Company lists · Data refreshed September 2026

Top 25 Retrofit contractors based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 294 companies tracked

RevenueBase identified 294 retrofit contractors headquartered in Australia as of September 2026 and tracks 1,742 professional contacts across them, including 572 with verified work emails. Melbourne is the largest hub.

This list covers retrofit contractors 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 17, 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 17, 2026 86% judged on-target in blind review

294Companies

1,742Contacts tracked

572Verified emails

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The 25 largest retrofit contractors based in Australia

Ranked by team size

Top 25 of 294 retrofit contractors based in Australia, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to retrofit contractors: 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	Fletcher Insulation	Indirect evidence	Dandenong South, AustraliaHQ checked Sep 17, 2026	201-500	147 contacts →
	Indirect evidence “Fletcher Insulation stands as a leading Australian manufacturer, distributor, and technical support provider for the building construction industry in insulation.” Source: RevenueBase Database · checked Sep 17, 2026
2	Planet Plumbing Group	Indirect evidence	Campsie, AustraliaHQ checked Sep 17, 2026	201-500	135 contacts →
	Indirect evidence “Planet Plumbing is an Australian-owned private company with various projects completed throughout Australia.” Source: RevenueBase Database · checked Sep 17, 2026
3	Arnold	Indirect evidence	Salisbury, AustraliaHQ checked Sep 17, 2026	51-200	53 contacts →
	Indirect evidence “Since 1974 Arnold has been a constant in the Brisbane Electrical Industry.” Source: RevenueBase Database · checked Sep 17, 2026
4	Auspro Group	Indirect evidence	Point Cook, AustraliaHQ checked Sep 17, 2026	11-50	44 contacts →
	Indirect evidence “Established in 2006, Auspro Group is an accredited energy solutions provider, successfully installing energy upgrades to homes and businesses across Australia whilst protecting…” Source: RevenueBase Database · checked Sep 17, 2026
5	Vast Electrical	Indirect evidence	South Melbourne, AustraliaHQ checked Sep 17, 2026	51-200	41 contacts →
	Indirect evidence “Vast Electrical is a Melbourne-based company that provides quality electrical solutions to both commercial and industrial clients.” Source: RevenueBase Database · checked Sep 17, 2026
6	MAC Trade Services	Indirect evidence	Rose Park, AustraliaHQ checked Sep 17, 2026	11-50	40 contacts →
	Indirect evidence “In a world that, today, recognises the need to re-evaluate energy use, embrace renewable alternatives, and live more sustainably, MAC Trade Services commit ourselves to building…” Source: RevenueBase Database · checked Sep 17, 2026
7	Aussie Greenmarks	Indirect evidence	Ravenhall, AustraliaHQ checked Sep 17, 2026	11-50	37 contacts →
	Indirect evidence “Aussie Greenmarks is an Australian-owned company, established in 2011.” Source: RevenueBase Database · checked Sep 17, 2026
8	Fore Group	Indirect evidence	Canberra, AustraliaHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “Fore Group specialises in fit-out and refurbishment, offering the expertise, technical capabilities, and dedicated team needed to successfully deliver your project.” Source: RevenueBase Database · checked Sep 17, 2026
9	Bugardi	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “An emerging provider of construction and contracting services statewide.” Source: RevenueBase Database · checked Sep 17, 2026
10	Envirogroup	Indirect evidence	Coburg North, AustraliaHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “EnviroGroup EnviroGroup is a specialist provider of renewable energy products and systems for commercial applications, government clients and residential home owners.” Source: RevenueBase Database · checked Sep 17, 2026
11	Dapcor	Partial evidence	Botany, AustraliaHQ checked Sep 17, 2026	11-50	29 contacts →
	Partial evidence “Dapcor is a remedial construction and building refurbishment contractor delivering complex remedial building works across Sydney and New South Wales.” Source: RevenueBase Database · checked Sep 17, 2026
12	Glower	Indirect evidence	Melbourne, AustraliaHQ checked Sep 17, 2026	11-50	26 contacts →
	Indirect evidence “Glower upgrades your inefficient household and business products to new sustainable ones, saving your wallet and the world.” Source: RevenueBase Database · checked Sep 17, 2026
13	Leading Edge Automation	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 17, 2026	51-200	25 contacts →
	Indirect evidence “We use the latest technology to offer customised integrated building solutions and energy services that will empower you to meet your comfort, energy and operational cost…” Source: RevenueBase Database · checked Sep 17, 2026
14	MAX Build	Indirect evidence	Potts Point, AustraliaHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “We find solutions to complex remedial challenges in both residential and commercial sectors.” Source: RevenueBase Database · checked Sep 17, 2026
15	H L Mullane & SON PTY LTD	Indirect evidence	Sandgate, AustraliaHQ checked Sep 17, 2026	201-500	21 contacts →
	Indirect evidence “Mullane have provided Peace of Mind, Right on Time to the Newcastle, Hunter and Central Coast since 1925, by delivering the highest quality plumbing, drainage, gas, roofing and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Eco33 Private Limited	Indirect evidence	Perth, AustraliaHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “providing customers the benefits of cost effective Energy Conservation solutions including improved indoor Air quality, proposed outcome 100% commercially guaranteed.” Source: RevenueBase Database · checked Sep 17, 2026
17	System Solutions Engineering PTY LTD	Partial evidence	Eastwood, AustraliaHQ checked Sep 17, 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 17, 2026
18	Ecosaver Australia	Indirect evidence	Derrimut, AustraliaHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Ecosaver is an Australian owned and operated company established in 2017.” Source: RevenueBase Database · checked Sep 17, 2026
19	Ecomaster Thermal Energy Efficiency	Partial evidence	Preston, AustraliaHQ checked Sep 17, 2026	1-10	17 contacts →
	Partial evidence “Established in 2004, ecoMaster is a multi-award winning Australian business specialising in the thermal energy efficiency retrofit of existing homes.” Source: RevenueBase Database · checked Sep 17, 2026
20	Energy Efficiency Group	Indirect evidence	Wangara, AustraliaHQ checked Sep 17, 2026	51-200	16 contacts →
	Indirect evidence “Energy Efficiency Group (EEG) is a national specialist delivering industry-leading insulation and energy-efficiency solutions across residential, commercial, industrial, and…” Source: RevenueBase Database · checked Sep 17, 2026
21	Voltora Industries	Partial evidence	Brendale, AustraliaHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “Voltora Industries is a Brisbane electrical contractor with a simple goal - give homes and businesses across the city a service you’d expect from a local team that actually cares…” Source: RevenueBase Database · checked Sep 17, 2026
22	BIM Remedial Sydney	Indirect evidence	Frenchs Forest, AustraliaHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “At BiM Remedial, we’re Sydney’s trusted name for premier remedial building solutions.” Source: RevenueBase Database · checked Sep 17, 2026
23	Butler Electrical Victoria	Indirect evidence	Moorabbin, AustraliaHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Butler Electrical Victoria* is an A.G.” Source: RevenueBase Database · checked Sep 17, 2026
24	Astills Electrical Services	Partial evidence	Kunda Park, AustraliaHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Astill’s Electrical is a trusted electrical contractor servicing the Sunshine Coast and South Burnett regions, delivering reliable electrical, solar, air conditioning and…” Source: RevenueBase Database · checked Sep 17, 2026
25	Sagecon PTY LTD	Partial evidence	Glen Iris, AustraliaHQ checked Sep 17, 2026	51-200	11 contacts →
	Partial evidence “Melbourne based air conditioning contractor, specialising in high density residential, hotels, aged care and offices.” Source: RevenueBase Database · checked Sep 17, 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 contractors. 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 contractors.
Partial evidence: Its own public description names part of retrofit contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name retrofit contractors. 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 294 retrofit contractors based in Australia

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Retrofit contractors based in Australia at a glance

As of Sep 17, 2026

32.8%Verified-email coverage

5.9Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · Melbourne

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

173

11-50

100

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 294 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 contractors, 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 contractors”. 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 contractors), 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 contractors, 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, 572 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 17, 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 retrofit contractors, 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 contractors are there based in Australia?

RevenueBase identified 294 retrofit contractors 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?

Fletcher Insulation, headquartered in Dandenong South, tops this list with the largest team on record.

Which city has the most retrofit contractors?

Melbourne leads with 22 headquartered companies, followed by Sydney (21) and Perth (7).

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 572 verified decision-maker contacts tracked across these 294 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 17, 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.