Active · per the CBE, 16 September 2026

VAALTENBERG

BE0882009122

Rechtspersoon Private limited company 1 establishment

VAALTENBERG is a construction company in Wezembeek-Oppem. Private Limited, started on 22 June 2006, 1 establishment.

Bundergaarde 6, 1970 Wezembeek-Oppem

Behind the company: Katarzyna SIDORKIEWICZ, Hubert KOTONSKI.

Active for

20 year, 2 months

Financials

Financial year 2025

VAALTENBERG from Wezembeek-Oppem, company number BE0882009122, closed financial year 2025 with a result of € 54,830 after tax. For that financial year VAALTENBERG recorded a gross margin of € 105,853 and equity of € 1.3 million. Compared with financial year 2024, the result moved from € 90,377 to € 54,830. The company is profitable. The company holds a healthy buffer. A strong own buffer against the debts. The most recent annual accounts were filed with the National Bank of Belgium on May 29, 2026.

What it is worth Healthy

€ 1.3 million

▼ 6% vs 2024

Assets minus debts, by the books. What is left if everything were sold and paid today.

Profit Healthy

€ 54,830

▼ 39% vs 2024

Profit after tax over the fiscal year.

Cash in the bank

€ 820,956

▼ 3% vs 2024

Cash and bank balances on the last day of the fiscal year.

Where the profit goes Pays out

€ 136,000 paid out

More than the year’s profit went to the shareholders; reserves fell.

People and assets in 2025

Vehicles and equipment

€ 196

▼ 43% vs 2024

Book value of vehicles, furniture and equipment.

Debts at end 2025

Bank debt

€ 18,749

▲ 5% vs 2024

Loans from banks and other lenders, long and short.

Owed to suppliers

€ 262,417

▼ 19% vs 2024

Supplier invoices still open on the last day of the fiscal year.

Taxes

€ 43

▼ 99% vs 2024

Corporate tax and VAT still to pay. No wage debt: nothing outstanding to staff or social security.

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Key figures per fiscal year Download key figures (CSV)
2022202320242025Change 2024 → 2025
Gross margin € 311,368 € 239,976 € 147,188 € 105,853 ▼ 28%
Profit after taxes € 195,945 € 161,778 € 90,377 € 54,830 ▼ 39%
Equity € 1,135,249 € 1,297,028 € 1,387,404 € 1,306,235 ▼ 6%
Total debts € 393,002 € 412,669 € 350,451 € 345,663 ▼ 1%
Cash € 457,525 € 443,205 € 844,084 € 820,956 ▼ 3%
Retained profit € 1,129,049 € 1,290,828 € 1,381,204 € 1,300,035 ▼ 6%
Dividend € 0 € 0 € 0 € 136,000
Bank debt € 20,094 € 17,934 € 17,908 € 18,749 ▲ 5%
Balance sheet total € 1,528,251 € 1,709,697 € 1,737,855 € 1,651,898 ▼ 5%

Key figures of VAALTENBERG, fiscal years 2022 to 2025, from the annual accounts filed with the National Bank of Belgium.Next annual account (fiscal year 2026) expected before 30 April 2027.

What happened to VAALTENBERG?

What happened at VAALTENBERG in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:

  • New annual accounts for financial year 2025: profit of € 54,830 (▼ 39% vs 2024). filed late Source: NBB ↗
  • Katarzyna SIDORKIEWICZ became a director. NBB
  • Start of the company according to the CBE. KBO
  • New establishment in Wezembeek-Oppem. KBO
  • Hubert KOTONSKI became a director. NBB

In short

From € 195,945 profit in 2022 to € 54,830 profit in 2025.

Paid € 225,124 in corporate taxes since 2022.

Best year ever: 2022, with € 195,945 profit.

Paid out € 136,000 in dividends to the owners in total.

Management

Katarzyna SIDORKIEWICZ
Hubert KOTONSKI
VAALTENBERG

Behind VAALTENBERG are Katarzyna SIDORKIEWICZ and Hubert KOTONSKI. It owns 23.1% of Aduro Build itself.

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Directors

According to the 2025 annual accounts

Katarzyna SIDORKIEWICZ

Manager

since 2011

Hubert KOTONSKI

Manager

Also active at: INSIDIUM, CONSTRUKTON, ADURO BUILD

since 2006

Establishments

Establishment units

Physical locations of this company

Registered office

Bundergaarde 6

1970 Wezembeek-Oppem

Who else lives here?

A building full of entrepreneurs or one very busy letterbox? Another 1 companies are registered at this address.

All companies at this address →

What is an establishment unit? An establishment unit is a geographically identifiable place where activities of the enterprise are carried out.

Details

Company number
0882.009.122
VAT number
BE 0882.009.122
Registered office
Bundergaarde 6, 1970 Wezembeek-Oppem
Names & denominations
VAALTENBERG
Enterprise type
Rechtspersoon
Legal form
Private limited company
Legal situation
Normale toestand
Start date
22 June 2006
Peppol
Active · Active since 18 Dec 2025
Activities · NACE

Algemene bouw van residentiële gebouwen

Bouwen van individuele huizen

Glaszetten

Dakwerkzaamheden

Plaatsen van vloer- en wandtegels

Dakbedekking en bouw van dakconstructies

Optrekken van andere residentiële gebouwen en van kantoorgebouwen

Frequently asked questions

What does VAALTENBERG do?
VAALTENBERG is a construction company in Wezembeek-Oppem. Private Limited, started on 22 June 2006, 1 establishment.
What is the address of VAALTENBERG?
The registered office of VAALTENBERG is located at Bundergaarde 6, 1970 Wezembeek-Oppem.
Is VAALTENBERG still active?
Yes. According to the CBE (16 September 2026) VAALTENBERG is active, legal situation “Normale toestand”, started on 22 June 2006.
Is VAALTENBERG registered on Peppol?
Yes, VAALTENBERG is registered on the Peppol network with ID 0208:0882009122.
What is the enterprise number of VAALTENBERG?
The enterprise number of VAALTENBERG is BE0882009122.
When was VAALTENBERG founded?
VAALTENBERG was founded on 22 June 2006.