How many detectors, frequency of battery changes, battery or hardware, carbon monoxide required, etc?

You need a lead disclosure, smoke and carbon detector notice, pet agreement, we also use their non standard lease provisions and pet agreements.

I will say the factors that lead to the 2008 crash are not in motion right now, so that event is highly unlikely to repeat in the near future.

So for example installing noise detectors to ensure people aren't throwing parties or being disruptive. 

I had to replace pretty much everything metal in that room, door hinges, door knobs, smoke detector, metal wall art (why did they even think that was a good idea?)

You need to show every single thing you could possibly take off for, such as broken blinds/windows/missing smoke detectors, holes in the walls, etc.   

Go through the motions of removing the tenant, if somehow you go to court and they tell the judge that no such tenant exists then problem solved.

This included painting the entire unit, a new refrigerator, new stove vent, window screens, blinds, shower caulk, carpet clean, removal of left behind items, HVAC service, level ac unit, replace smoke detectors, replace toilet seats, and several other small items.

1 Smoke Detector, Bedroom #11 Smoke Detector, Bedroom #21 Smoke Detector, Bedroom #31 Smoke & Carbon Monoxide Detector Combo, Hallway (outside bedrooms)1 Smoke & Carbon Monoxide Detector Combo, Kitchen1 Smoke & Carbon Monoxide Detector Combo, BasementI buy the 10 year battery life

The judge said that he would have to go through the entire motions, case laws, and then make a ruling.