List of Construction Companies in Belgium

Last updated 5 November 2026

There are 208,600 construction companies in Belgium, one in every 11 Belgian companies. Most of them are small: nearly all have one to four people, and only 548 firms employ 50 people or more. One in eleven construction firms is based in Antwerpen, Bruxelles, Anderlecht, Gent and Charleroi. Below you find the largest construction firms in Belgium, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our Belgian company database or through the KBO API.

208,600 companies indexed · Data counted on 5 November 2026

Companies208,6001 in11 Belgian companiesCities622Largest cityAntwerpen 6,193Sole traders41%Employees1-4 (95%)Revenue< $100K (61%)Email29%Phone45%Website29%

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A live view of all 208,600 construction firms, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Jan De NulJan De Nul

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Jan De Nul	Belgium	Aalst	Tragel 60	Oost Vlaanderen	9308	*****.com	1938	$2,006,794,322	1,940	Corporation	98	BE0406041406
2	Equans	Belgium	Saint-josse-ten-noode	Boulevard Du Roi Albert Ii 19	Bruxelles Capitale	1210	*****.be	1983	$1,461,176,051	5,629	Corporation	4135	BE0425702910
3	N.V. Besix S.A.	Belgium	Woluwe-saint-lambert	Avenue Des Communautes 100	Bruxelles Capitale	1200	*****.com	1973	$1,337,049,354	835	Corporation	150	BE0413630071
4	Deme Offshore BE	Belgium	Zwijndrecht	Scheldedijk 30	Antwerpen	2070	*****.be	2019	$1,122,695,772	681	Corporation	348	BE0729849576
5	Dredging International	Belgium	Zwijndrecht	Scheldedijk 30	Antwerpen	2070	*****.com	1988	$847,526,819	681	Corporation	348	BE0435305514
6	Deme Dredging	Belgium	Zwijndrecht	Scheldedijk 30	Antwerpen	2070	*****.be	2022	$704,772,551	1,388	Corporation	348	BE0793485239
7	Stadsbader	Belgium	Harelbeke	Kanaalstraat 1	West Vlaanderen	8530	*****.com	2010	$613,043,723	774	Corporation	39	BE0407975466
8	Denys	Belgium	Gent	Industrieweg 124	Oost Vlaanderen	9032	*****.com	1976	$586,834,933	960	Corporation	17	BE0416585801
9	Stadsbader Contractors	Belgium	Bruxelles	Avenue Antoon van Oss 1, Internal Postal Box 2	Bruxelles Capitale	1120	*****.be	2022	$456,272,738	681	Corporation	39	BE0452702265
10	Spie Belgium	Belgium	Anderlecht	Rue Des Deux Gares 150	Bruxelles Capitale	1070	*****.be	1988	$435,338,574	1,387	Corporation	812	BE0434499028
11	Cordeel Belgium	Belgium	Hoeselt	Industrielaan 18	Limburg	3730	*****.be	1985	$376,652,082	341	Corporation	79	BE0427302321
12	Verbraeken Infra	Belgium	Temse	Haverheidelaan 10	Oost Vlaanderen	9140	*****.eu	1985	$371,492,500	330	Corporation	209	BE0427173350
13	Willy Naessens Industriebouw	Belgium	Wortegem	Kouter 3	Oost Vlaanderen	9790	*****.be	1978	$352,425,661	385	Corporation	84	BE0418972989
14	Cit Blaton	Belgium	Schaerbeek	Avenue Jean Jaurès 50	Bruxelles Capitale	1030	*****.be	1988	$351,270,727	353	Corporation	7	BE0435112207
15	Willemen Infra	Belgium	Gent	Booiebos 4	Oost Vlaanderen	9031	*****.be	2015	$329,345,307	861	Corporation	65	BE0405092190
16	Alheembouw	Belgium	Staden	Roeselarestraat 205	West Vlaanderen	8840	*****.be	2022	$324,417,840	195	Corporation	16	BE0428936572
17	Jacops	Belgium	Deerlijk	Nijverheidslaan 31	West Vlaanderen	8540	*****.be	2018	$314,214,996	684	Corporation	33	BE0415826627
18	Renotec	Belgium	Geel	Acaciastraat 14c	Antwerpen	2440	*****.be	1988	$279,384,514	816	Corporation	11	BE0436207911
19	Entreprises Generales Louis Duchêne	Belgium	Modave	Route de Stree 44	Liège	4577	*****.be	1956	$278,231,418	465	Corporation	2349	BE0405619851
20	Willemen Bouw	Belgium	Mechelen	Boerenkrijgstraat 133	Antwerpen	2800	*****.be	2003	$268,350,574	385	Corporation	65	BE0859869762
21	Thomas & Piron Home	Belgium	Paliseul	Rue de la Besace 14	Luxembourg	6852	*****.eu	1976	$244,742,375	916	Corporation	102	BE0415776939
22	Bpc Group	Belgium	Oudergem	Av. Edmond van Nieuwenhuyse 30	Brussel Hoofdstad	1160	*****.be	1983	$242,536,977	283	Corporation	348	BE0425342624
23	Aertssen Infra	Belgium	Stabroek	Laageind 91	Antwerpen	2940	*****.com	1964	$230,726,387	344	Corporation	40	BE0403813275
24	Imtech Belgium Ou En Francais Imtech Belgique Ou En Neerlandais Imtech Belgie	Belgium	Anderlecht	Boulevard Industriel 28	Bruxelles Capitale	1070	*****.be	1997	$222,885,234	552	Corporation	10	BE0402969474
25	Advices For Technical Systems	Belgium	Merelbeke	Karel de Roosestraat 15	Oost Vlaanderen	9820	*****.be	1984	$219,358,535	541	Corporation	36005	BE0425815647

Showing 25 of 208,600 companies

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Firm sizes in Belgium

Of the 195,372 Belgian construction firms with a known headcount, 186,035 (95%) have one to four people, 5,105 have five to nine, 3,684 have ten to 49 and 548 have 50 or more. Most firms turn over under $100,000 a year (109,709, 61%).

EU size bands · the grey line shows all Belgian companies

Micro under 10191,140 98%
Small 10 to 493,684 2%
Medium 50 to 249527 0.3%
Large 250+21 <0.1%

Grey line: the share among all Belgian companies (98% have under ten staff).

1,131

firms turn over more than $5 million a year; 855 more than $10 million.

11,007

firms were entered in 2026.

Largest construction firms in Belgium

The biggest firms by staff and by revenue, the largest in Antwerpen, the biggest newcomers of 2026 and the oldest firms. Click a name for the record.

Jan De Nul is the largest construction firm in Belgium by headcount. 548 firms employ 50 people or more; 238 employ 100 or more.

1Aalst1,940 staff
2Zwijndrecht1,388 staff
3Anderlecht1,387 staff
4Beveren-Waas1,122 staff
5Gent960 staff
6Paliseul916 staff
7Gent861 staff
8Woluwe-Saint-Lambert835 staff
9Geel816 staff
10Harelbeke774 staff

By employee size · 195,372 firms with a known headcount

Employees	Firms	%
1-4	186,035	95%
5-9	5,105	3%
10-19	2,431	1%
20-49	1,253	0.6%
50-99	310	0.2%
100-199	149	<0.1%
200-499	68	<0.1%
500-999	16	<0.1%
1,000+	5	<0.1%

95% have 1 to 4 people; 1,253 have 20 to 49; 548 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	109,709	61%
$100K-$500K	47,528	27%
$500K-$1M	17,454	10%
$1M-$5M	2,603	1%
$5M-$10M	276	0.2%
$10M-$50M	659	0.4%
$50M-$100M	102	<0.1%
$100M-$500M	86	<0.1%
$500M+	8	<0.1%

61% under $100,000; 2,603 between $1M and $5M; 1,131 above $5M.

Where in Belgium?

Antwerpen has the most construction companies in Belgium (6,193), ahead of Bruxelles (3,742), Anderlecht (3,494), Gent (3,393) and Charleroi (2,351). Together the five hold one in eleven of them. Relative to their size, Sint-Pieters-Leeuw, Asse and Wemmel have the most: 2.2 to 2.8 times the national share.

Cities by number of firms

622 Belgian cities have at least one construction firm; 605 have ten or more; 5 have exactly one. Click a city to set the lens.

Only here

Where they cluster

Construction firms per 100 companies, in cities with at least 100 of them. The national share is 8.74. Sint-Pieters-Leeuw has 2.8 times the national share.

2.8×
2.2×
2.2×
2.1×
1.9×
1.9×
1.8×
1.8×
1.8×
1.7×
1.7×
1.7×
1.7×
1.7×

Dashed line: the national share. A filled dot is twice the national share or more.

By province 21 provinces

Province	Firms	%
Antwerpen	28,933	14%
Oost Vlaanderen	28,603	14%
Vlaams Brabant	24,998	12%
West Vlaanderen	24,847	12%
Bruxelles Capitale	21,965	11%
Limburg	16,755	8%
Hainaut	16,125	8%
Liège	15,057	7%
Namur	8,002	4%
Brabant Wallon	6,923	3%

Show all 21

Construction firms in Antwerpen

Antwerpen has 6,193 construction companies and construction firms, 5.7% of all 108,393 Antwerpen companies and 35% below the national share. Nearly all Antwerpen firms have fewer than five people; 23 have 50 or more. 549 new firms were entered in 2026, 311 date from before 1990.

Size

1-4 staff: 5,555 · 95%
5-9: 164 · 3%
10-19: 45 · 0.8%
20-49: 37 · 0.6%
50+: 23 · 0.4%

Legal form

Sole traders: 2,813 · 45%
Partnerships: 320 · 5%
BV/SRL and NV/SA: 2,245 · 36%
Other or none: 815 · 13%

Of the Belgian total: 3.0%
Of all Antwerpen companies: 5.7%
Against the national share: 0.7×

New

Entered 2026 so far: 549
Entered 2025: 758
Of Belgium's 2026 entries: 5.0%

Old

Before 1990: 311 · 5%
1990 or later: 5,882 · 95%
Of Belgium's pre-1990 firms: 2.6%

Reachable

Email: 1,313 · 21%
Phone: 1,869 · 30%
Website: 1,396 · 23%

Revenue (USD)

Under $100K: 3,549 · 66%
$100K-$500K: 1,251 · 23%
$500K-$1M: 490 · 9%
$1M and more: 111 · 2%

Largest

1681
2259
3205
4Foreign company200
5179

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How many construction companies are there in Belgium?

Construction companies and construction firms in Belgium

208,600

5 November 2026

There are 208,600 construction companies and construction firms in Belgium in our data (5 November 2026). That is one in every 11 Belgian companies. About 50 new firms are entered in the register every working day this year (11,007 so far in 2026).

Structure

Single-site firms: 147,977 71%
Head offices: 30,622
Branch offices: 30,001

Classification

NACE-BEL 2008 codes 41, 42 and 43, NACE Rev. 2 41. Our platform filter is NACE-BEL 2008 41, 42, 43.

78,120 of the 208,600 are BV/SRL and NV/SA (37%); 86,485 are sole traders. They come from Kruispuntbank van Ondernemingen (KBO/BCE) and our Belgian register data, through the KBO API.

Sole traders or BV/SRL: how they are organised

Two in five Belgian construction firms work as sole traders, against 32% of all Belgian companies. Two in five are BV/SRL and NV/SA.

Sole traders (eenmanszaak / entreprise individuelle)86,48541%
Partnerships (VOF/SNC and CommV/SComm)10,0185%
BV/SRL and NV/SA78,12037%
No form on record or other33,97716%

Single-site: 71%
Head offices: 30,622
Branches: 30,001

All Belgian companies: 32% sole traders, 9% partnerships, 28% BV/SRL and NV/SA.

The oldest firms in Belgium

Our data holds 2 Belgian construction firms from before 1900, 129 from before 1950 and 11,974 from before 1990.

1880
1. Oudergem
1899
1. Etterbeek
1900
1. Brussel
1900
1. Putte
1900
1. Antwerpen
1904
1. Tournai

Older than you

Live tool

Move the slider to a year. Two live counts, scoped to this industry.

1990

11,974

Belgian construction firms date from before 1990

1,381

were entered in 1990

How reachable are they?

Construction firms are easier to reach than the average Belgian company: 45% list a phone number and 29% a website.

Email61,344 29%
Phone93,051 45%
Website60,871 29%

Grey line: all Belgian companies (email 23%, phone 43%, website 27%).

The full list with these fields is in our Belgian company database.

Newcomers in Belgium in 2026

11,007 construction firms were entered in the Belgian register so far in 2026, about 50 a working day, after 16,320 in 2025. Belgium as a whole saw 108,068 new companies in 2026, so this industry takes 10.2% of the inflow.

12,4942022
13,8132023
14,9282024
16,3202025
11,0072026 so far

2,998 of this year's 11,007 are BV/SRL and NV/SA.

The biggest newcomers of 2026

The year is the register entry; an established firm that changes legal form appears as new.

1Berlare30 staff
2Genappe27 staff
3Lokeren24 staff
4Erquelinnes13 staff
5Namur13 staff

How they compare

Next to related industries

There are 454 construction firms for every one of the shipbuilders in Belgium.

Industry	Firms	Website	1-4 staff
Construction Companies	208,600	29%	89%
HVAC Companies	18,799	38%	89%
Cleaning Companies	18,646	25%	82%
Painting Companies	8,241	34%	94%
Interior Designers	2,589	37%	96%
Shipbuilders	459	34%	79%

In other countries

Only the UK, Italy and Spain have more construction firms than Belgium.

Country	Firms	Per 1,000 cos.
The UK	668,898	75.7
Italy	610,263	86.9
Spain	240,914	44.3
Belgium	208,600	87.4
The Czech Republic	95,332	27.1

More countries →

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Frequently asked questions

How many construction companies are there in Belgium?

There are 208,600 construction companies and construction firms in Belgium in our data, counted on 5 November 2026. That is one in every 11 Belgian companies.

Which is the largest construction firm in Belgium?

Jan De Nul in Aalst, with 1,940 staff.

Which Belgian city has the most construction companies?

Antwerpen, with 6,193, ahead of Bruxelles (3,742), Anderlecht (3,494), Gent (3,393) and Charleroi (2,351). Relative to its size, Sint-Pieters-Leeuw has the most: 2.8 times the national share.

How many construction firms are there in Antwerpen?

6,193, which is 5.7% of all 108,393 Antwerpen companies and 35% below the national share.

How big is a typical construction firm?

Small. 95% of the 195,372 firms with a known headcount have one to four people; 548 have 50 or more. Most turn over under $100,000 a year.

Are Belgian construction companies sole traders or companies?

Two in five (86,485) are sole traders, 5% are partnerships and 37% (78,120) are BV/SRL and NV/SA.

How many construction firms started in 2026?

11,007 were entered in the Belgian register so far in 2026, after 16,320 in 2025. 2,998 of them are BV/SRL and NV/SA.

What is the oldest construction firm in Belgium?

Compagnie d'Entreprises Cfe in Oudergem, 1880, followed by Verreries Du Midi De La Pologne SA En Liquidation in Etterbeek (1899) and Halon Jean in Brussel (1900). 2 firms date from before 1900.

Which industry code covers construction companies?

Belgian construction companies are classified under NACE-BEL 2008 codes 41, 42 and 43, NACE Rev. 2 code 41. Our platform filters them on NACE-BEL 2008 41, 42 and 43.

Can I download the full list?

Yes. All 208,600 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, in other countries

The lists closest to this one. Every industry and city in Belgium is on the Belgium page.

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