Warning lights
Signals from the annual accounts, the CBE and the Official Gazette, each with its threshold and source. No score, no verdict.
-
Busy address KBO
13 other companies have their registered office at the same address; threshold 10.
Financials
Financial year 2025
SISSAU CONSTRUCT from Middelkerke, company number BE0554738545, closed financial year 2025 with a result of € 970,505 after tax. For that financial year SISSAU CONSTRUCT recorded a gross margin of € 1.4 million and equity of € 1.3 million. Compared with financial year 2024, the result moved from € -121,489 to € 970,505. Profitable, and profit is growing. The buffer is growing. Debts are under control. The most recent annual accounts were filed with the National Bank of Belgium on July 23, 2026.
€ 1.3 million
▲ € 970,505 vs 2024
Assets minus debts, by the books. What is left if everything were sold and paid today.
€ 970,505
▲ still € 121,489 loss in 2024
Profit after tax over the fiscal year.
€ 906,088
▲ 86% vs 2024
Cash and bank balances on the last day of the fiscal year.
Stays in the company
No dividend for 2025. Retained profit grew to € 1.3 million.
People and assets in 2025
0.6
▲ 0.1 vs 2024
Average over the fiscal year, from the social balance sheet.
€ 31,943
▲ 49% vs 2024
Payroll staff only. What the director pays themselves is already netted into the gross margin and is not shown separately in the accounts.
Debts at end 2025
€ 1.3 million
▲ 218% vs 2024
Loans from banks and other lenders, long and short.
€ 1.7 million
▲ € 1.6 million vs 2024
Supplier invoices still open on the last day of the fiscal year.
€ 203,862
▲ 11% vs 2024
Taxes, VAT and social contributions still to pay.
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| 2022 | 2023 | 2024 | 2025 | Change 2024 → 2025 | |
|---|---|---|---|---|---|
| Gross margin | € -52,420 | € 127,685 | € -50,208 | € 1,448,515 | ▲ € 1.5 million |
| Profit after taxes | € -63,946 | € 110,631 | € -121,489 | € 970,505 | ▲ € 1.1 million |
| Equity | € 318,771 | € 429,402 | € 307,913 | € 1,278,418 | ▲ € 970,505 |
| Total debts | € 3,102,087 | € 1,889,732 | € 2,832,156 | € 5,298,744 | ▲ 87% |
| Cash | € 816,117 | € 235,181 | € 487,921 | € 906,088 | ▲ 86% |
| Retained profit | € 300,171 | € 410,802 | € 289,313 | € 1,259,818 | ▲ € 970,505 |
| Bank debt | € 200,000 | € 200,000 | € 399,290 | € 1,268,105 | ▲ 218% |
| Balance sheet total | € 3,420,858 | € 2,319,134 | € 3,140,069 | € 6,577,162 | ▲ 109% |
| Employees (FTE) | - | - | 0.5 | 0.6 | ▲ 0.1 |
Key figures of SISSAU CONSTRUCT, 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 SISSAU CONSTRUCT?
What happened at SISSAU CONSTRUCT in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:
- New annual accounts for financial year 2025: profit of € 970,505. Source: NBB ↗
- Martine De Nie became a director. NBB
- Karel Sissau became a director. NBB
- New establishment in Middelkerke. KBO
- Start of the company according to the CBE. KBO
In short
From € 63,946 loss in 2022 to € 970,505 profit in 2025.
Paid € 313,492 in corporate taxes since 2022.
Best year ever: 2025, with € 970,505 profit.
A new publication or filing at SISSAU CONSTRUCT? We notify you, reason included.
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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
Management
Behind SISSAU CONSTRUCT are Martine De Nie and Karel Sissau. The same people are also behind AGENCE SISSAU, SISSAU INVEST and DERMUL VASTGOED EN BEHEER. Martine De Nie is also behind IMMO DE Nie, DENIMMO, DENIBAUW and DE NIE CONSTRUCT. Karel Sissau is also behind SISSAU - IMMOBILIEN, MIDDELKERKSE IMMOBILIENMAATSCHAPPIJ, MIM-INVEST, COOPERATIEVE INVESTERINGS-EN BELEGGINGSMAATSCHAPPIJ VOOR VASTGOEDMAKELAARS and IMMO MID-WEST.
Directors
According to the 2025 annual accounts
Martine De Nie
Director
Also active at: IMMO DE Nie, DENIMMO, AGENCE SISSAU, DENIBAUW, SISSAU INVEST, DERMUL VASTGOED EN BEHEER, DE NIE CONSTRUCT
since 2023
Karel Sissau
Director
Also active at: SISSAU - IMMOBILIEN, AGENCE SISSAU, MIDDELKERKSE IMMOBILIENMAATSCHAPPIJ, SISSAU INVEST, DERMUL VASTGOED EN BEHEER, MIM-INVEST, COOPERATIEVE INVESTERINGS-EN BELEGGINGSMAATSCHAPPIJ VOOR VASTGOEDMAKELAARS, IMMO MID-WEST
since 2023
Establishments
Establishment units
Physical locations of this company
Zeedijk 127
8430 Middelkerke
Who else lives here?
A building full of entrepreneurs or one very busy letterbox? Another 13 companies are registered at this address.
All companies at this address →SISSAU - IMMOBILIEN same network
€ 1 million gross margin · 2025
DENIBAUW same network
€ -8,537 gross margin · 2025
SISSAU INVEST same network
€ 37,602 gross margin · 2025
TRINITY
Vision I
+8 more
What is an establishment unit? An establishment unit is a geographically identifiable place where activities of the enterprise are carried out.
Website
Technologies
Hosting & Email
Email provider
Microsoft 365
Hosting
COMBELL-AS, BE
Website info
Features
Security
Details
- Company number
- 0554.738.545
- VAT number
- BE 0554.738.545
- Registered office
- Zeedijk 127, 8430 Middelkerke
- Names & denominations
- SISSAU CONSTRUCT
- Enterprise type
- Rechtspersoon
- Legal form
- Private limited company
- Legal situation
- Normale toestand
- Start date
- 23 June 2014
- Peppol
- Active · Active since 24 Nov 2023
- Contact
- sissau.be
- Activities · NACE
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