Company lists · Data refreshed September 2026

Top 25 Environmental engineering construction firms based in Sydney, Australia

Name: Environmental engineering construction firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 75 companies tracked

RevenueBase identified 75 environmental engineering construction firms headquartered in Sydney, Australia as of September 2026 and tracks 844 professional contacts across them, including 419 with verified work emails. Sydney is the largest hub.

This list covers environmental engineering construction firms 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 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

75Companies

844Contacts tracked

419Verified emails

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The 25 largest environmental engineering construction firms based in Sydney, Australia

Ranked by team size

Top 25 of 75 environmental engineering construction firms based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to environmental engineering construction 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	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	201-500	262 contacts →
	Partial evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 16, 2026
2	Chalouhi	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 2026	51-200	67 contacts →
	Strong evidence “Chalouhi is a leading civil engineering and construction company with extensive experience in the industry.” Source: RevenueBase Database · checked Sep 16, 2026
3	Triaxial Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	51-200	57 contacts →
	Partial 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 16, 2026
4	Samsung C&t Corporation Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	n/a	57 contacts →
	Indirect evidence “Over the past half-century, Samsung C&T’s E&C Group has worked diligently to deliver the best value-added services to our clients by utilizing our top-tier talent and technical…” Source: RevenueBase Database · checked Sep 16, 2026
5	Wsce Warren Smith Consulting Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	51-200	40 contacts →
	Partial evidence “WSce is a multi-discipline Australian-owned consulting engineering firm specialising in civil, water, hydraulic, fire services (wet & dry fire) and specialty water and wasterwater…” Source: RevenueBase Database · checked Sep 16, 2026
6	Cono Services	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	11-50	35 contacts →
	Partial evidence “At CONO Services, we are a leading provider of comprehensive civil construction solutions, specialising in demolition, remediation, excavation, civil construction, and plant hire…” Source: RevenueBase Database · checked Sep 16, 2026
7	Centric Building Services Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 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 16, 2026
8	Aargus PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	51-200	13 contacts →
	Indirect evidence “The Aargus Group is a fully owned and operated Australian company that has been structured and tailored to suit market needs.” Source: RevenueBase Database · checked Sep 16, 2026
9	Cirillo Civil Group Australia PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	51-200	11 contacts →
	Partial evidence “Cirillo Civil Group is a full-service civil construction company, specialising in site remediation, soft-scape landscaping, bulk earthworks, detailed excavation and…” Source: RevenueBase Database · checked Sep 16, 2026
10	Surex Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	10 contacts →
	Partial evidence “SUREX Consulting is setting a new benchmark for premium engineering services, delivering exceptional designs that exceed expectations and ensure buildings are built to the highest…” Source: RevenueBase Database · checked Sep 16, 2026
11	S&g Consultants PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “S&G Consultants Pty Ltd is a dynamic organisation founded in 2003 by Managing Director Samer El Haddad in response to a market demand for integrated consulting engineering…” Source: RevenueBase Database · checked Sep 16, 2026
12	N2 Engineering Consultants	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	10 contacts →
	Partial evidence “n2 Engineering Consultants provides innovative, reliable, and Australian-designed engineering solutions.” Source: RevenueBase Database · checked Sep 16, 2026
13	Geba Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
14	Sphere Infrastructure Partners	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial evidence “Sphere was founded in 2018 in recognition of the need for advisors with specific environmental sector experience, development capability and expertise in delivering complex…” Source: RevenueBase Database · checked Sep 16, 2026
15	Aitken Civil Engineering	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	11-50	5 contacts →
	Partial evidence “Aitken Civil is staffed by a group of straight-shooting and experienced construction professionals who have a track record of delivering landmark civil works for our clients in…” Source: RevenueBase Database · checked Sep 16, 2026
16	Metric Engineering	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “Metric Engineering is a structural and stormwater engineering firm that specializes in designing robust and resilient infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
17	Hyten Engineering	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “HYTEN is a boutique firm focused on customer satisfaction and design integrity.” Source: RevenueBase Database · checked Sep 16, 2026
18	Compliance Health & Environmental Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “Compliance Health and Environmental Consulting (CHEC) is an environmental consulting firm servicing Sydney and regional NSW.” Source: RevenueBase Database · checked Sep 16, 2026
19	DXJ Recruitment	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	4 contacts →
	Strong evidence “Engineering Recruitment for - Ground Engineering (Geotechnical, Geological, piling); Environmental (Contaminated Lands, Management, Remediation); OHS/WHS (Occupational Hygiene…” Source: RevenueBase Database · checked Sep 16, 2026
20	IA Engineering & Consultancy PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “Engineering & Designing” Source: RevenueBase Database · checked Sep 16, 2026
21	Cadmus Engineering	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	3 contacts →
	Strong evidence “At Cadmus Engineering, we support construction projects throughout NSW with sustainable civil and structural engineering designs and solutions.” Source: RevenueBase Database · checked Sep 16, 2026
22	Diversified Group PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 2026	11-50	3 contacts →
	Strong evidence “Diversified is an integrated construction and consulting company that specialises in building and construction, project management and environmental consulting.” Source: RevenueBase Database · checked Sep 16, 2026
23	Land Risk Environmental	Partial evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	2 contacts →
	Partial evidence “Land Risk Environmental Pty Ltd (LRE) specialise in technical due diligence environmental advisory services involving contaminated land and hazardous materials.” Source: RevenueBase Database · checked Sep 16, 2026
24	consult.in	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	2 contacts →
	Strong evidence “Consult.In provide project management, technical engineering and environmental management services to NSW government and private sector companies.” Source: RevenueBase Database · checked Sep 16, 2026
25	LP Consulting Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence 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: environmental engineering construction 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 environmental engineering construction firms.
Partial evidence: Its own public description names part of environmental engineering construction firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental engineering construction 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 75 environmental engineering construction firms based in Sydney, Australia

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Environmental engineering construction firms based in Sydney, Australia at a glance

As of Sep 16, 2026

49.6%Verified-email coverage

11.3Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

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 75 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 environmental engineering construction 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 Sydney, Australia whose own description of what they do matches “environmental engineering construction 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 environmental engineering construction 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 environmental engineering construction firms, 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, 419 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.

Environmental engineering construction firms by metro in Australia

Environmental engineering construction firms in Sydney75
Environmental engineering construction firms in Melbourne39
Environmental engineering construction firms in Brisbane36
Environmental engineering construction firms in Perth27

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 environmental engineering construction 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 environmental engineering construction firms are there based in Sydney, Australia?

RevenueBase identified 75 environmental engineering construction firms 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?

Jbs&g, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most environmental engineering construction firms?

Sydney leads with 75 headquartered companies, followed by Melbourne (39) and Brisbane (36).

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 419 verified decision-maker contacts tracked across these 75 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.