That information has likely been gleaned from the public records which themselves are also not up-to-the-minute.Just to add to the items @Andrew Holmes listed, follow bankruptcies, also.

Before kids I had a bunch of time and could take the time to search for the best deal on a $5 item, or jump through hoops to stack coupons, etc. 

My wife made it a beautiful home, added a hot tub, updated the HVAC, repaired the boathouse, remodeled the Master bathroom & several other items like emergency generator connection.

Therefore, I would pay more for that than a well-run property with some expensive repair items that need to be done. 

I have a realestate book that gives the line items to consider.

You just have to be able to make those payments if a vacancy or high maintenance item occurs.

There is a plethora of items under each topic that you must know before you jump in.1.

Use tag sale items, free items on the side of the road, craigs list free items and unused family peices in storage.

Can anyone point out all the items they left out to complete the business circle?

You'll need to see how old the following items/systems are ... roof, AC (condensor, evaporator coil, and furnace), electrical box, and plumbing (esp. the sewer line).