Company lists · Data refreshed September 2026
Top 25 Energy efficient building companies based in Belgium
RevenueBase identified 255 energy efficient building companies headquartered in Belgium as of September 2026 and tracks 1,816 professional contacts across them, including 730 with verified work emails. Bruxelles is the largest hub.
This list covers energy efficient building companies headquartered in Belgium, 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.
The 25 largest energy efficient building companies based in Belgium
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 106 contacts → | ||||
Partial evidence “Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 69 contacts → | ||||
Indirect evidence “Missie Bostoen Group wil op een no nonsense manier haar maatschappelijke verantwoordelijkheid nemen voor een betere wereld voor onze kinderen en kleinkinderen, door het wonen CO²…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 63 contacts → | ||||
Indirect evidence “We inspireren en helpen om in een menselijke sfeer samen gebouwen juister te ontwerpen, bouwen en onderhouden.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 48 contacts → | ||||
Partial evidence “A2M is an international practice driven by an ardent belief in the possibilities of modern architecture and a keen curiosity about building physics, our interdisciplinary team…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 47 contacts → | ||||
Indirect evidence “architecture and urban planning.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 38 contacts → | ||||
Indirect evidence “A+ Concept est un bureau d'études composé d'experts énergétiques et ingénieurs spécialisés dans les techniques du bâtiment.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 37 contacts → | ||||
Indirect evidence “Ecohuis is een bouwbedrijf gespecialiseerd in houtskeletbouwwoningen.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 35 contacts → | ||||
Partial evidence “Bureau d'Etudes en Design Energétique du Bâtiment, MK Engineering s'est forgé une solide expérience en conception très basse énergie avec ses services de Conseil aux Architecte et…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 33 contacts → | ||||
Indirect evidence “Onze architecten voelen zich thuis in de stad, maar zeker ook in het landelijk gebied.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 29 contacts → | ||||
Indirect evidence “Als Limburgs meest vooraanstaande sleutel-op-de-deur firma adviseren wij u geheel op maat en bouwen wij voor ieders budget.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 27 contacts → | ||||
Partial evidence “Energiezuinige kwaliteitswoningen in houtskeletbouw.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 27 contacts → | ||||
Indirect evidence “Quito existe pour offrir une solution coordonnée aux propriétaires cherchant à améliorer la performance énergétique de leur bien le plus simplement et esthétiquement possible afin…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 25 contacts → | ||||
Partial evidence “We are in service to our clients to help them with the conception and building of bio-ecological buildings with following aspects - healthy - natural building materials - low- or…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 25 contacts → | ||||
Indirect evidence “SIA Architects désigne la Société Internationale d’Architecture, basée en Belgique et au Grand-Duché de Luxembourg, aussi active à l’étranger.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 23 contacts → | ||||
Indirect evidence “Ecopuur bekijkt het verbruikspatroon van je huidige of nieuwe woning.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 23 contacts → | ||||
Indirect evidence “Promotion de bâtiment Thermo Efficace®.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 23 contacts → | ||||
Indirect evidence “Soltis est une entreprise créée en 2008 qui accompagne professionnels et particuliers dans la mise en place de solutions vertes et rentables avec un seul but: améliorer…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 20 contacts → | ||||
Partial evidence “ISTEMA is een gespecialiseerd ingenieurs- en studiebureau voor technieken en energie in gebouwen.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 20 contacts → | ||||
Indirect evidence “Construction de maisons passives, ossature bois, basse consommation.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 19 contacts → | ||||
Strong evidence “CENERGIE delivers consulting, design, engineering and project management services for energy-efficient and sustainable buildings during their entire lifecycle.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 contacts → | ||||
Indirect evidence “In the early 80s Stéphane Beel founded his own architectural office.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 17 contacts → | ||||
Indirect evidence “Martens Van Caimere Architecten is een Gents architectenbureau dat zich specialiseert in realisaties met een hoge duurzame en architecturale ambitie, zowel voor overheden…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 17 contacts → | ||||
Indirect evidence “nergie zonder zorgen Ga je bouwen?” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 17 contacts → | ||||
Partial evidence “RCR is a design office for building services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 17 contacts → | ||||
Partial evidence “Bij Peritas bieden we onze klanten niet alleen betrouwbare, energie-efficiënte oplossingen voor hun engineeringprojecten, maar zetten we ook in op innovatie en efficiëntie.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
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: energy efficient building 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 energy efficient building companies.
- Partial evidence
- Its own public description names part of energy efficient building companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name energy efficient building 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 255 energy efficient building companies based in Belgium
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Energy efficient building companies based in Belgium at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 255 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 energy efficient building 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 Belgium whose own description of what they do matches “energy efficient building 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 energy efficient building 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 energy efficient building companies, and records with no verified work email. Companies headquartered outside Belgium 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, 730 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.
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 energy efficient building 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 energy efficient building companies are there based in Belgium?
RevenueBase identified 255 energy efficient building companies headquartered in Belgium 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?
Reno Energy, headquartered in Liege, tops this list with the largest team on record.
Which city has the most energy efficient building companies?
Bruxelles leads with 11 headquartered companies, followed by Gent (9) and Liege (8).
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 730 verified decision-maker contacts tracked across these 255 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.
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