The entire reason I hired a company is they are the experts and I expect them to take full accountability of making sure I am in the know and 100% compliant.

@Alan Grobmeier  you will love this from your perspective.I bid on a 40 unit section 8 project in Hattisburg MS.. a few years back ( did not get it)but the builder was brilliant he built these for his style of tenant  Block construction painted on the inside and out.. concrete floors... and industrial grade doors and hinges... floor sloped alittle to a main drain in the middle... concrete counter tops  etc etc.so when tenant went out  high pressure hose came in and cleaned it all out  LOL.. you take little homes in the mid west that are lath and plaster or sheet rock with carpets and you will be spending a ton of money on turn over.my new construction I bought in MS were all stained concrete floors... only carpet in bed rooms.

It's too much risk for me until someone can give concrete suggestions of how insurance policy(ies) can accommodate the rental arbitrage scenario.

Even if it is sitting on a concrete foundation.

@Robert B Azimi measure it and call a concrete guy.

Block construction cement floors with the floors sloping to a central drain. concrete counter tops stainless kitchen cabinets boob lights and minimum windows by code .

Like others have said, Id do WHATEVER you need to to get a COMPLIANT sprinkling system up ASAP.

You can use petscreening.com to handle this task for you and ensure you are compliant, but I still recommend you really understand the law so you can answer questions or assist with requests. 

First floor must be commercial and must be ADA compliant. 

I cant find anything concrete on Box.com integration on their website but assuming any of these cloud document storage companies would work?