Where do these figures come from?

From the Crossroads Bank for Enterprises (KBO/BCE), the public register of Belgian companies, published as open data by the FPS Economy. We read the full monthly extract and count the rows; we add no estimates.

How often are they updated?

The register publishes one full extract per month. The figures on these pages change at that pace, and each one carries the date the register was read.

Yes. Cite the Crossroads Bank for Enterprises as the source of the data, together with the read date shown on the page — that is what lets a reader repeat the count.

Do these pages contain personal data?

No. They hold totals only, and any category that would describe too small a group of sole traders is removed before publication.

Belgian construction in figures

The number of construction companies registered in Belgium, broken down by trade, by region and by year of registration. Every figure is a count taken from the public register, with the date it was read.

No company is named on these pages. They hold totals, and any category too small to stay anonymous is taken out of them.

Active construction companies

201,384

Crossroads Bank for Enterprises3 Sept 2026Confirmed

Companies whose register entry shows a construction activity as their main one, and no cessation.

Companies on the register: 208,558
Of which sole traders: 86,813
In insolvency proceedings: 7,174

By region

Active companies whose registered seat is in each of the three regions.

Companies with legal personality
Sole traders

Flanders132,783 · 39.4% sole traders
Wallonia48,877 · 48% sole traders
Brussels-Capital Region18,336 · 51.8% sole traders

1,388 companies have a postcode outside Belgium or one we could not read: they count in the national total, but in no province.

The largest trades

The six best-represented activity classes, in the register’s own vocabulary.

Companies with legal personality
Sole traders

Construction of residential and non-residential buildings41.0033,476 · 27.8% sole traders
Electrical installation43.2128,634 · 42% sole traders
Joinery installation43.3223,151 · 43.1% sole traders
Other specialised construction activities n.e.c.43.9917,089 · 43.3% sole traders
Plumbing, heat and air-conditioning installation43.2216,639 · 34.9% sole traders
Site preparation43.1214,933 · 56% sole traders

Common questions

Where do these figures come from?: From the Crossroads Bank for Enterprises (KBO/BCE), the public register of Belgian companies, published as open data by the FPS Economy. We read the full monthly extract and count the rows; we add no estimates.
How often are they updated?: The register publishes one full extract per month. The figures on these pages change at that pace, and each one carries the date the register was read.
May I quote them?: Yes. Cite the Crossroads Bank for Enterprises as the source of the data, together with the read date shown on the page — that is what lets a reader repeat the count.
Do these pages contain personal data?: No. They hold totals only, and any category that would describe too small a group of sole traders is removed before publication.

Method and sources

Counted here are the companies whose main activity code falls under NACE divisions 41, 42, 43 — construction — in version 2025 of the classification.

Register read on 3 Sept 2026. The register publishes one full extract per month; these figures change at that pace and no faster.

Any category describing fewer than 10 sole traders is taken out of the breakdown: a count small enough points at one person, and these pages point at nobody. Removed categories are reported under the table they came from.

Province and region are derived from the seat’s postcode: the register publishes a commune and a postcode, not a province. That derivation is ours.

Source: Crossroads Bank for Enterprises (KBO/BCE), FPS Economy — open data — re-use conditions

These figures describe what the public register said on the day we read it. They are counts, not a ranking: no commune, no trade and no company is presented here as better or worse than another.