The damage to the unit has already been done.  

It can inflict damage on your unit. 

.- since he did not do the roof, there is now water damage from the leaky roof, to some of the new sheetrock and sub floor.Here is where we have gotten so far:**read a bunch of info on NOI, Pro forma, CAP, and looked at other delapated multi family buildings that have sold in the area. 

The water service has been shut off on the property due to freeze damage. 

if the missing appliances and damage happened after closing you may have an insurance claim.  

If the stairs are solid, the Landlord wouldn't normally be liable for damages.

I have read the transcripts of actual cases from Housing Court in my area and yes, there are horror stories about tenants who are awarded triple damages for what seem to me to be minor infractions.

I have a condo unit that had water damage to the ceiling of the master bedroom.

Ask FNMA for a reduction in price do to the damage.

They haven't paid this month's rent yet...HOWEVER< they filed a complaint with the city inspector for a different reason...so i am worried about retaliation..YET< they are late on rent and they caused damage to the kitchen.