engineering design that is high quality, technical excellence, reliable and building…” Source: RevenueBase Database · checked Sep 16, 2026
11	COVA	Partial evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	51-200	101 contacts →
	Partial evidence “Engineering Better Lives” Source: RevenueBase Database · checked Sep 16, 2026
12	Collective Engineering	Partial evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	51-200	88 contacts →
	Partial evidence “We're a diverse team of top-tier experienced building services engineers who've spent years leading large-scale projects for clients across Australia and around the world.” Source: RevenueBase Database · checked Sep 16, 2026
13	Bligh Tanner	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 16, 2026	51-200	69 contacts →
	Partial evidence “With offices in Brisbane and Sydney, Bligh Tanner is a structural, façade, civil, environmental and water engineering consultancy distinguished by its high level of expertise…” Source: RevenueBase Database · checked Sep 16, 2026
14	Bornhorst Ward	Indirect evidence	Brisbane, AustraliaHQ checked Sep 16, 2026	51-200	63 contacts →
	Indirect evidence “Civil and Structural Consulting Engineers Bornhorst + Ward combine 50 years business experience, innovative design, advanced technology, cunting edge solutions, quality and…” Source: RevenueBase Database · checked Sep 16, 2026
15	Adams Consulting Engineers PTY LTD	Indirect evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	51-200	63 contacts →
	Indirect evidence “Adams Consulting Engineers began in Melbourne in 1991, with a small team of talented structural and civil consulting engineers.” Source: RevenueBase Database · checked Sep 16, 2026
16	Bestec PTY LTD	Strong evidence	Adelaide, AustraliaHQ checked Sep 16, 2026	51-200	54 contacts →
	Strong evidence “We are a consulting engineering firm focused on bringing buildings to life.” Source: RevenueBase Database · checked Sep 16, 2026
17	Acmena Group PTY LTD	Strong evidence	Milton, AustraliaHQ checked Sep 16, 2026	11-50	48 contacts →
	Strong evidence “Acmena is a consulting engineering business working in the transportation and other safety-critical systems sectors.” Source: RevenueBase Database · checked Sep 16, 2026
18	Wrap Consulting Engineering	Strong evidence	Richmond, AustraliaHQ checked Sep 16, 2026	51-200	48 contacts →
	Strong evidence “WRAP Engineering is a comprehensive building services consultancy focused on delivering the highest level of personalised service to its clients.” Source: RevenueBase Database · checked Sep 16, 2026
19	MEP Consulting Engineers	Partial evidence	Perth Cbd, AustraliaHQ checked Sep 16, 2026	n/a	43 contacts →
	Partial evidence “We are Perth-based consultancy that specialises in the design and management of Mechanical, Electrical and Plumbing (MEP) systems for the built environment.” Source: RevenueBase Database · checked Sep 16, 2026
20	Ashburner Francis	Strong evidence	East Brisbane, AustraliaHQ checked Sep 16, 2026	51-200	42 contacts →
	Strong evidence “Ashburner Francis is an engineering firm specialising in mechanical, electrical, hydraulic and ESD services for buildings and urban developments.” Source: RevenueBase Database · checked Sep 16, 2026
21	Sellick Consultants PTY LTD	Partial evidence	Braddon, AustraliaHQ checked Sep 16, 2026	11-50	40 contacts →
	Partial evidence “Sellick Consultants is an award winning, multi-disciplinary engineering consulting firm offering superior design skills in the fields of structural, civil and hydraulic…” Source: RevenueBase Database · checked Sep 16, 2026
22	Sparks Partners Consulting Engineers	Partial evidence	Parramatta, AustraliaHQ checked Sep 16, 2026	11-50	39 contacts →
	Partial evidence “Established more than 30-years ago, Sparks+Partners Consulting Engineers has a rich history and expertise in quality engineering.” Source: RevenueBase Database · checked Sep 16, 2026
23	NJM Design VIC PTY LTD	Partial evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	11-50	39 contacts →
	Partial evidence “NJM Design is a leading Melbourne-based engineering consultancy focused on delivering high-quality, innovative design solutions that maximise the viability and appeal of every…” Source: RevenueBase Database · checked Sep 16, 2026
24	Costin ROE Consulting PTY LTD	Indirect evidence	Charlestown, AustraliaHQ checked Sep 16, 2026	11-50	36 contacts →
	Indirect evidence “Costin Roe Consulting is a firm of civil and structural engineers with a proud track record of achievement in commercial, industrial, residential, community, infrastructure and…” Source: RevenueBase Database · checked Sep 16, 2026
25	Matter	Indirect evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	11-50	33 contacts →
	Indirect evidence “Consulting Structural Engineers.” Source: RevenueBase Database · checked Sep 16, 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: building systems 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 building systems engineering firms.
Partial evidence: Its own public description names part of building systems engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building systems 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 320 building systems engineering firms based in Australia

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Building systems engineering firms based in Australia at a glance

As of Sep 16, 2026

56.9%Verified-email coverage

18.5Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · Sydney

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

173

11-50

105

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 320 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 building systems 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 Australia whose own description of what they do matches “building systems 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 building systems 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 building systems engineering firms, and records with no verified work email. Companies headquartered outside Australia 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, 3,363 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 16, 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.

Building systems engineering firms by metro

Building systems engineering firms in Sydney38
Building systems engineering firms in Melbourne34

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 building systems 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 building systems engineering firms are there based in Australia?

RevenueBase identified 320 building systems engineering firms headquartered in Australia 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?

Nova Systems, headquartered in Adelaide, tops this list with the largest team on record.

Which city has the most building systems engineering firms?

Sydney leads with 38 headquartered companies, followed by Melbourne (34) and Brisbane (17).

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 3,363 verified decision-maker contacts tracked across these 320 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 16, 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.