But you have a full time PM to police this issue and they will be costing you money to get the smoke odors cleared for new tenant turnover.

The tenants are now gone and we pulled up all the carpet, had the vents cleaned, used an ozone generator and we still have an odor coming from the cold air vents. 

She may also be the one smoking and plans on implicating another party should the odor be detected in her apartment.  

If he ends up being your final choice that's great, but if not, no harm no foul.

As soon as I and renewed the lease the tenant wrote me this long message with all these thing wrong, including drain smells bad(she’s been putting bleach down the drain to kill the odor, the lights in the kitchen and bedroom are flickering(this ones easily fixable) & the bathroom floor is in-caving because of water damage(she suggested a new shower door).

The dog has urinated on the carpet which will require replacement (professional cleaning did not get the stain/odor out) and possible replacement of the subfloor as well.

You see bars and restaurants in the same spots a lot of times and then you have noise and odor problems.

When you say the HML is not ready, is it a real HML that has a reputation to protect for not fouling up deals?

Urine odor and pet stains are not ordinary wear-and-tear and tenant should pay for it.

Even if it was in violation of the lease for the tenant to change the locks, if I get the keys, no harm/no foul in my view.If I am not getting the keys, that probably means the keys are the least of my worries - legally or condition-wise.Exception: if I weren't already evicting (or the tenant wasn't already vacating), and if the lease wasn't near the end, and if the tenant was troublesome but paid on time, then I *might* use the change of locks as an excuse to terminate the lease (if the lease allowed me to do so) and then serve the tenant with a 30-day notice.