How to find a Poland-located company's registered address?

If I want to check where a company (self-employed) has it's registered address, how do I do that?

Can I find this information online, and how much up to date would this information be?

What other information can I find about a self-employed person? And on what sites can I find this info?

You can check it in KRS although I don't know if any informations are available online.

It is generally not possible. Sole traders' data are not public.
However you can always try go to VIES database and check with the VAT number and if the sole trader has been registered with EU-VAT you will be able to see the address.

Companies are registered at the KRS.

If it's a sole trader and they have debts, it would show online on the KRD.

Oh dear. And you're trying to solicit for business?

prod.ceidg.gov.pl/CEIDG/CEIDG.Public.UI/Search.aspx

Sole trader database.

Related: I need to find the Polish company's registration details and its existence.


enjoy

D&B Poland Sp. z o.o.

ul. Jana Olbrachta 94,
01-102 Warszawa, Poland

T: +48 22 533 24 00
F: +48 22 533 24 24
@: info@dnb.com.pl

Ustuei transport
Z.kobylinski
06-200makov
Max.,up
Poland 34

I am after an email address for this company please

Kobyliński Zbigniew Usługi Transportowe
kobylinscy@tlen.pl
tel. 29 717 03 33
ul. Mazowiecka 18
06-200 Maków Mazowiecki
woj. mazowieckie