What is the main business of Windbau?

The main business activity of Windbau focuses on construction of other civil engineering projects n.e.c..

When was the company founded?

The company was registered in the Polish National Court Register (KRS) on July 10, 2008.

Where is the headquarters located?

The headquarters is located at: ul. Kwiatowa 23, 88-110 Jacewo.

Who is on the management board?

The management board consists of: Józef Leon Ziaja (President of the Management Board).

What is the share capital?

The share capital of the company is PLN 50,000 (approx. $13,506).

What period do the latest financial data cover?

The latest available financial statement covers the period from January 1, 2025 to December 31, 2025.

How much revenue was generated?

In 2025, the company generated total revenue of USD 0, representing a decrease of 23.1% compared to 2024.

Is the company profitable?

No, the company recorded a net loss of USD 2,438 in 2025. For comparison, in 2024 the loss was USD 1,576, meaning the company increased its loss by 54.4%.

What is the largest operating cost?

The largest operating cost category falls under other operating costs. This category amounted to USD 2,396 in 2025, representing 100% of all operating expenses.

Windbausp. z o.o.

Construction of other civil engineering projects n.e.c.

KRS: NIP: REGON:

Overview

Status

Active

Registry date

2008-07-10

Share capital

50,000.00 PLN

Registered address

ul. Kwiatowa 23, 88-110 Jacewo, Poland

Electronic delivery address

AE:PL-64958-76091-EIREW-26

Financials

Revenue history (in k)

Filing timeliness

1 of 6 financial statements was filed late (for 2021, 91 days late).

202525/06/2026
202410/07/2025
202308/07/2024
202210/07/2023
202114/10/2022
202012/10/2021

Filed on timeDelayFiling deadline

Data and insights are generated automatically from financial statements – they may contain errors and are neither a credit assessment nor business advice.

Statistics

How the company ranks by revenue within its industry, city, voivodeship and across Poland in 2025.

Industry · Construction of other civil engineering projects n.e.c.397 / 403

Top 99%

Division · Civil engineering3,702 / 3,732

Top 99%

Sector · Construction16,826 / 17,120

Top 98%

Voivodeship · Kujawsko-Pomorskie11,239 / 11,485

Top 98%

Country · Poland292,931 / 297,935

Top 98%

Results vs industry

Revenue

This companyUSD 0.30MedianUSD 523.59kAverageUSD 6.55m

Net profit

This companyUSD -2.44kMedianUSD 24.56kAverageUSD 320.50k

Operating costs

This companyUSD 2.40kMedianUSD 456.61kAverageUSD 5.90m

Assets

This companyUSD 14.58kMedianUSD 446.55kAverageUSD 5.68m

Industry

Authorized Representatives

Józef Leon Ziaja – President of the Management Board

Manner of representation

If the management board is a one-person management board, the sole member of the management board has the right to represent the company independently. If the management board is a multi-member management board, the President of the Management Board has the right to represent the company independently. Representation of the company by the second member of the management board requires joint action with the President of the Management Board.

Ownership

Owner	Shares	Share value	Stake
Irena Ziajaage 57	992	$13,398.16	99.2%
Józef Leon Ziaja	8	$108.05	0.8%

Irena Ziaja and Józef Leon Ziaja hold a combined 100% – the ownership structure indicates family control.

Beneficial owners

Person	Rights

Bank accounts

Registered as a VAT taxpayer on 2008-08-01.

Erste Bank Polska
98 1090 2590 0000 0001 3513 8342
Bank Pekao SA
48 1240 1183 1111 0010 8775 1386

Debt

No entries in the National Debtors Register (KRZ).

MSiG notices

Publication date	Event
Nov 15, 2018	Call to creditors

Public aid

No public aid cases recorded in the last 10 years.

Competitors

Name	Revenue	Website
Drogi Powiatowesp. z o.o.	$2.94	wabrzezno.pl
Budownictwosp. z o.o.	$0.46	kprm.com.pl
Budimex Most WschodniS.A.	$0.40	mostwschodni.budimex.pl

Change history

Date	Event
2025-12-08	Switch to PKD 2025 (7 PKD 2007 codes → 7 PKD 2025 codes)
2021-06-10	Address change (Ul. Dworcowa 52/54, 88-100, Inowrocław → Ul. Kwiatowa 23, 88-110, Jacewo)
2020-03-16	Address change (Ul. Kazimierza Pułaskiego 45, 85-619, Bydgoszcz → Ul. Dworcowa 52/54, 88-100, Inowrocław)
2017-02-23	Address change (Jacewska 32, 88-100, Inowrocław → Ul. Kazimierza Pułaskiego 45, 85-619, Bydgoszcz)
2017-02-23	PKD change (Removed: 24 codes)

FAQ

Last updated: 2026-10-07