Auth a credit card with address verification? That’s how usps does it for forwarding proofing. Could also mail a postcard with a code on it using Lob to verify residency pre move.

Alternatively, ask for a copy of the lease and ID. Throw both away after verifying and set is_verified = True.

Any system can be gamed, you’re just trying to make it hard enough that most bad actors are waved off while keeping your costs reasonable.

(Landlord/housing provider and renter intermittently)