using a locksmith when you arent the owner

[Martha Daisley]

Hi i have a situation where i need to use locksmith services but im not the owner of the property yet. im the buyer in the middle of doing a short sale on it. The bank needs access to the property in order to do the appraisel. The owner abandoned the property years ago.  He gave me the go ahead to change the locks and let the bank in but doesnt want to get too involved with anything or be bothered if he can help it. ive never had to do this before so how does this work? Do i just call the locksmith and i tell him the owner gave permission?