What does STUDIEBUREAU DIEDERIK AERTS do?

STUDIEBUREAU DIEDERIK AERTS is filed with the CBE under the catch-all “Overige activiteiten van vrije beroepen en andere wetenschappelijke en technische activiteiten”. Also registered: testing and inspection body, engineering firm, healthcare practice. Private Limited, started on 2 February 2018, 1 establishment.

What is the address of STUDIEBUREAU DIEDERIK AERTS?

The registered office of STUDIEBUREAU DIEDERIK AERTS is located at L. Lambrechtsstraat 19, 3730 Bilzen-Hoeselt.

Is STUDIEBUREAU DIEDERIK AERTS still active?

Yes. According to the CBE (2 November 2026) STUDIEBUREAU DIEDERIK AERTS is active, legal situation “Normale toestand”, started on 2 February 2018.

Is STUDIEBUREAU DIEDERIK AERTS registered on Peppol?

Yes, STUDIEBUREAU DIEDERIK AERTS is registered on the Peppol network with ID 0208:0689749974.

What is the enterprise number of STUDIEBUREAU DIEDERIK AERTS?

The enterprise number of STUDIEBUREAU DIEDERIK AERTS is BE0689749974.

When was STUDIEBUREAU DIEDERIK AERTS founded?

STUDIEBUREAU DIEDERIK AERTS was founded on 2 February 2018.

Who are the directors of STUDIEBUREAU DIEDERIK AERTS?

According to the 2025 annual accounts, the directors of STUDIEBUREAU DIEDERIK AERTS are: Diederik Aerts, Inge Castermans.

Is STUDIEBUREAU DIEDERIK AERTS a reliable company?

Databakkes does not pass judgement; this is what the sources say: Active according to the CBE since 2 February 2018; 5 annual accounts filed, latest fiscal year 2025; 2 directors known from the annual account.

How much profit did STUDIEBUREAU DIEDERIK AERTS make in 2025?

STUDIEBUREAU DIEDERIK AERTS posted a profit after taxes of € 62,349 in financial year 2025.

What is the revenue of STUDIEBUREAU DIEDERIK AERTS?

As a small company, STUDIEBUREAU DIEDERIK AERTS is not required to publish revenue in its annual accounts. In financial year 2025, its added value was € 129,788.

Does STUDIEBUREAU DIEDERIK AERTS have a website?

Yes, STUDIEBUREAU DIEDERIK AERTS has a website at diederikaerts.be.

STUDIEBUREAU DIEDERIK AERTS (Private Limited)

Dossier STUDIEBUREAU DIEDERIK AERTS, printed on 2 November 2026 from databakkes.be/en/0689749974/studiebureau-diederik-aerts. Sources: CBE, National Bank of Belgium, Belgian Official Gazette.

Financials

Financial year 2025

STUDIEBUREAU DIEDERIK AERTS from Bilzen-Hoeselt, company number BE0689749974, closed financial year 2025 with a result of € 62,349 after tax. For that financial year STUDIEBUREAU DIEDERIK AERTS recorded a gross margin of € 129,788 and equity of € 327,767. Compared with financial year 2024, the result moved from € 73,585 to € 62,349. The company is profitable. The buffer is growing. A strong own buffer against the debts. The most recent annual accounts were filed with the National Bank of Belgium on June 19, 2026.

What it is worth Growing

€ 327,767

▲ 23% vs 2024

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

Profit Healthy

€ 62,349

▼ 15% vs 2024

Profit after tax over the fiscal year.

Cash in the bank

€ 127,191

▼ 8% vs 2024

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

Where the profit goes Growing

Stays in the company

No dividend for 2025. Retained profit grew to € 309,167.

People and assets in 2025

Vehicles and equipment

€ 98,377

▲ 117% vs 2024

Book value of vehicles, furniture and equipment.

Debts at end 2025

Bank debt ≈ 20 years to go The accounts give the long-term loan and the part due within the year. The remainder divided by that part is the number of years at an equal pace; a new loan or early repayment changes it.

€ 524,199

▲ 234% vs 2024

€ 26,523 is repaid this year. At this pace the long-term loan is gone in ≈ 20 years.

Owed to suppliers

€ 2,064

▲ 96% vs 2024

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

Taxes

€ 1,233

▼ 88% vs 2024

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

Key figures per fiscal year Download key figures (CSV)
	2022	2023	2024	2025	Change 2024 → 2025
Gross margin	€ 97,151 Gross margin 2022: € 97,151 First fiscal year in the series	€ 92,308 Gross margin 2023: € 92,308 ▼ 5% vs 2022 (€ 97,151) Unfavourable step	€ 129,976 Gross margin 2024: € 129,976 ▲ 41% vs 2023 (€ 92,308) Favourable step	€ 129,788 Gross margin 2025: € 129,788 Unchanged (€ 129,976) Unfavourable step
Profit after taxes	€ 53,164 Profit after taxes 2022: € 53,164 First fiscal year in the series	€ 49,830 Profit after taxes 2023: € 49,830 ▼ 6% vs 2022 (€ 53,164) Unfavourable step	€ 73,585 Profit after taxes 2024: € 73,585 ▲ 48% vs 2023 (€ 49,830) Favourable step	€ 62,349 Profit after taxes 2025: € 62,349 ▼ 15% vs 2024 (€ 73,585) Unfavourable step	▼ 15%
Equity	€ 220,017 Equity 2022: € 220,017 First fiscal year in the series	€ 242,860 Equity 2023: € 242,860 ▲ 10% vs 2022 (€ 220,017) Favourable step	€ 265,418 Equity 2024: € 265,418 ▲ 9% vs 2023 (€ 242,860) Favourable step	€ 327,767 Equity 2025: € 327,767 ▲ 23% vs 2024 (€ 265,418) Favourable step	▲ 23%
Total debts	€ 179,078 Total debts 2022: € 179,078 First fiscal year in the series	€ 195,668 Total debts 2023: € 195,668 ▲ 9% vs 2022 (€ 179,078) Unfavourable step	€ 177,456 Total debts 2024: € 177,456 ▼ 9% vs 2023 (€ 195,668) Favourable step	€ 541,019 Total debts 2025: € 541,019 ▲ 205% vs 2024 (€ 177,456) Unfavourable step	▲ 205%
Cash	€ 118,432 Cash 2022: € 118,432 First fiscal year in the series	€ 108,875 Cash 2023: € 108,875 ▼ 8% vs 2022 (€ 118,432) Unfavourable step	€ 138,787 Cash 2024: € 138,787 ▲ 27% vs 2023 (€ 108,875) Favourable step	€ 127,191 Cash 2025: € 127,191 ▼ 8% vs 2024 (€ 138,787) Unfavourable step	▼ 8%
Land & buildings	€ 257,061 Land & buildings 2022: € 257,061 First fiscal year in the series	€ 245,407 Land & buildings 2023: € 245,407 ▼ 5% vs 2022 (€ 257,061) Unchanged	€ 235,954 Land & buildings 2024: € 235,954 ▼ 4% vs 2023 (€ 245,407) Unchanged	€ 615,215 Land & buildings 2025: € 615,215 ▲ 161% vs 2024 (€ 235,954) Unchanged	▲ 161%
Retained profit	€ 201,417 Retained profit 2022: € 201,417 First fiscal year in the series	€ 224,260 Retained profit 2023: € 224,260 ▲ 11% vs 2022 (€ 201,417) Favourable step	€ 246,818 Retained profit 2024: € 246,818 ▲ 10% vs 2023 (€ 224,260) Favourable step	€ 309,167 Retained profit 2025: € 309,167 ▲ 25% vs 2024 (€ 246,818) Favourable step	▲ 25%
Dividend	€ 24,065 Dividend 2022: € 24,065 First fiscal year in the series	€ 26,987 Dividend 2023: € 26,987 ▲ 12% vs 2022 (€ 24,065) Unchanged	€ 51,027 Dividend 2024: € 51,027 ▲ 89% vs 2023 (€ 26,987) Unchanged	€ 0 Dividend 2025: € 0 ▼ 100% vs 2024 (€ 51,027) Unchanged	▼ 100%
Bank debt	€ 163,133 Bank debt 2022: € 163,133 First fiscal year in the series	€ 182,076 Bank debt 2023: € 182,076 ▲ 12% vs 2022 (€ 163,133) Unfavourable step	€ 157,121 Bank debt 2024: € 157,121 ▼ 14% vs 2023 (€ 182,076) Favourable step	€ 524,199 Bank debt 2025: € 524,199 ▲ 234% vs 2024 (€ 157,121) Unfavourable step	▲ 234%
Balance sheet total	€ 399,095 Balance sheet total 2022: € 399,095 First fiscal year in the series	€ 438,528 Balance sheet total 2023: € 438,528 ▲ 10% vs 2022 (€ 399,095) Unchanged	€ 442,874 Balance sheet total 2024: € 442,874 ▲ 1% vs 2023 (€ 438,528) Unchanged	€ 868,786 Balance sheet total 2025: € 868,786 ▲ 96% vs 2024 (€ 442,874) Unchanged	▲ 96%

Key figures of STUDIEBUREAU DIEDERIK AERTS, fiscal years 2022 to 2025, from the annual accounts filed with the National Bank of Belgium.Next annual account (fiscal year 2026) expected before 31 July 2027.

What happened to STUDIEBUREAU DIEDERIK AERTS?

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

Jun 19, 2026 New annual accounts for financial year 2025: profit of € 62,349 (▼ 15% vs 2024). Source: NBB ↗
Feb 2, 2018 New establishment in Bilzen-Hoeselt. KBO
Feb 2, 2018 Start of the company according to the CBE. KBO

In short

From € 53,164 profit in 2022 to € 62,349 profit in 2025.

Paid € 65,787 in corporate taxes since 2022.

Best year ever: 2024, with € 73,585 profit.

Paid out € 102,079 in dividends to the owners in total.

Original PDFs at the National Bank ↗

Management

Diederik Aerts Inge Castermans

STUDIEBUREAU DIEDERIK AERTS

Behind STUDIEBUREAU DIEDERIK AERTS are Diederik Aerts and Inge Castermans.

Directors

According to the 2025 annual accounts

Diederik Aerts

Director

Inge Castermans

Director

Establishments

Establishment units

Physical locations of this company

Registered office

L. Lambrechtsstraat 19

3730 Bilzen-Hoeselt

2.272.419.691

Kruisstraat 41

3730 Bilzen-Hoeselt

Active since 2 February 2018

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 →

Vereniging van Mede-eigenaars Residentie gelegen L. LAMBRECHTSSTRAAT 19 te 3730 Hoeselt

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

Website

HTTP diederikaerts.be

Technologies

Apache

Hosting & Email

Email provider

Self-hosted

Hosting

AS-ZXCS, NL

Website info

HTTPS Nee

Features

Security

✗ HTTPS

✓ SPF

✓ DMARC

Network

✓ IPv6

Details

Company number

0689.749.974

VAT number

BE 0689.749.974

Registered office

L. Lambrechtsstraat 19, 3730 Bilzen-Hoeselt

Names & denominations

STUDIEBUREAU DIEDERIK AERTS

Enterprise type

Rechtspersoon

Legal form

Private limited company

Legal situation

Normale toestand

Start date

2 February 2018

Peppol

Active · Active since 27 Jan 2026

Contact

diederikaerts.be [email protected]

Activities · NACE

Overige activiteiten van vrije beroepen en andere wetenschappelijke en technische activiteiten, neg

Overige gespecialiseerde wetenschappelijke en technische activiteiten

Overige gespecialiseerde ontwerpactiviteiten

Overige technische testen en toetsen

Activiteiten van ingenieurs en aanverwante technische adviseurs, exclusief landmeters-experts

Activiteiten van verpleegkundigen en verloskundigen

Overige activiteiten van gespecialiseerde designers

View on CBE Public ↗ Annual accounts (NBB) ↗

STUDIEBUREAU DIEDERIK AERTS

Financials

What happened to STUDIEBUREAU DIEDERIK AERTS?

Management

Directors

Establishments

Establishment units

Who else lives here?

Website

Technologies

Hosting & Email

Website info

Features

Security

Network

Details

Frequently asked questions