The risk of non-payment falls onto the bank we are partnered with. The finance agreement is between us (and the bank) and the customer, so the tradesperson is completely de-risked
We currently require our contractors to be associated with a regulatory body, who can inspect their work if a dispute arises. In the UK, this is mandatory anyway. The customer also signs a satisfactory notice on completion, and we encourage them to ensure they are happy with the work before signing the note