You might make a reasonable argument, if you were going to issue currency based on standard, that that standard should be a resource that can be depleted and/or renewed, such that the circulation of fiat at any time was dependent upon the health of that resource. 

Unfortunately he developed health problems a few years later and we were able to buy for a fair price. 

Jason, it is an alcove studio in Battery Park City (so a doorman building) and while there have been minor repairs (replacing broken appliances, spot repairs to the parquet floors), as far as I can tell the floor, bath and kitchen are all 80s originals beyond those small updates.  

Open windows let in road dirt, dust and allergens that settle in your home and never leave and in doing so, promote health problems that go improperly treated for years.

Or is there always a battery component to it? 

Depending on the system, (and what you're willing to pay for) they may even dig into the drain field to see if it is saturated.The county health department will have records on the locations, sizes, and capacities of the tanks, diversion box,  and drain fields, including an area delineated as a replacement drain field(s). 

I am not a property investor, but have friends who are, and they have told me stories of ruptures within their families because of inter-family rentals gone wrong.Adding to the mix is the fact that my mother, the owner of the property, is elderly and in poor health.

As we plan for financial independence, and calculating our target financial goal, one big (unkown) piece of the puzzle is health insurance costs.

  #4 You can try to approach any nearby ALF or rehabilitation or mental health company and ask if they are willing to expand their portfolio and you can lease it to them for 2 or 5 years (usually 1.5 or 2 or 2.5 times standard rent).

Podcasts I have on cycle:BiggerPockets (Real Estate)Best Real Estate Investment Advice Ever w/Joe Fairless (Real Estate)BiggerPockets Money (Personal Finance)ChooseFI (Personal Finance)Mad Fientist (Personal Finance)The Side Hustle Show (Entrepreneurship)Fat-Burning Man (Health) Impact Theory by Tom Bilyeu (Personal Development)