Securing (changing locks) on an unlocked vacant house in a virtual wholesale deal

[David Sicherman]

So I have a house under contract hours and hours from me, the owner also lives hours away from property.  Sent a photographer to take pics, and the house isn't locked, the doors are unlocked, the place is vacant.

Need to know how you go about securing a house when you and the owner don't live there.  Best idea I have is hiring a handyman off craigslist to change the locks and put one key in the mail to me, and one in  lockbox at the house.