>Companies shouldn't wait to solve issues like this

Unless you built your house yourself, you should expect the construction company to be responsible for verifying the identities of anyone entering your house. Asking for a passport and a one time payment, just in case the person who rings the bell may not be a friend.

That should be proactively helping you in case you're a vulnerable homeowner. Not checking in on every visitor would be evil, no?

I can't think of a better approach.