What is the main business of Kotner?

The main business activity of Kotner focuses on plumbing, heat and air-conditioning installation.

When was the company founded?

The company was registered in the Polish National Court Register (KRS) on January 28, 2022.

Where is the headquarters located?

The headquarters is located at: ul. Złota 7, 00-019 Warszawa.

What is the share capital?

The share capital of the company is PLN 6,000 (approx. $1,621).

What period do the latest financial data cover?

The latest available financial statement covers the period from January 1, 2024 to December 31, 2024.

What was the revenue?

The company reported a revenue of $225,995 in 2024, which is an increase of 1.0% compared to 2023.

Yes, in 2024 the company was profitable, achieving a net profit of $78,840, meaning the company increased its profit by 291.9%.

What is the main operating cost?

The largest operating cost category falls under materials and energy. This category amounted to $84,250 in 2024, representing 63% of all operating expenses.

Kotnersp. z o.o.

Plumbing, heat and air-conditioning installation

KRS: NIP: REGON:

Overview

Status

Active

Registry date

2022-01-28

Share capital

6,000.00 PLN

Registered address

ul. Złota 7/1, 00-019 Warszawa, Poland

Financials

Revenue history (in k)

Filing timeliness

No financial statement for 2025 – the filing deadline has passed. 1 of 2 financial statements was filed late (for 2023, 36 days late).

2025not filed
202410/06/2025
202320/08/2024

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 2024.

Industry · Plumbing, heat and air-conditioning installation2,423 / 4,159

Top 58%

Division · Specialised construction activities8,566 / 16,260

Top 53%

Sector · Construction13,442 / 24,234

Top 55%

Voivodeship · Mazowieckie63,208 / 142,035

Top 45%

Country · Poland229,438 / 495,867

Top 46%

Results vs industry

Revenue

This companyUSD 225.99kMedianUSD 332.07kAverageUSD 1.34m

Net profit

This companyUSD 78.84kMedianUSD 13.83kAverageUSD 74.96k

Operating costs

This companyUSD 134.26kMedianUSD 302.32kAverageUSD 1.23m

Assets

This companyUSD 133.17kMedianUSD 193.16kAverageUSD 867.14k

Industry

Authorized Representatives

Justyna Katarzyna Łukowska – Management Board Member

Mariusz Stanisław Mielczarek – President of the Management Board

Manner of representation

Each member of the management board is authorized to make declarations on behalf of the company independently.

Ownership

Owner	Shares	Share value	Stake
Mariusz Stanisław Mielczarekage 48	57	$1,539.71	95%
Others	3	$81.04	5%

The articles of association place no restrictions on share transfers.

Beneficial owners

Person	Rights

Bank accounts

Was a VAT taxpayer from 2023-05-24 to 2026-04-30.

Reason for removal: Art. 96 ust. 9 pkt 2 (contact with the taxpayer or their representative is impossible despite documented attempts)

Debt

No entries in the National Debtors Register (KRZ).

Public aid

No public aid cases recorded in the last 10 years.

Competitors

Name	Revenue	Website
Bygger Polskasp. z o.o.	$386,965.13	byggerpolska.pl
Borexsp. z o.o.	$360,410.60	przepychanie.pl
Brabud Warszawasp. z o.o.	$289,748.87	brabud.pl
Inwarmsp. z o.o.	$235,375.05	inwarm.pl
Klimaventsp. z o.o.	$138,909.52	klimavent.pl
Klimax - Twoja Klimatyzacjasp. z o.o.	$132,340.35	klimax.net.pl
Decomfsp. z o.o.	$129,012.74	decomf.pl
Termoinnowacjesp. z o.o.	$120,799.94	termoinnowacje.pl
HVAC Engineeringsp. z o.o.	$89,131.17	hvacengineering.pl
Eco Living Conceptsp. z o.o.	$58,816.22	ecolivingconcept.pl

Change history

Date	Event
2023-04-21	Address change (Ul. Złota 7/18, 00-019, Warszawa → Ul. Złota 7/1, 00-019, Warszawa)
2023-04-21	PKD change (Removed: 6 codes; Added: 6 codes)
2022-01-28	Entered in the register

FAQ

Last updated: 2026-04-11