We will have 2 means of e-gress, proper ceiling height (7ft. 6in), 1,500 sq. ft per unit, etc. for the basement. 

If you find a new job, I'd recommend selling a top-notch product or service that doesn't have a ceiling on your commissions (SAAS companies are a great candidate).

The first remediation company went to assess the damage and told us an overwhelming amount of work that they will have to do in order to repair the water damage, including demo the kitchen cabinets from the walls, potentially destroying the counter top, opening up downstairs bedroom drywall, ceiling and some carpeting, and that they will not be able to put anything back due to liability concerns (the fact that they are not licensed contractors to perform such types of work).

@Dan Worontzoff In addition to window height, ceiling height and multiple means of egress will also be an issue. 

., its as if all the drywall/ ceiling material has fallen through with debris everywhere and only the support beams visible when standing below and looking up). 

Ceiling lights on the first floor (or 2nd with no attic) are the hardest, but again, a few holes that need patching.

The space has 12 foot ceilings, has a kitchenette and a bathroom without a shower.

If the floor falls in or the ceiling falls on him and injures him would I be liable for unsafe living conditions?

. -1 set of exposed wires in basement-1 loose ceiling tile -a fixture on the ceiling that is loose- a sink In the basement that is too close to the electrical panel He has not paid rent and I have begun process of eviction.

In this case, I added two ceiling fans, change two light fixtures, upgraded the kitchen faucet, and changed out an old shower head.