We do have safety bars in the bathroom but no other equipment.

I get a kick out of some of the adds, they want you to have all your own tools and equipment, truck, IPhone, insurance, contractors license and knowledge but unwilling to pay a fair wage.   

That is good to look at as you can see they health ratio for them personally and their businesses.If the lease does not disclose sales another indicator they are staying is if they just did a big re-image or update or added a lot of new equipment to the inside of the space.

He stores parts and small equipment that he uses in his business.

Sorry to say but you are not equipped to deal with tenants, especially this type.

If the business is not making any money then the value is generally on the equipment etc. for liquidation and that is usually 10 to 25 cents on the dollar.1,500,000 purchase price for a business breaking even is a pipe dream.Generally sellers sell on 3 times profit earnings so the business would need to be throwing off 500k profit a year after expenses.

(Cash, Securities, Artworks, Furs, Sports Equipment, Vehicles, etc.)

There are some minor solar equipment differences, specifically with the inverter, if you intend to add batteries now or laterIf a solar system is properly engineered, snow is a non-issue.

Sometimes they make costly mistakes and even though mistakes will happen, it's best to go into your venture as well-equipped with knowledge as possible.   

@Dustin Verley  In addition to real estate notes I've also worked with these cash flows:Business Notes - no real estate as collateral just FFE  (furniture, fixtures & equipment) and goodwill.Mobile Home Only Notes - mobile home on rented lot so no real estateInvoices - buying accounts receivable at a discount.Cell Tower LeasesLand LeasesCasino or Jackpot payoutsLottery paymentsStructured SettlementsAnnuitiesI haven't personally worked with Auto notes but know several investors doing well in that arena as well.The basic concept with all of these options is similar (purchase a future cash flow at a discount using time value of money calculations or IRR) but the documentation and due diligence will differ.