For the checkout screen (custom OneStepCheckout plugin) I managed to succesfully add a custom validation rule on the second street input. Now I'd like to do the same for the default Address Book pages, but I can't seem to figure out where.
The custom rule "housenumber" has been added to the \Magento_Ui\web\js\lib\validation\rules.js files within my custom Theme. Preferably I'd like to use this same rule for validation within the edit page (relative path: /customer/address/edit/id/[XXX]/).
Unfortunately most information seems to be about the checkout page, not for the additional forms where addresses can be edited.