Company lists · Data refreshed September 2026

Top 24 Real estate sustainability software companies based in Australia

RevenueBase identified 78 real estate sustainability software companies headquartered in Australia as of September 2026 and tracks 832 professional contacts across them, including 243 with verified work emails. Sydney is the largest hub.

This list covers real estate sustainability software 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
78Companies
832Contacts tracked
243Verified emails
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The 24 largest real estate sustainability software companies based in Australia

Ranked by team size
Top 24 of 78 real estate sustainability software 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 real estate sustainability software 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMelbourne, AustraliaHQ checked Sep 29, 202611-5046 contacts →

Partial evidence

“Optima Technology Group is a software technology company that offers accurate, automated and secure energy data management solutions now focused on Net Zero reporting as well as…”

Source: RevenueBase Database · checked Sep 29, 2026
2Strong evidenceSydney, AustraliaHQ checked Sep 29, 202651-20045 contacts →

Strong evidence

“FLNT is an Australian commercial real estate technology company that specialises in software solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceBrunswick, AustraliaHQ checked Sep 29, 202611-5027 contacts →

Indirect evidence

“HIP V.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceSydney, AustraliaHQ checked Sep 29, 202611-5020 contacts →

Partial evidence

“NettZero is a 100% Australian owned and operated Sustainability Consultancy which caters to a multitude of sustainability demands concerning on Businesses.”

Source: RevenueBase Database · checked Sep 29, 2026
5Strong evidenceSawtell, AustraliaHQ checked Sep 29, 202611-5017 contacts →

Strong evidence

“REAL ESTATE SOFTWARE loved by over 7,500 agents across Australia and New Zealand With real estate businesses in mind, we have developed key performance solutions managed by our…”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceCurrumbin Valley, AustraliaHQ checked Sep 29, 202611-5016 contacts →

Partial evidence

“Informed 365 is an Australian based tech company that specialises solely on better sustainability outcomes.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceBaulkham Hills, AustraliaHQ checked Sep 29, 202611-5012 contacts →

Indirect evidence

“KangaSys | Smarter Insights.”

Source: RevenueBase Database · checked Sep 29, 2026
8Strong evidenceMelbourne, AustraliaHQ checked Sep 29, 202611-5010 contacts →

Strong evidence

“At Property Shell, we underpin the delivery of successful real estate developments, empowering you to manage, sell and deliver property with our state of the art property…”

Source: RevenueBase Database · checked Sep 29, 2026
9Strong evidenceBarangaroo, AustraliaHQ checked Sep 29, 202651-20010 contacts →

Strong evidence

“Romeciti is a real estate development business based in Sydney, Australia.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceSydney, AustraliaHQ checked Sep 29, 2026n/a10 contacts →

Strong evidence

“As of 2017 EstateMaster was acquired by Altus Group, a leading provider of software, data and expert services to the commercial real estate and development industries.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceAlbert Park, AustraliaHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“We understand the barriers between businesses and net zero.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceSurry Hills, AustraliaHQ checked Sep 29, 20261-107 contacts →

Partial evidence

“Aspire Sustainability Consulting offer a range of sustainability & energy efficiency services, from concept design to building operation.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceBrisbane City, AustraliaHQ checked Sep 29, 202611-507 contacts →

Indirect evidence

“iSystain drives both management and reporting processes across the full scope of Environment, Social and Governance (ESG) requirements.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceNewcastle, AustraliaHQ checked Sep 29, 20261-106 contacts →

Indirect evidence

“Graham A Brown & Associates is an Australian family-owned consultancy company formed in 1975.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceSydney, AustraliaHQ checked Sep 29, 202611-506 contacts →

Partial evidence

“We are a dedicated consultancy driven by a profound commitment to fostering sustainability across diverse sectors, including construction, commercial, industrial, and financial…”

Source: RevenueBase Database · checked Sep 29, 2026
16Strong evidenceMelbourne, AustraliaHQ checked Sep 29, 202651-2006 contacts →

Strong evidence

“PropTech Group is an MRI Software Company that provides industry leading software solutions for real estate estate professionals.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceBrisbane, AustraliaHQ checked Sep 29, 20261-106 contacts →

Indirect evidence

“At Arteh, we believe that climate action shouldn't be complicated, expensive, or out of reach.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceWorongary, AustraliaHQ checked Sep 29, 20261-105 contacts →

Indirect evidence

“At SeedHaus™ we provide both residential and commercial energy efficiency solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceMelbourne, AustraliaHQ checked Sep 29, 20261-105 contacts →

Indirect evidence

“PIECHOWSKI ENERGY IS AN ENERGY EFFICIENCY AND SUTAINABLE BUILDINGS SOULTIONS COMPANY.”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidenceGlebe, AustraliaHQ checked Sep 29, 20261-105 contacts →

Partial evidence

“The Fifth Estate is Australia’s leading independent business publisher of news, analysis and information for the sustainable property industry.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceMilton, AustraliaHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“Solaire creates homes where luxury, environment and technology all meet seamlessly.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceMilton, AustraliaHQ checked Sep 29, 202611-504 contacts →

Partial evidence

“Corearth develops and delivers high performance software and supporting services to meet the diverse needs of organisations across industries.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceCarina, AustraliaHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“We offer a varied array of services that we can provide from Energy Efficiency, Sustainability & Building advice.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidencePymble, AustraliaHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“Gradwell Consulting specialises in energy rating and sustainability consulting throughout Australia.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 24 of 78 real estate sustainability software companies based in Australia

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Real estate sustainability software companies based in Australia at a glance

As of Sep 29, 2026
29.2%Verified-email coverage
10.7Average contacts per company
1-10Median size (employees)
24.4%Largest-city concentration · Sydney
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
43
11-50
22
51-200
11
201-500
1
1,001-5,000
1

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 78 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 real estate sustainability software 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 “real estate sustainability software 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 real estate sustainability software 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 real estate sustainability software 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, 243 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.

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 real estate sustainability software 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 real estate sustainability software companies are there based in Australia?

RevenueBase identified 78 real estate sustainability software 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?

Optima Technology, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most real estate sustainability software companies?

Sydney leads with 19 headquartered companies, followed by Melbourne (11) and Adelaide (4).

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 243 verified decision-maker contacts tracked across these 78 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.