I think it depends on your state. 

some gurus teach this method.. thats all this is.. seller is going to have to pay inputed interest to the IRS though.. to me it would depend on down payment..

That highly depends on your pay structure.

We will never have the right answer; everything depends on your circumstances.

With 3 properties already, you're definitely not "new" anymore ;-) Doing a refi is very possible (depending on how much equity you've accumulated) to do those types of things...the issue can be the tax ramification that you face if/when you do it.

@Adriana V Alvarado a "good deal" in the BA really depends more on your timeline and long term strategy.

But strictly going by the numbers, it's borderline OK, depending on the type of market.

Main questions should ask about the seller's:- Reasons/Motivations for wanting to sell- Desired timeline to close- Plan's after selling (relocation, reinvesting proceeds, 1031 exchange, etc)- Back-up plan in case they are unable to sell within the desired timeline- Reasons for not already selling to/with a investor or RealtorAdditional questions will depend on the type of seller lead i.e. pre-foreclosure, probate, fsbo, absentee owner, etc.Here is an example of a youtube search you can use to begin finding call recordings.There are 1,000s and you'll find that the best/most effective ones don't even sound like sales calls.

Hey @Sol Baum - real estate broker here. 

It really depends on how many units you manage, where you are listing them, and what features you need/want.