Architectural and engineering activities; technical testing and analysis: highest revenue in Brussels
As of 12 Nov 2026, 136 companies in Architectural and engineering activities; technical testing and analysis (NACE 71) in Brussels publish their revenue in recent accounts (financial years 2023 to 2026). The top 10 account for €1.27bn, out of €1.89bn for all of them; median revenue is 839,560 €. Tractebel Engineering leads with €332.1m (financial year 2025).
Top 50 · Architectural and engineering activities; technical testing and analysis · Brussels
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Tractebel Engineering 1000 Brussels | €350.5m | €332.1m | €176.4m | 1,326.4 | 2025 |
| 2 | Sweco 1000 Brussels | €286.7m | €315.2m | €73.8m | 1,951.9 | 2025 |
| 3 | TUC Rail 1060 Saint-Gilles | €124.1m | €182.1m | €24.9m | 730.6 | 2025 |
| 4 | Arcadis Belgium 1000 Brussels | €131.7m | €140.1m | €43.4m | 774.8 | 2025 |
| 5 | Luminus Solutions 1210 Saint-Josse-ten-Noode | €28.3m | €73.1m | €9.41m | 33.6 | 2025 |
| 6 | Elia Engineering 1000 Brussels | €25.9m | €51.3m | €15.4m | 284.6 | 2025 |
| 7 | A.I.B.V. 1070 Anderlecht | €35.5m | €50.6m | €20.6m | 416.9 | 2025 |
| 8 | Abylsen Belgium 1050 Brussels | €65.5m | €48.5m | €44.5m | 363.7 | 2025 |
| 9 | SENER Seraing CCGT 1050 Ixelles | €34.4m | €39.8m | −€4.70m | 7.4 | 2024 |
| 10 | Seco Belgium 1000 Brussels | €19.4m | €38.2m | €2.71m | 203.3 | 2025 |
| 11 | Enhesa 1050 Ixelles | €118.7m | €37.0m | €51.2m | 92.7 | 2025 |
| 12 | Agence Fédérale de Contrôle Nucléaire 1000 Brussels | €59.8m | €34.4m | €53.8m | 142.9 | 2025 |
| 13 | Shake Design and Build 1150 Woluwe-Saint-Pierre | €11.2m | €24.4m | €3.36m | 3.8 | 2025 |
| 14 | Sweco Architects 1000 Brussels | €16.3m | €21.0m | €12.3m | 23.4 | 2024 |
| 15 | European Control Services 1210 Saint-Josse-ten-Noode | €4.90m | €19.7m | 647,559 € | 145.8 | 2025 |
| 16 | Idexx Laboratories 1020 Brussels | €51.1m | €19.6m | €49.3m | 17.2 | 2025 |
| 17 | Certifer Belgorail 1000 Brussels | €14.4m | €18.9m | €10.3m | 29.1 | 2025 |
| 18 | Environmental Resources Management 1000 Brussels | €7.21m | €18.0m | €1.56m | 80.0 | 2026 |
| 19 | Bel V 1070 Anderlecht | €22.0m | €17.5m | €19.3m | 81.1 | 2025 |
| 20 | Sertius 1000 Brussels | €8.70m | €17.4m | €4.03m | 74.3 | 2025 |
| 21 | Association des Propriétaires de Récipients a Gaz comprimés, liquéfiés ou dissous 1120 Brussels | €7.53m | €16.8m | €5.33m | 117.9 | 2025 |
| 22 | Nalys 1150 Woluwe-Saint-Pierre | €5.54m | €16.7m | 954,271 € | 86.0 | 2025 |
| 23 | Buro II & Archi + I 1000 Brussels | €10.4m | €16.4m | €2.72m | 75.9 | 2025 |
| 24 | Wemanity Reply 1000 Brussels | €12.3m | €16.3m | €1.94m | 62.5 | 2025 |
| 25 | Syngenia 1000 Brussels | €4.51m | €16.3m | 797,466 € | 128.3 | 2025 |
| 26 | Isalys Consulting 1180 Uccle | €6.51m | €16.3m | €1.47m | 117.6 | 2025 |
| 27 | Engie Impact Belgium 1000 Brussels | €41.1m | €16.2m | €36.3m | 67.7 | 2025 |
| 28 | Vulcain Engineering 1050 Ixelles | €6.14m | €16.1m | €2.54m | 110.3 | 2025 |
| 29 | Jaspers-Eyers Architects Architectenbureau M.& J-M. Jaspers - J. Eyers & Partners 1000 Brussels | €9.24m | €16.0m | 998,784 € | — | 2025 |
| 30 | SGS Statutory Services Belgium 1070 Anderlecht | €3.84m | €15.3m | 782,042 € | 153.5 | 2025 |
| 31 | Archipelago Architects 1150 Woluwe-Saint-Pierre | €10.7m | €14.5m | €7.77m | 31.6 | 2025 |
| 32 | Archipelago Bruxelles 1150 Woluwe-Saint-Pierre | €12.0m | €13.1m | €5.82m | — | 2025 |
| 33 | 3E 1000 Brussels | €15.8m | €13.0m | €2.09m | 78.3 | 2025 |
| 34 | Evolta Engineers 1000 Brussels | €7.71m | €12.1m | €1.91m | 71.4 | 2025 |
| 35 | T.P.F. - Engineering 1190 Forest | €6.14m | €11.7m | €2.56m | 33.5 | 2025 |
| 36 | International Post Corporation 1130 Brussels | €30.8m | €11.2m | €17.2m | 64.9 | 2025 |
| 37 | Comité Européen de Normalisation - European Comittee for Standardization - Europäisches Komitee für Normung 1040 Brussels | €18.8m | €11.0m | €4.08m | 69.5 | 2025 |
| 38 | VP Media Solutions 1030 Schaerbeek | €4.30m | €10.8m | 538,119 € | 10.5 | 2025 |
| 39 | Bstor 1160 Auderghem | €58.5m | €9.55m | €22.4m | 9.9 | 2025 |
| 40 | EUROPEAN FUEL MANUFACTURERS aSSOCIATION 1040 Etterbeek | €35.1m | €9.42m | €22.7m | 50.2 | 2025 |
| 41 | RELY 1210 Saint-Josse-ten-Noode | €154.9m | €8.89m | €82.7m | 18.3 | 2025 |
| 42 | Auto - Contrôle Technique - Automobiel - Controle en Techniek 1140 Evere | €9.38m | €8.83m | €6.87m | 95.9 | 2025 |
| 43 | Procertus 1140 Evere | €8.31m | €8.62m | €6.64m | 27.3 | 2025 |
| 44 | Cobra Belgium 1050 Ixelles | €41.3m | €8.28m | −€12.3m | 51.3 | 2025 |
| 45 | La Sécurité Automobile 1190 Forest | €8.06m | €7.37m | €6.10m | 73.9 | 2025 |
| 46 | Certisys 1000 Brussels | €2.95m | €6.30m | €1.48m | 51.9 | 2025 |
| 47 | Ikos Belgium 1210 Saint-Josse-ten-Noode | €4.20m | €4.79m | €2.94m | 32.2 | 2025 |
| 48 | Modulo Architects 1200 Woluwe-Saint-Lambert | €2.94m | €4.55m | 923,924 € | — | 2025 |
| 49 | Studybel 1140 Evere | €1.94m | €4.40m | 131,165 € | 27.7 | 2025 |
| 50 | Grondbank 1000 Brussels | €4.21m | €4.19m | €1.57m | 22.5 | 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. These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
Architectural and engineering activities; technical testing and analysis across Belgium → All sectors · Brussels →
Other sectors · Brussels
- 10 Manufacture of food products56
- 18 Printing and reproduction of recorded media25
- 20 Manufacture of chemicals and chemical products27
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations19
- 25 Manufacture of fabricated metal products, except machinery and equipment38
- 26 Manufacture of computer, electronic and optical products13
- 27 Manufacture of electrical equipment16
- 28 Manufacture of machinery and equipment n.e.c.11
- 32 Other manufacturing18
- 33 Repair, maintenance and installation of machinery and equipment21
- 35 Electricity, gas, steam and air conditioning supply49
- 38 Waste collection, recovery and disposal activities20
- 41 Construction of residential and non-residential buildings243
- 42 Civil engineering35
- 43 Specialised construction activities598
- 46 Wholesale trade732
- 47 Retail trade1,130
- 49 Land transport and transport via pipelines455
- 52 Warehousing, storage and support activities for transportation58
- 53 Postal and courier activities33
- 55 Accommodation69
- 56 Food and beverage service activities526
- 58 Publishing activities52
- 59 Motion picture, video and television programme production, sound recording and music publishing activities93
- 60 Programming, broadcasting, news agency and other content distribution activities12
- 61 Telecommunication33
- 62 Computer programming, consultancy and related activities338
- 63 Computing infrastructure, data processing, hosting and other information service activities43
- 64 Financial service activities, except insurance and pension funding274
- 66 Activities auxiliary to financial services and insurance activities97
- 68 Real estate activities722
- 69 Legal and accounting activities184
- 70 Activities of head offices and management consultancy485
- 72 Scientific research and development27
- 73 Activities of advertising, market research and public relations163
- 74 Other professional, scientific and technical activities48
- 77 Rental and leasing activities43
- 78 Employment activities36
- 79 Travel agency, tour operator and other reservation service and related activities30
- 80 Investigation and security activities17
- 81 Services to buildings and landscape activities143
- 82 Office administrative, office support and other business support activities181
- 84 Public administration and defence; compulsory social security27
- 85 Education187
- 86 Human health activities259
- 87 Residential care activities100
- 88 Social work activities without accommodation156
- 90 Arts creation and performing arts activities84
- 92 Gambling and betting activities15
- 93 Sports activities and amusement and recreation activities77
- 94 Activities of membership organisations216
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles65
- 96 Personal service activities183
Municipalities with the most companies in the sector · Brussels
Frequently asked questions
Which company in Architectural and engineering activities; technical testing and analysis in Brussels has the highest revenue?
Tractebel Engineering, with €332.1m of published revenue (financial year 2025).
Why are some companies missing?
Small companies (micro and abridged accounts) do not have to publish their revenue: only the 136 that publish it, out of 1,880 companies in the sector in the area, are ranked.
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.
Analyse companies · Brussels
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Open the full file →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.