Company lists · Data refreshed September 2026

Top 25 Retrofit consultants based in Sydney, Australia

Name: Retrofit consultants based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 77 companies tracked

RevenueBase identified 77 retrofit consultants headquartered in Sydney, Australia as of September 2026 and tracks 1,113 professional contacts across them, including 462 with verified work emails. Across Australia, Sydney is the largest hub for this category.

This list covers retrofit consultants headquartered in Sydney, 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

77Companies

1,113Contacts tracked

462Verified emails

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The 25 largest retrofit consultants based in Sydney, Australia

Ranked by team size

Top 25 of 77 retrofit consultants based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to retrofit consultants: 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	Aston Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	51-200	95 contacts →
	Indirect evidence “We engineer environments that enhance the human experience.” Source: RevenueBase Database · checked Sep 29, 2026
2	E-Lab Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	51-200	84 contacts →
	Indirect evidence “Where Engineering & Science Inspire Design.” Source: RevenueBase Database · checked Sep 29, 2026
3	Triaxial Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	51-200	57 contacts →
	Indirect evidence “Established in 2012, Triaxial Consulting are a firm of Consulting Civil and Structural Engineers, who provide a suite of specialist consulting engineering services, to all…” Source: RevenueBase Database · checked Sep 29, 2026
4	Witt Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	43 contacts →
	Indirect evidence “Specialist engineers consulting in the fields of temporary works, structural, geotechnical and heritage reuse.” Source: RevenueBase Database · checked Sep 29, 2026
5	Construction Services And Infrastructure	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	42 contacts →
	Partial 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
6	DBS Consulting Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	36 contacts →
	Indirect evidence “With a vision to whole-heartedly put their clients first, and as business owners themselves, the DBS team know the importance of clear communication, concise advice and innovative…” Source: RevenueBase Database · checked Sep 29, 2026
7	Cadigal Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	36 contacts →
	Indirect evidence “Cadigal Group is a wholly Australian employee owned company that specialises in providing consulting engineering services for the property sector.” Source: RevenueBase Database · checked Sep 29, 2026
8	Dunnings Consulting Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “Dunnings Consulting Engineers is a boutique team of consulting structural engineers and draftsmen with over 100 years of experience from top tier consultancies.” Source: RevenueBase Database · checked Sep 29, 2026
9	Rickard Engineering	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	21 contacts →
	Indirect evidence “Charles Rickard is one of Australia’s most sought-after engineers who has built a solid reputation through delivering quality, trust and innovation within his field.” Source: RevenueBase Database · checked Sep 29, 2026
10	Elegant Engineering Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	21 contacts →
	Indirect evidence “Consulting structural & civil engineers who help clients achieve their ambitious visions.” Source: RevenueBase Database · checked Sep 29, 2026
11	Kingle Engineering	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “More Than 50 Years Of Structural Excellence.” Source: RevenueBase Database · checked Sep 29, 2026
12	Centric Building Services Engineers	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	14 contacts →
	Indirect 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
13	GWA Consultants Australia PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial 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
14	LEO & Associates Consulting Engineers PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	10 contacts →
	Indirect evidence “We are an engineering consulting firm of qualified engineers specialising in remedial, structural and all things surrounding the existing built environment.” Source: RevenueBase Database · checked Sep 29, 2026
15	Matt Shuter & Associates MSA	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	9 contacts →
	Partial evidence “Matt Shuter & Associates (MSA) are a Sydney-based team of specialist Building Code Consultants, Accessibility Consultants and Building Certifiers helping deliver Australia’s…” Source: RevenueBase Database · checked Sep 29, 2026
16	O&s Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	9 contacts →
	Indirect evidence “O&S Consulting is taking Building Service Advisory in a new direction.” Source: RevenueBase Database · checked Sep 29, 2026
17	Structure Consulting Engineers	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “At Structure, we believe engineering should unlock design, not constrain it.” Source: RevenueBase Database · checked Sep 29, 2026
18	Excelo	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “Excelo Consulting Engineers is a young & dynamic team of Engineers specialising in structural, remedial and façade engineering.” Source: RevenueBase Database · checked Sep 29, 2026
19	Nutbrook Engineering Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	6 contacts →
	Indirect evidence “We specialise in improving assets through enhancing building services.” Source: RevenueBase Database · checked Sep 29, 2026
20	TRACA	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “We are an Australian consulting engineering consulting and design firm that has gained an extensive range of experience in large infrastructure & building services, electricity…” Source: RevenueBase Database · checked Sep 29, 2026
21	Team Catalyst	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “We help buildings reduce greenhouse emissions by improving energy efficiency and occupant comfort!” Source: RevenueBase Database · checked Sep 29, 2026
22	IA Engineering & Consultancy PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “Engineering & Designing” Source: RevenueBase Database · checked Sep 29, 2026
23	Strust	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “STRUST.” Source: RevenueBase Database · checked Sep 29, 2026
24	Timberxp	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “TimberXP is an Australian structural engineering consultancy, headquartered in Sydney, specialising in the design and development of innovative, sustainable and cost-efficient…” Source: RevenueBase Database · checked Sep 29, 2026
25	AI Consultancy	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “Ai is a leading consultancy firm, providing specialist built-environment BCA and Accessibility (DDA) compliance services.” 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 consultants. 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 consultants.
Partial evidence: Its own public description names part of retrofit consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name retrofit consultants. 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 77 retrofit consultants based in Sydney, Australia

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Retrofit consultants based in Sydney, Australia at a glance

As of Sep 29, 2026

41.5%Verified-email coverage

14.5Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 77 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 consultants, 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 Sydney, Australia whose own description of what they do matches “retrofit consultants”. 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 consultants), 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 consultants, and records with no verified work email. Companies headquartered outside Sydney 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, 462 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 consultants by metro in Australia

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 consultants, 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 consultants are there based in Sydney, Australia?

RevenueBase identified 77 retrofit consultants headquartered in Sydney, 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?

Aston Consulting, headquartered in Sydney, tops this list with the largest team on record.

Which city in Australia has the most retrofit consultants?

Sydney leads Australia with 77 headquartered companies, followed by Melbourne (65) and Brisbane (26).

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 462 verified decision-maker contacts tracked across these 77 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.