@Cherry Newman between the water bill and the water damage don't you think it would be a good idea to take the hit on eviction now before they leave the stove on and do more damage.  

I am buying my first house hack.I’m almost at closing and the appraisal says the stove in the mother-in-law suite is not up to code and needs to be removed before closing.Is this whole deal dead?

PMs in general don't ask tenants qualifying questions when they get the "my (sink, toilet, stove, a/c, etc) is broke" call. 

My question: All the apartments had gas stoves, and all the stoves have been removed, but, surprisingly, all the copper piping is still there, exposed (the copper thieves haven't gotten to it yet).

. - the stove broke we had to replace it.I've learned that property managers need managing.

Houston tx location. gas stove and gas heater

Second, do you distinguish between "essential" and "non-essential", i.e. a stove and fridge might be considered "essential" and washer/dryer or dishwasher not so much the former is on you the later is on them?

I installed an exhaust fan over their stove and I know that they use it, but it’s overmatched I’m afraid.

They're like two feet off the ground, no way to add a counter there without looking ugly/blocking significant areas of the window)I'm probably going to remove the stove and fridge and replace them with stainless steel ones. 

The location of water line/sink will be changed (likely not useable during reno), but the gas stove will remain in the same location (likely useable during reno).