Keep in mind, the weakest part of most doors isn't the lock, it's the 1/2in piece of wood holding the deadbolt in place.I saw these at a trade show and mentioned to the guy that they couldn't be rekeyed without the original key, and he showed me a tool that would unlock and rekey them without the original key.

Do we need to change the locks / re-key the unit before giving the keys to the new tenant?

The locksmith idea sounds like a bad one to me.

Yes, get a locksmith to unlock the doors so you can walk thru and inspect the as-is condition.

If you didn't, then it would have been necessary to follow abandonment procedures before you could reclaim your property and rekey the unit.2.  

So today they are having a locksmith open the unit.

I’ve talked with our local locksmith in town and they only take calls during normal work hours.

What do you do to keep your rekey/locksmith charges down?

If you ever go to enter your property, emergency or not, and the tenant has changed the lock, you are within your legal right to have a locksmith come and change the lock on YOUR property.

Buy two locks with matching keys or get them keyed to match by a locksmith or a hardware store so you only have to issue one key to access both of your doors.Schlage F80 ELA Elan Keyed Storeroom Leverhttps://www.americanlocksets.com/schlage-f80-ela-e...