Credit check - obtain an economic report from the property developer

Only pay for what has actually been delivered. No advance payments.

Send me a link, then I'll take a look at the balance sheet.

The link unfortunately does not work. You just have to search for Konvent. Select Konvent in Oberhausen.

The commercial register says: registered in 1995 with 800 TDM capital, converted from AG to GmbH in 2010, retaining this size. The managing directors are presumably father and son, judging by the years. Read from the coffee grounds: rather not a risk patient, the guarantee should be affordable. The website says "since 1979", so presumably started as a sole proprietorship.