I call the locksmith and we go change the locks in front of the Sheriff.

I use Harry Mueller locksmith http://www.keymanerie.comI’ve used him to change all locks and put onto a master key.

@Eli Altman If you intend to open it, I'd take it to an experienced locksmith.

Also, do I bring a locksmith with me to open the place up?

Lock smith entered common area.

Just get an eviction company to come take the person's stuff out to the curb, and either change the locks yourself or have a locksmith do it as soon as they are out. 

Let them pay a locksmith to fix the door knob.

so we finally get possession of our duplex we won at auction. legally, the company we went through to get deed said, we cannot talk to anyone or enter the property until the 30 day eviction is up. so this Saturday is the day the we willl go over and get a locksmith to enter.my wife found out from neighbor there is a 20 year long tenant upstairs but the owner lived in lower unit.

The locksmith is coming Monday, I got a verbal from the bank to accept less than full amount on the lates and penalties and might be able to get this place nailed down by mid-March or so.

Forgot the kickback from the locksmith.