You'll have to check your agreement to see if the seller can recover attorney's fee as well.

I made it out of this one in 2016 when the market started to recover, but learned valuable lessons.Deal #3 (2011) 1st SFH, primary residence.  

if he is recovering from a stroke it may not be safe for him to live alone.If they do apply either deny because of bad credit or a lack of income or tell them you decided to go with another applicant.

All that does is add to the cost to you, and helps the tenant pay off your mortgage (buy the property for you).3 - Whatever money you pay for, with your money, is money you have to "recover"  (through the cf) before you start making a profit. 

For single tenant net lease that is absolute NNN then yes an owner typically does nothing.For MTNL -multi tenant net lease then even though in many cases absolute NNN with base plus CAM you still gave to look out for CAM caps and large Capex expenses the owner would usually pay upfront and try to recover over time.For instance if you are buying a center looking at roof and parking lot are 2 big ones.

Real estate prices have not recovered fully from the downturn and it is still very much a buyers market. 

How does the previous owner contest the tax sale and how will I be able to recover the money I have invested?

This will cover you legally if they decide to come back to you to try and recover the Security Deposit.

The improvements are added to the basis of the property no matter if it is a rental or personal unit and recovered either via depreciation or via less gain later on. 

The primary objective with this strategy is to recover all (or most) of your cash investment to use on the next deal.