43 - SPECIALISED CONSTRUCTION ACTIVITIES Companies in Belgium
Approximately 332,122 real businesses classified under 43 - Specialised construction activities in Belgium, with officer, shareholder and beneficial ownership records sourced directly from official government registries.
Approximately 332,122 real businesses classified under 43 - Specialised construction activities operate in Belgium. Covers companies officially classified under NACEBEL 2008 code 43 (Specialised construction activities), part of Belgium's NACEBEL 2008 classification of economic activities. This division is one of the sub-sectors making up the broader Construction sector. Ownership, beneficial-ownership disclosure and company-registration rules for businesses under this specific activity code follow the same general framework that applies across Construction in Belgium.
10 companies under this specific code are indexed on Zavia so far, part of a continually growing dataset.
Beneficial-ownership and registration rules for Construction companies in Belgium follow the same national framework as every other sector there.
Full Belgium beneficial ownership overviewTop 43 - Specialised construction activities Companies in Belgium
Live from the register. Every row opens the full record — officers, shareholders and resolved group structure.
Data Coverage
Record counts for SIC Code F in Belgium, as of the last reconciliation.
Section F is 13% of the Belgium register by entity count and its 2nd largest sector — see all sectors.
Analysis
What this data actually tells you
Construction in Belgium includes a voluntary but consequential recognition system: erkenning als aannemer (contractor recognition), valid for five years, isn’t legally required to operate but is required to bid on government construction contracts. Recognition verifies three things — technical capacity based on previously executed works, financial capacity based on turnover figures, and professional integrity based on good-conduct certification — and contractors are classified into eight classes, from 1 (lowest) to 8 (highest), tied to their verified financial and technical strength.
From 1 January 2026, Flanders introduced a genuine duty of diligence for companies in high-risk sectors including construction, cleaning, meat processing and parcel delivery: they must actively verify that subcontractors throughout their supply chain aren’t employing illegal non-EEA workers, going beyond simply collecting written declarations. For verification, a Belgian construction counterparty’s real standing depends on checking both its contractor-recognition class (for public-works eligibility) and, from 2026 in Flanders, its actual diligence record on subcontractor employment status — since failing to verify can make the principal company jointly liable for a subcontractor’s illegal employment.
Belgium Construction, by the register
Charts render from live counts. Modules are suppressed where coverage is too thin to be meaningful.
Entities by sub-sector
SIC division level, live from official registries.
Active vs. inactive
Section F entities currently on the register as active, vs. struck off or dormant.
Company size, by disclosed headcount
By number of employees on file, Section F, Belgium. 174 entities with no disclosed headcount are not counted in any band.
Who uses Belgium construction ownership data
The three checks this sector's data is most often run for.
Erkenning als aannemer (contractor recognition) check
Belgian contractor recognition (erkenning als aannemer), valid for 5 years, is optional but required to bid on government contracts — it verifies technical capacity, financial capacity (via turnover) and professional integrity, and contractors are classified into 8 classes by financial and technical strength.
Flemish 2026 illegal-employment due-diligence duty
From 1 January 2026, companies in high-risk Flemish sectors including construction must actively verify that subcontractors throughout their supply chain don’t employ illegal non-EEA workers — a genuine due-diligence duty, not just collecting written declarations, with joint liability for the principal company if a subcontractor is found non-compliant.
Contractor-class verification for large projects
A contractor’s class (1 to 8, tied to financial and technical capacity) determines the maximum project value it’s authorised to bid on for public works — confirming a contractor’s actual class is a real, checkable signal of its verified scale, distinct from its company filing.
Sub-sectors within Construction
SIC divisions inside this section, each with its own Belgium company directory.
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring for Belgium companies — via API or a bulk data feed.
Frequently Asked Questions
How many companies are classified under 43 - Specialised construction activities in Belgium?
Approximately 332,122 businesses are classified under 43 - Specialised construction activities in Belgium.
What does NACEBEL 2008 code 43 cover?
43 - Specialised construction activities is the official name for this activity under Belgium's NACEBEL 2008 classification of economic activities. It is a sub-category within the broader Construction sector.
How is this different from the broader Construction category?
Construction is the top-level sector; NACEBEL 2008 code 43 identifies one specific activity within it, letting you narrow a search to exactly this business type rather than the whole sector.
What ownership information is available for these companies?
The same beneficial-ownership, shareholder and officer disclosure framework applies as for any other company in Belgium, regardless of its specific activity classification. See the individual company profile for the full ownership picture, or the Construction sector overview for the general national framework.
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