Taxes: Be aware of potential transfer or capital gains taxes, depending on your state.4.

The right strategy for you is going to depend on a few things, like your risk tolerance and how much cash flow you need to hit your goals.

Hey Allen, it all depends on your goals.

@Jared Smith it depends is pretty spot on!!!  

Do you typically replace existing boiler systems with forced air or does it depend on the circumstances?

Depending on area, coverage needs I have seen varying carriers best fit the policy needed.

So your answer depends on lien priority, and you are advised to learn which liens rank higher and lower in priority (and why); that is beyond what I intended  to post here.The prothonotary should have some way to indicate a lien’s status - whether it is open or satisfied or discharged.

Neighborhoods to invest in is a more subjective topic as that is often dependent on the type of investment you're interested in, your price point and even the type of tenants, if that's the route your going,  that you are trying to attract.

Leverage / down payment required will depend on if you're a U.S. citizen, Green card holder or if you have another immigration status. 

Sometimes you dont have much of a middle ground depending on the demographics.