Ranking · Wallonia · NACE 43

Specialised construction activities: the largest employers in Wallonia

As of 14 Nov 2026, 4,772 companies in Specialised construction activities (NACE 43) in Wallonia report employees in recent accounts (financial years 2023 to 2026). The 10 largest employers account for 2,539.5 FTE, out of 29,674.7 for all of them; median headcount is 2.6 FTE. Collignon ENG. leads with 355.9 FTE (financial year 2025).

Top 50 · Specialised construction activities · Wallonia

Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).

#Company Total assetsRevenue EquityFTEYear
1 Collignon ENG. 6997 Érezée €51.8m €87.9m €8.28m 355.9 2025
2 VMA Sud 6040 Charleroi €54.9m €90.3m €11.1m 330.4 2025
3 Franki Foundations Belgium 1480 Tubize €111.4m €78.2m €41.1m 306.0 2025
4 Menatam 5020 Namur €80.9m €132.1m €27.0m 299.9 2025
5 Jacops Sud 6041 Charleroi €26.7m €58.7m €7.70m 268.9 2025
6 Eloy Travaux 4140 Sprimont €51.5m €84.5m €11.9m 237.8 2024
7 Neupre Net Services 4120 Neupré €2.82m — €2.08m 188.8 2025
8 Coselog 7522 Tournai €137.1m €30.2m €30.0m 186.0 2025
9 Monnaie 7110 La Louvière €18.2m €20.5m €5.52m 185.7 2025
10 Les Erables 7522 Tournai €15.8m €4.63m €12.0m 180.1 2025
11 Klinkenberg 4041 Herstal €13.3m €27.4m €7.92m 174.8 2025
12 Close Comfort 4920 Aywaille €37.7m €55.1m €8.37m 154.8 2025
13 Haute Meuse Net Services 2 4900 Spa €1.45m — 615,144 € 146.0 2025
14 Thersa 7700 Mouscron €15.9m €40.0m €6.34m 132.0 2025
15 VD Cabling 4040 Herstal €10.1m €10.6m €3.47m 124.9 2025
16 Henkens Frères 4841 Welkenraedt €13.0m €21.1m €1.70m 118.5 2025
17 Entreprises de Montages en General Jean Boutique 7331 Saint-Ghislain €19.7m €19.5m €3.87m 117.7 2025
18 Enersol 4651 Herve €19.4m €23.5m €7.03m 116.4 2025
19 Sipres 7011 Mons €3.16m €2.54m €1.56m 114.4 2025
20 Senec 1420 Braine-l'Alleud €6.11m €15.5m −950,968 € 114.2 2024
21 Etablissements Vanlofveld 4432 Ans €8.37m €16.8m €1.87m 113.4 2025
22 Genetec 5100 Namur €32.7m €27.9m €11.3m 107.0 2025
23 Dufour Transports et Manutentions 7522 Tournai €77.1m €42.8m €25.1m 106.4 2025
24 Etablissements Jordan 6240 Farciennes €12.4m €21.7m €2.79m 102.2 2025
25 Delta Thermic 4040 Herstal €13.4m €23.8m €2.88m 94.7 2025
26 Goessens 4280 Hannut €8.50m €14.0m 150,897 € 93.7 2025
27 Pierret Project 6890 Libin €29.4m €53.5m €13.2m 89.8 2025
28 AD Megatec 7780 Comines-Warneton €30.8m €37.9m €23.1m 85.5 2024
29 Fugro Belgium 1348 Ottignies-Louvain-la-Neuve €6.86m €15.8m €2.73m 80.1 2024
30 Agence Intercommunale de Developpement Economique des Arrondissements de Tournai, ATH et des Communes Avoisinantes 7500 Tournai €235.8m €12.5m €149.6m 78.6 2025
31 Au Coin du FEU 7110 La Louvière €4.52m — €2.45m 75.7 2025
32 Lucas David 4360 Oreye €13.4m €24.0m €3.82m 73.4 2025
33 Seppi 4630 Soumagne €4.59m €11.6m €1.40m 67.1 2025
34 Megamax 7181 Seneffe €25.2m €10.9m €9.57m 62.9 2025
35 Toitures Jacobs 4790 Burg-Reuland €14.1m €23.7m €5.64m 62.8 2025
36 Entrance Services 4141 Sprimont €4.53m — €1.18m 61.5 2025
37 Vincent Piront 4890 Thimister-Clermont €11.3m €21.3m €3.23m 61.3 2025
38 International Fire Control 7503 Tournai €6.14m — €1.10m 61.3 2025
39 Tectum DSB 1440 Braine-le-Château €3.91m €8.66m €1.32m 60.4 2025
40 Energys 4340 Awans €6.22m €11.0m 999,644 € 60.0 2025
41 Alyxel 7080 Frameries €2.23m — 828,548 € 54.9 2025
42 Energie et Confort 4000 Liège €6.54m €10.1m €4.60m 54.6 2025
43 Entreprises Lepage frères 6040 Charleroi €11.5m €25.8m €1.82m 54.3 2024
44 La Temperature Ideale 6040 Charleroi €8.47m €18.3m €1.07m 54.3 2025
45 Air Ambiance 4651 Herve €5.89m €12.0m €1.08m 53.7 2025
46 Etablissements Henneaux frères, Entreprises Générales d'Electricité 6870 Saint-Hubert €11.2m €12.3m €8.55m 53.2 2025
47 D - FI 4140 Sprimont €13.1m €15.3m €2.97m 53.0 2025
48 A.N.G. Menuiserie 6140 Fontaine-l'Évêque 463,698 € — 212,951 € 53.0 2025
49 Onefield ICT 1400 Nivelles €7.26m €12.6m 54,156 € 52.6 2025
50 Sprimo Installation Services 4140 Sprimont €4.22m €9.07m −€2.06m 50.9 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. Headcount reported by the company for all its sites: the jobs may be located elsewhere.

“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.

Specialised construction activities across Belgium → All sectors · Wallonia →

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Frequently asked questions

Which is the largest employer in Specialised construction activities in Wallonia?

Among companies, Collignon ENG., with 355.9 full-time equivalents reported (financial year 2025).

Are all the jobs located in the area?

Not necessarily: headcount is reported by the company for all its sites, and the company is ranked by the address of its registered office. 4,772 out of 12,495 companies in the sector report employees there.

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 14 Nov 2026.