Have a number in place where the potential sellers can call you such as google voice or ring central 

Foreclosed properties are going to have a bank as a seller.

If you discovered something, bring it up to the seller and ask for a credit/price reduction. 

Once you get going and start making some money, it's a good way to find even more motivated sellers, but you should get a lot of calls just from the signs.

This is simple and is permitted by right.Sometimes a city will require that the current titleholder make this request, so you may have to get the other seller to sign.Also, make your purchase offer contingent on approval of the multi-family use.

It's very tempting to add some more money now to buy overly discounted notes from panicked sellers.

The seller is willing to walk away with $1,000 net, and I'm pretty confident I can sell the lot for ~$30,000 -- So it's a pretty solid deal so far.

Offer say 30% less than as-is value - which works best with highly motivated Sellers.2.

"But what about things like insurance, garbage, water/sewer"Ask the seller for copies of the most recent bills for these.

This is the buyers approval that I often require when selling a property to a buyer in a strong sellers market.Now lets say that you have a specific auction or property in mind,  and you have the TBD approval.