How to prevent professional renter claim rental is uninhabitable?

[Jin Zhang]

Hi everyone, 

I was reading online about professional renters. Some of them would claim the rental is uninhabitable. When a tenant makes a claim that the property is unfit to live in, landlords must refile with proof of a habitable environment. Tenants will then proceed to trash the property in an attempt to justify their claim.

My question is how do you get proof of a habitable environment during tenancy and how do you prove that your property is habitable before the tenant trashed it? How do prove that the tenant purposely trashed the place? 

Any suggestions? 

Best,

Jin