Hi there,
Is it possible (or is there a snippet/add-on) somewhere to validate the street+house number field in the default address field contains a house number?
Cheers!
You want to check to be sure that the street or street 2 (do you use both lines of the street in your address field?) contains a number? Here is documentation for that filter, targeting the address field specifically.
Your validation rules will be different (checking a string for any number value) but that will be the general approach.