Not everyone is going to be voluntarily compliant to this request. 

Getting a hold of someone that is knowledgeable on your specific questions and can give concrete answers will never happen in the NYC DOB.

Thanks Patricia and Allen for great suggestions , As a next concrete step I ll try reaching out to the Corporate housing groups , hospitals and universities 

Also, there's the added risk of being compliant with federal regulations & state laws as well as properly assessing/vetting both the borrower and the property.

Purchase price: $242,500 Cash invested: $49,000 This is an older house, built well on concrete block, that is next door to multi-million dollar houses on the water.

It has a typical unfinished basement with a concrete floor and there shouldn't be any reason to go down there except to do your laundry. 

(I test concrete poured at job sites to ensure it meets required specifications) And as I said in my response to Caleb that job is pretty time intensive so I don’t really see working a second or third job as a possibility if I still want to have time to educate myself and stay rested.

However - if they're there and verified to be inspectors to ensure the unit is compliant, then yes you are obligated to let them do their jobs.

Re-leveling can be done using self-leveling concrete, flooring contractors can do that and it should be quoted. 

The way it was explained to me is that I am responsible for maintaining the roof, exterior walls, concrete floor, parking lot, landscaping, etc.