SEI is an architecture firm in Kapelle-op-den-Bos. Private Limited, started on 12 July 2005, 1 establishment.

What is the address of SEI?

The registered office of SEI is located at Oxdonkstraat 160, 1880 Kapelle-op-den-Bos.

Yes. According to the CBE (17 September 2026) SEI is active, legal situation “Normale toestand”, started on 12 July 2005.

Is SEI registered on Peppol?

Yes, SEI is registered on the Peppol network with ID 0208:0875021459.

What is the enterprise number of SEI?

The enterprise number of SEI is BE0875021459.

When was SEI founded?

SEI was founded on 12 July 2005.

Who are the directors of SEI?

According to the 2024 annual accounts, the directors of SEI are: Wannes Thienpont.

Is SEI a reliable company?

Databakkes does not pass judgement; this is what the sources say: Active according to the CBE since 12 July 2005; 4 annual accounts filed, latest fiscal year 2024; 1 directors known from the annual account.

How much profit did SEI make in 2024?

SEI recorded a loss after taxes of € 2,621 in financial year 2024.

What is the revenue of SEI?

As a small company, SEI is not required to publish revenue in its annual accounts. In financial year 2024, its added value was € 7,305.

SEI (Private Limited) - Kapelle-op-den-Bos - BE0875021459

Dossier SEI, printed on 17 September 2026 from databakkes.be/en/0875021459/sei. Sources: CBE, National Bank of Belgium, Belgian Official Gazette.

Warning lights

Signals from the annual accounts, the CBE and the Official Gazette, each with its threshold and source. No score, no verdict.

Two loss years in a row NBB

Negative result in 2023 and 2024.

Financials

Financial year 2024

SEI from Kapelle-op-den-Bos, company number BE0875021459, closed financial year 2024 with a result of € -2,621 after tax. For that financial year SEI recorded a gross margin of € 7,305 and equity of € 153,038. Compared with financial year 2023, the result moved from € -15,892 to € -2,621. The company made a loss. 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 July 30, 2025.

What it is worth Healthy

€ 153,038

▼ 2% vs 2023

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

Loss Caution

€ -2,621

▲ 84 % less loss than in 2023

Profit after tax over the fiscal year.

Cash in the bank

€ 73,076

▲ 27% vs 2023

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

Where the profit goes Caution

Loss, nothing to pay out

Reserves fell to € 68,230.

People and assets in 2024

Full-time equivalents estimate The annual accounts report no full-time equivalents. A micro company with one active director is usually run by that person; this is an assumption, not a figure from the source.

≈ 1

No payroll staff. One director, so that person most likely runs the business.

Vehicles and equipment

€ 20,440

▼ 18% vs 2023

Book value of vehicles, furniture and equipment.

Debts at end 2024

Bank debt

None

No bank loans on the last day of the fiscal year.

Owed to suppliers

€ 2,093

▼ 81% vs 2023

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

Taxes

€ 1,614

▲ 168% vs 2023

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)
	2021	2022	2023	2024	Change 2023 → 2024
Gross margin	€ 27,704 Gross margin 2021: € 27,704 First fiscal year in the series	€ 42,195 Gross margin 2022: € 42,195 ▲ 52% vs 2021 (€ 27,704) Favourable step	€ -9,330 Gross margin 2023: € -9,330 ▼ € 51,526 vs 2022 (€ 42,195) Unfavourable step	€ 7,305 Gross margin 2024: € 7,305 ▲ € 16,636 vs 2023 (€ -9,330) Favourable step	▲ € 16,636
Profit after taxes	€ 5,254 Profit after taxes 2021: € 5,254 First fiscal year in the series	€ 25,075 Profit after taxes 2022: € 25,075 ▲ € 19,821 vs 2021 (€ 5,254) Favourable step	€ -15,892 Profit after taxes 2023: € -15,892 ▼ € 40,967 vs 2022 (€ 25,075) Unfavourable step	€ -2,621 Profit after taxes 2024: € -2,621 ▲ € 13,271 vs 2023 (€ -15,892) Favourable step	▲ € 13,271
Equity	€ 167,513 Equity 2021: € 167,513 First fiscal year in the series	€ 176,552 Equity 2022: € 176,552 ▲ 5% vs 2021 (€ 167,513) Favourable step	€ 155,660 Equity 2023: € 155,660 ▼ 12% vs 2022 (€ 176,552) Unfavourable step	€ 153,038 Equity 2024: € 153,038 ▼ 2% vs 2023 (€ 155,660) Unfavourable step	▼ 2%
Total debts	€ 54,915 Total debts 2021: € 54,915 First fiscal year in the series	€ 77,735 Total debts 2022: € 77,735 ▲ 42% vs 2021 (€ 54,915) Unfavourable step	€ 39,365 Total debts 2023: € 39,365 ▼ 49% vs 2022 (€ 77,735) Favourable step	€ 24,455 Total debts 2024: € 24,455 ▼ 38% vs 2023 (€ 39,365) Favourable step	▼ 38%
Cash	€ 110,891 Cash 2021: € 110,891 First fiscal year in the series	€ 172,823 Cash 2022: € 172,823 ▲ 56% vs 2021 (€ 110,891) Favourable step	€ 57,723 Cash 2023: € 57,723 ▼ 67% vs 2022 (€ 172,823) Unfavourable step	€ 73,076 Cash 2024: € 73,076 ▲ 27% vs 2023 (€ 57,723) Favourable step	▲ 27%
Retained profit	€ 82,705 Retained profit 2021: € 82,705 First fiscal year in the series	€ 91,744 Retained profit 2022: € 91,744 ▲ 11% vs 2021 (€ 82,705) Favourable step	€ 70,852 Retained profit 2023: € 70,852 ▼ 23% vs 2022 (€ 91,744) Unfavourable step	€ 68,230 Retained profit 2024: € 68,230 ▼ 4% vs 2023 (€ 70,852) Unfavourable step	▼ 4%
Dividend	€ 0 Dividend 2021: € 0 First fiscal year in the series	€ 16,036 Dividend 2022: € 16,036 Unchanged (€ 0) Unchanged	€ 5,000 Dividend 2023: € 5,000 ▼ 69% vs 2022 (€ 16,036) Unchanged	€ 0 Dividend 2024: € 0 ▼ 100% vs 2023 (€ 5,000) Unchanged	▼ 100%
Balance sheet total	€ 222,428 Balance sheet total 2021: € 222,428 First fiscal year in the series	€ 254,287 Balance sheet total 2022: € 254,287 ▲ 14% vs 2021 (€ 222,428) Unchanged	€ 195,024 Balance sheet total 2023: € 195,024 ▼ 23% vs 2022 (€ 254,287) Unchanged	€ 177,493 Balance sheet total 2024: € 177,493 ▼ 9% vs 2023 (€ 195,024) Unchanged	▼ 9%

Key figures of SEI, fiscal years 2021 to 2024, from the annual accounts filed with the National Bank of Belgium.The annual account for fiscal year 2025 has not been filed yet; it was expected before 31 July 2026.

What happened to SEI?

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

Jul 30, 2025 New annual accounts for financial year 2024: loss of € 2,621. Source: NBB ↗
Jul 12, 2005 New establishment in Kapelle-op-den-Bos. KBO
Jul 12, 2005 Start of the company according to the CBE. KBO
2005 Wannes Thienpont became a director. NBB

In short

From € 5,254 profit in 2021 to € 2,621 loss in 2024.

Paid € 21,100 in corporate taxes since 2021.

Best year ever: 2022, with € 25,075 profit.

Paid out € 21,036 in dividends to the owners in total.

Original PDFs at the National Bank ↗

A new publication or filing at SEI? We notify you, reason included.

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My folder 3 companies

De Lijn 8 June 2026 New annual account 2025

filed on 8 June 2026

What was left

€ 20 k ▼ 91%
Money in the bank

€ 178 k ▼ 98%

Open the dossier →
NMBS 8 June 2026 New annual account 2025 What was left ▼ 80%
bpost 18 May 2026 New annual account 2025 What was left from loss to profit

Real filings at the National Bank

Management

Wannes Thienpont

SEI

Behind SEI is Wannes Thienpont.

See the full network in the app

Directors

According to the 2024 annual accounts

Wannes Thienpont

Director

since 2005

Establishments

Establishment units

Physical locations of this company

Registered office

Oxdonkstraat 160

1880 Kapelle-op-den-Bos

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

Details

Company number

0875.021.459

VAT number

BE 0875.021.459

Registered office

Oxdonkstraat 160, 1880 Kapelle-op-den-Bos

Names & denominations

SEI

Enterprise type

Rechtspersoon

Legal form

Private limited company

Legal situation

Normale toestand

Start date

12 July 2005

Peppol

Active · Active since 20 Oct 2025

Activities · NACE

Activiteiten van interieurarchitecten

Installatie van isolatie

Beoefening van uitvoerende kunsten door zelfstandig werkende artiesten

Isolatiewerkzaamheden

Zelfstandig werkende kunstenaars en artiesten

View on CBE Public ↗ Annual accounts (NBB) ↗

SEI