Ranking · Brussels · NACE 43
Specialised construction activities: the largest companies in Brussels
As of 12 Nov 2026, 4,314 companies in Specialised construction activities (NACE 43) in Brussels publish total assets in recent accounts (financial years 2023 to 2026). The top 10 account for €1.08bn, out of €2.71bn for all of them; median total assets are 117,807 €. Atlas International Investments leads with €527.9m (financial year 2025).
Top 50 · Specialised construction activities · Brussels
Ranked by total assets in the latest filed accounts. This is a size criterion, not an assessment.
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Atlas International Investments 1140 Evere | €527.9m | — | €527.9m | — | 2025 |
| 2 | Imtech Belgium OU en Francais Imtech Belgique OU en Neerlandais Imtech Belgie 1070 Anderlecht | €99.2m | €192.3m | €37.5m | 568.2 | 2025 |
| 3 | TramContractors 1000 Brussels | €90.3m | €4.64m | €4.35m | — | 2025 |
| 4 | Cegelec Electrical Solutions 1130 Brussels | €70.1m | €73.9m | €15.2m | 237.9 | 2025 |
| 5 | TK Elevator Belgium 1130 Brussels | €61.7m | €59.1m | €15.7m | 280.9 | 2025 |
| 6 | VINCI Facilities Belgium 1000 Brussels | €61.4m | €94.6m | €10.1m | 458.4 | 2025 |
| 7 | Electrotechnique et Mecanique Putman Freres 1070 Anderlecht | €58.8m | €82.3m | €20.5m | 333.7 | 2025 |
| 8 | Ilonato 1130 Brussels | €40.0m | €47.5m | €6.34m | 45.8 | 2025 |
| 9 | Technical Equipment Maintenance-Technilift 1210 Saint-Josse-ten-Noode | €36.9m | €42.2m | €8.96m | 266.8 | 2025 |
| 10 | Go-Solar 1050 Ixelles | €31.5m | €6.52m | €30.4m | 23.2 | 2025 |
| 11 | Cegelec Industry 1130 Brussels | €27.7m | €71.4m | €5.85m | 394.3 | 2025 |
| 12 | G4S Security Systems 1000 Brussels | €24.3m | €27.5m | €11.5m | 112.8 | 2025 |
| 13 | STRIMA ENTREPRISE GéNéRALE DE CONSTRUCTIONS 1130 Brussels | €22.0m | — | 494,918 € | 34.2 | 2025 |
| 14 | D’Ieteren Energy 1050 Ixelles | €19.7m | €26.2m | €4.29m | 26.0 | 2025 |
| 15 | Arkia 1140 Evere | €13.5m | — | €2.85m | — | 2025 |
| 16 | Gevele 1050 Ixelles | €13.4m | €3.69m | €6.74m | 2.0 | 2025 |
| 17 | Weishaupt 1070 Anderlecht | €13.3m | €22.3m | €7.63m | 76.0 | 2025 |
| 18 | ISB Building Technics 1210 Saint-Josse-ten-Noode | €13.2m | €25.3m | €2.73m | 87.8 | 2025 |
| 19 | Vimar 1030 Schaerbeek | €12.1m | €26.7m | €6.24m | 49.4 | 2025 |
| 20 | Cegelec Fire Solutions 1130 Brussels | €10.8m | €19.2m | €2.45m | 69.0 | 2025 |
| 21 | I.A.B.N 1030 Schaerbeek | €10.6m | — | €3.52m | 21.2 | 2025 |
| 22 | Les Entreprises Esmer 1190 Forest | €10.5m | €21.0m | €4.13m | 84.3 | 2025 |
| 23 | Flexiwatt 1140 Evere | €9.93m | — | €1.83m | — | 2025 |
| 24 | KDB Belgium 1000 Brussels | €9.90m | €12.1m | €3.87m | 32.8 | 2025 |
| 25 | Setip-Gcube 1083 Ganshoren | €9.76m | €20.3m | €3.37m | 58.2 | 2025 |
| 26 | TROX Belgium 1070 Anderlecht | €9.37m | €27.9m | €1.39m | 44.5 | 2024 |
| 27 | Elizan 1020 Brussels | €8.56m | — | €2.51m | — | 2025 |
| 28 | ABI-C.V.R. 1130 Brussels | €8.34m | €19.3m | €2.96m | 13.1 | 2025 |
| 29 | Landexplo Maaseik 1030 Schaerbeek | €7.77m | — | €2.00m | — | 2025 |
| 30 | Place de l'Université 25 1030 Schaerbeek | €7.72m | — | €1.54m | — | 2025 |
| 31 | Rimann 1070 Anderlecht | €7.67m | €2.32m | €2.40m | — | 2024 |
| 32 | Immo Consult International - K Consult 1160 Auderghem | €7.37m | — | −370,698 € | — | 2025 |
| 33 | Actyon 1180 Uccle | €7.31m | — | 575,223 € | — | 2025 |
| 34 | Relaitron 1070 Anderlecht | €6.99m | €15.1m | €1.32m | 88.8 | 2024 |
| 35 | Fontec 1170 Watermael-Boitsfort | €6.92m | €15.9m | €1.57m | 19.6 | 2025 |
| 36 | Casamax 1050 Ixelles | €6.69m | — | €5.91m | — | 2025 |
| 37 | H&MV Engineering Belgium 1000 Brussels | €6.67m | €19.2m | 307,296 € | 1.7 | 2025 |
| 38 | Juffern SA 1000 Brussels | €6.54m | — | €2.40m | 43.3 | 2025 |
| 39 | Instore 1050 Ixelles | €6.46m | — | €1.18m | 4.4 | 2025 |
| 40 | Entreprises Miot 1130 Brussels | €6.27m | €7.45m | 884,103 € | 17.1 | 2025 |
| 41 | Alfa Sun 1082 Berchem-Sainte-Agathe | €6.20m | — | €2.15m | 22.3 | 2024 |
| 42 | Zandoli 1020 Brussels | €6.04m | — | 714,104 € | — | 2025 |
| 43 | HeCoS 1210 Saint-Josse-ten-Noode | €5.88m | 575,485 € | €2.42m | — | 2025 |
| 44 | Batisud 1140 Evere | €5.66m | — | €4.36m | 0.3 | 2025 |
| 45 | Peklass 1000 Brussels | €5.48m | — | €2.73m | — | 2025 |
| 46 | Hasmetal 1030 Schaerbeek | €5.45m | — | 375,223 € | 16.0 | 2025 |
| 47 | Timber Tailor 1050 Brussels | €5.34m | — | €1.53m | 24.7 | 2025 |
| 48 | Multi - Build 1070 Anderlecht | €5.33m | — | 357,629 € | 6.9 | 2025 |
| 49 | Amodio Bruno Services 1070 Anderlecht | €5.19m | — | €4.73m | 0.5 | 2025 |
| 50 | Smart Eco Projects 1082 Berchem-Sainte-Agathe | €4.99m | — | −545,996 € | — | 2025 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Specialised construction activities across Belgium → All sectors · Brussels →
Other sectors · Brussels
- 01 Crop and animal production, hunting and related service activities121
- 02 Forestry and logging47
- 09 Mining support service activities12
- 10 Manufacture of food products515
- 11 Manufacture of beverages48
- 13 Manufacture of textiles65
- 14 Manufacture of wearing apparel101
- 15 Manufacture of leather and related products of other materials15
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials91
- 17 Manufacture of paper and paper products24
- 18 Printing and reproduction of recorded media269
- 20 Manufacture of chemicals and chemical products81
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations75
- 22 Manufacture of rubber and plastic products40
- 23 Manufacture of other non-metallic mineral products62
- 24 Manufacture of basic metals18
- 25 Manufacture of fabricated metal products, except machinery and equipment236
- 26 Manufacture of computer, electronic and optical products82
- 27 Manufacture of electrical equipment61
- 28 Manufacture of machinery and equipment n.e.c.62
- 29 Manufacture of motor vehicles, trailers and semi-trailers39
- 30 Manufacture of other transport equipment25
- 31 Manufacture of furniture85
- 32 Other manufacturing215
- 33 Repair, maintenance and installation of machinery and equipment187
- 35 Electricity, gas, steam and air conditioning supply145
- 36 Water collection, treatment and supply10
- 37 Sewerage24
- 38 Waste collection, recovery and disposal activities62
- 39 Remediation activities and other waste management service activities15
- 41 Construction of residential and non-residential buildings1,543
- 42 Civil engineering211
- 46 Wholesale trade4,422
- 47 Retail trade7,389
- 49 Land transport and transport via pipelines2,580
- 50 Water transport23
- 51 Air transport19
- 52 Warehousing, storage and support activities for transportation291
- 53 Postal and courier activities224
- 55 Accommodation465
- 56 Food and beverage service activities4,905
- 58 Publishing activities375
- 59 Motion picture, video and television programme production, sound recording and music publishing activities969
- 60 Programming, broadcasting, news agency and other content distribution activities81
- 61 Telecommunication180
- 62 Computer programming, consultancy and related activities4,698
- 63 Computing infrastructure, data processing, hosting and other information service activities464
- 64 Financial service activities, except insurance and pension funding2,600
- 65 Insurance, reinsurance and pension funding, except compulsory social security86
- 66 Activities auxiliary to financial services and insurance activities801
- 68 Real estate activities7,416
- 69 Legal and accounting activities4,484
- 70 Activities of head offices and management consultancy8,222
- 71 Architectural and engineering activities; technical testing and analysis1,857
- 72 Scientific research and development182
- 73 Activities of advertising, market research and public relations2,417
- 74 Other professional, scientific and technical activities796
- 75 Veterinary activities58
- 77 Rental and leasing activities307
- 78 Employment activities262
- 79 Travel agency, tour operator and other reservation service and related activities212
- 80 Investigation and security activities72
- 81 Services to buildings and landscape activities1,008
- 82 Office administrative, office support and other business support activities1,708
- 84 Public administration and defence; compulsory social security69
- 85 Education817
- 86 Human health activities4,965
- 87 Residential care activities243
- 88 Social work activities without accommodation479
- 90 Arts creation and performing arts activities674
- 91 Libraries, archives, museums and other cultural activities38
- 92 Gambling and betting activities75
- 93 Sports activities and amusement and recreation activities483
- 94 Activities of membership organisations893
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles511
- 96 Personal service activities1,443
Municipalities with the most companies in the sector · Brussels
Frequently asked questions
Which is the largest company in Specialised construction activities in Brussels?
By total assets, it is Atlas International Investments (€527.9m, financial year 2025).
How many companies in Specialised construction activities in Brussels are ranked?
4,314 out of 4,562 active companies in the sector with their registered office in the area: those whose latest accounts are less than 3 years old.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
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Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 12 Nov 2026.