Buying a Tax Sale property from Sheriff in Philadelphia

[Nathan J.]

Hi there, 

I recently bought a tax sale from a Sheriff's sale in Philly (via a wholesaler). I admit i am a novice here but was willing to take the risk since it was a very cheap duplex. I plan to rehab it then rent it out and hold it for 5-10 years. My questions and assumptions are the following:

1. The previous owners have one year to make a claim in court. If they won they would have to purchase at my purchase price plus the cost of any rehab done. At the end of this year nobody can contest it. Is that all right?

2. Any previous unpaid taxes or utility bills against the property are wiped clean at purchase. Is that right?

3. After one year I should be able to get a title company to insure it. Right?

4. What else should i do so that eventually when i want to sell there are no issues. In fact what should i do to prevent issues while I own.

Thank you in advance,