As part of that inspection, they do look at fire safety including such items as hard wired smokes/CO and a heating equipment inspection. 

He's on a month to month lease–can we create a new lease, with new non smoking provisions, indicate that he's now responsible for x dollars for utilities ON TOP of rent...?

At the end of the day, your question of who you can trust is a shot in the dark. this business is very much built on relationship, so your best bet is likely to identify a reputable company that is transparent, that has existing relationships with trustworthy GCs, and has in place property managers to oversee the day to day details for you.

This is a shot in the dark; and we’re not even sure if you are open to selling.

Neighbor complaints about noise, smoking, loitering, etc.3. 

What about section 8 inspections, annual Inspections, lock outs, lock changes, turnovers, CO detector compliance, smoke alarm installs, doors not closing, water leaks, lead paint issues, collection issues, evictions, vacancy, etc…If I’m spending 10-100K or more on a property across the country I’m happy to pay a PM service to keep my asset in good standing.

I digress....My general contractor is very poor at responding/communicating and I deeply regret not doing more about this sooner but since August this is what he has done:replaced the shinglesreplaced the heat pump unitsealed the flat roof with elastomeric coating, but got the silver material all over the dark brown gutters so it looks horrendousReplaced the outside A/C unitReplaced the well motor/pump, but no further testing of the well or plumbing has been done.This is what I have done (keep in mind, I have a full time job and also run a small side business):Built a new front door from scratch (it was pointed and not rectangular so no off the shelf options).

@John Horner Holy Smokes those are atrocious numbers!

Holy smokes congrats!!

Visual smoke/CO alarms (which also have audio signals) will appeal to many.