TJT Katto Oy

OYActive

Y-tunnus 2911097-5Aunankorvenkatu 10, 33840 TampereConstruction of residential and non-residential buildings · NACE 4100Est. 2018— employees

Overview Financials People & ownership Related companies

TJT Katto Oy is a Finnish OY based in Tampere, operating in the Construction of residential and non-residential buildings sector. Incorporated in 2018, the company reported revenue of EUR 348K in its latest annual filing.

Revenue 2025

EUR 348K

-65% vs 2024

EBITDA margin

-11.3%

-183% vs 2024

Equity ratio

66.0%

Financial strength

Net profit 2025

EUR -47K

-256% vs 2024

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 348K	-65%
EBITDA	EUR -39K	-183%
Net profit	EUR -47K	-256%
Total assets	EUR 77K	-64%
Equity	EUR 51K	-48%
Employees	—	—

Contact

Address

Aunankorvenkatu 10, 33840 Tampere

Phone

+3580400993368

heikki.kilpiainen@julkisivutekniikka.fi

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Frequently asked questions

What is the Y-tunnus number of TJT Katto Oy?

TJT Katto Oy is registered with PRH / YTJ under Y-tunnus 2911097-5.

What is the revenue of TJT Katto Oy?

TJT Katto Oy reported revenue of EUR 348K in 2025.

Who is the CEO of TJT Katto Oy?

Pentti Uolevi Haapanen is Deputy auditor of TJT Katto Oy, in role since 2018.

Who is the chairman of TJT Katto Oy?

Heikki Johannes Kilpiäinen chairs the board of TJT Katto Oy, in role since 2018.

Where is TJT Katto Oy headquartered?

TJT Katto Oy's registered address is Aunankorvenkatu 10.

TJT Katto Oy

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on TJT Katto Oy

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on TJT Katto Oy