Company lists · Data refreshed September 2026

Top 25 Retrofit consulting companies based in Australia

Name: Retrofit consulting companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 240 companies tracked

RevenueBase identified 240 retrofit consulting companies headquartered in Australia as of September 2026 and tracks 1,616 professional contacts across them, including 781 with verified work emails. Melbourne is the largest hub.

This list covers retrofit consulting companies 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 29, 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 29, 2026 86% judged on-target in blind review

240Companies

1,616Contacts tracked

781Verified emails

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The 25 largest retrofit consulting companies based in Australia

Ranked by team size

Top 25 of 240 retrofit consulting companies based in Australia, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to retrofit consulting companies: 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	Partum Engineering	Partial evidence	Burswood, AustraliaHQ checked Sep 29, 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 29, 2026
2	Mckenzie Group Consulting	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	51-200	138 contacts →
	Partial evidence “Backed by global leader Bureau Veritas, McKenzie Group Consulting is a team of 120+ talented, skilled and passionate professionals.” Source: RevenueBase Database · checked Sep 29, 2026
3	Philip Chun Building Compliance	Indirect evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	51-200	86 contacts →
	Indirect evidence “Australia's most trusted and comprehensive building code, essential services management and accessibility consultancy.” Source: RevenueBase Database · checked Sep 29, 2026
4	Adams Consulting Engineers PTY LTD	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	51-200	63 contacts →
	Partial 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 29, 2026
5	Steve Watson & Partners	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	51-200	57 contacts →
	Partial evidence “Steve Watson & Partners is a well recognised and professional building code consulting and approvals service.” Source: RevenueBase Database · checked Sep 29, 2026
6	Bestec PTY LTD	Partial evidence	Adelaide, AustraliaHQ checked Sep 29, 2026	51-200	54 contacts →
	Partial evidence “We are a consulting engineering firm focused on bringing buildings to life.” Source: RevenueBase Database · checked Sep 29, 2026
7	Construction Services And Infrastructure	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	42 contacts →
	Indirect evidence “Construction Services & Infrastructure (CSI) is a leading independent Project Management, Building Services Management and Commissioning consultancy for the commercial…” Source: RevenueBase Database · checked Sep 29, 2026
8	Mcveigh Consultants	Indirect evidence	Brisbane, AustraliaHQ checked Sep 29, 2026	11-50	36 contacts →
	Indirect evidence “McVeigh Consultants has been delivering engineering solutions since 1988.” Source: RevenueBase Database · checked Sep 29, 2026
9	Walkerbai Consulting	Partial evidence	AustraliaHQ checked Sep 29, 2026	51-200	34 contacts →
	Partial evidence “WalkerBai is a leading consulting firm providing premium engineering, sustainable design, and technical management services across all building sectors.” Source: RevenueBase Database · checked Sep 29, 2026
10	SUHO	Indirect evidence	Adelaide (edwardstown), AustraliaHQ checked Sep 29, 2026	11-50	29 contacts →
	Indirect evidence “Operating for 20 years across Australia, SUHO provides premium consultancy services to the commercial and residential building industries.” Source: RevenueBase Database · checked Sep 29, 2026
11	Residential Engineering	Partial evidence	Wentworthville, AustraliaHQ checked Sep 29, 2026	11-50	26 contacts →
	Partial evidence “We are a proudly Australian owned family business of consulting structural engineers with offices in Sydney and the Southern Highlands.” Source: RevenueBase Database · checked Sep 29, 2026
12	PE Consulting Engineers	Partial evidence	Nerang, AustraliaHQ checked Sep 29, 2026	11-50	20 contacts →
	Partial evidence “PE Consulting Engineers (PECE) designs and manages the construction of electrical, mechanical, and communications systems.” Source: RevenueBase Database · checked Sep 29, 2026
13	Structability	Partial evidence	Rockdale, AustraliaHQ checked Sep 29, 2026	11-50	20 contacts →
	Partial evidence “Consulting engineering firm specialising in assisting the Insurance and Strata markets.” Source: RevenueBase Database · checked Sep 29, 2026
14	System Solutions Engineering PTY LTD	Partial evidence	Eastwood, AustraliaHQ checked Sep 29, 2026	11-50	18 contacts →
	Partial evidence “Whether it’s retrofitting energy-efficient air conditioning systems in a heritage-listed building, developing new mechanical services programs for large hospitals, or designing…” Source: RevenueBase Database · checked Sep 29, 2026
15	Diagnostech - Est. 2002	Indirect evidence	St Leonards, AustraliaHQ checked Sep 29, 2026	11-50	18 contacts →
	Indirect evidence “Our purpose: To achieve best outcome for our clients by delivering professional remedial building consultancy services with care and integrity.” Source: RevenueBase Database · checked Sep 29, 2026
16	Brogue Consulting Engineers	Partial evidence	Fitzroy, AustraliaHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “Brogue Consulting Engineers are structural and civil specialists in both design and construction, capable of providing advisory and construction documentation for various…” Source: RevenueBase Database · checked Sep 29, 2026
17	Izzat Consulting Engineers	Partial evidence	Hamilton, AustraliaHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “Izzat Consulting Engineers is a privately owned Engineering consultancy known for its different thinking that leads to smarter solutions.” Source: RevenueBase Database · checked Sep 29, 2026
18	Constructive Building Consultants PTY LTD	Indirect evidence	Gnangara, AustraliaHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Constructive Building Consultants are leaders in Western Australia’s building and construction industry, specialising in all levels of residential, commercial and industrial…” Source: RevenueBase Database · checked Sep 29, 2026
19	Palantir Consulting	Indirect evidence	North Strathfield, AustraliaHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Structural, PT, Modular, Façade, Peer Review and Remedial Consultant #1 Go-to Specialist for Peer Review and Remedial Design of Post-tensioned Slabs in NSW.” Source: RevenueBase Database · checked Sep 29, 2026
20	Nicolas Building Surveyors	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “With over 40 years of experience, Nicolas Building Surveyors (NBS) was founded to raise the standard of building compliance and consulting across Melbourne and beyond.” Source: RevenueBase Database · checked Sep 29, 2026
21	Centric Building Services Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “Centric Building Services Engineers Centric Building Services Engineers are a team of highly experienced consulting engineering experts in building services.” Source: RevenueBase Database · checked Sep 29, 2026
22	Zait Engineering Solutions	Indirect evidence	Parramatta, AustraliaHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “Structural engineering is at the heart of ZAIT Engineering Solutions.” Source: RevenueBase Database · checked Sep 29, 2026
23	GWA Consultants Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “UNDERSTANDING THE PROBLEM & IDENTIFYING REAL SOLUTIONS GWA Consultants is a specialist Mechanical Engineering and Energy Consultancy firm with over 25 years of experience in the…” Source: RevenueBase Database · checked Sep 29, 2026
24	Waratah Consulting	Partial evidence	Ultimo, AustraliaHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “Waratah Consulting provides practical, compliance-focused building inspection and environmental consulting services across NSW.” Source: RevenueBase Database · checked Sep 29, 2026
25	Intermarc Global	Partial evidence	North Ryde, AustraliaHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “At IMG, with over three decades of collective industry expertise, we offer tailored consulting services to elevate property performance through cutting-edge solutions.” Source: RevenueBase Database · checked Sep 29, 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: retrofit consulting companies. 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 retrofit consulting companies.
Partial evidence: Its own public description names part of retrofit consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name retrofit consulting companies. 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 240 retrofit consulting companies based in Australia

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Retrofit consulting companies based in Australia at a glance

As of Sep 29, 2026

48.3%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

14.2%Largest-city concentration · Melbourne

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

164

11-50

51-200

201-500

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 240 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 retrofit consulting companies, 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 “retrofit consulting companies”. 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 retrofit consulting companies), 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 retrofit consulting companies, 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, 781 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 29, 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.

Retrofit consulting companies by metro

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 retrofit consulting companies, 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 retrofit consulting companies are there based in Australia?

RevenueBase identified 240 retrofit consulting companies 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?

Partum Engineering, headquartered in Burswood, tops this list with the largest team on record.

Which city has the most retrofit consulting companies?

Melbourne leads with 34 headquartered companies, followed by Sydney (26) and Perth (10).

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 781 verified decision-maker contacts tracked across these 240 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 29, 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.