I purchased 3 units in the downtown Oak Lawn area to learn what I can from about the management side of things.

The Phoenix market is pretty hot right now, so many of the rehabbers I've spoken to about this are paying much closer to 80%.

They are two buildings side by side and are mirror images of one another.  

Not furnace, but hot water boiler.  

It is a very small duplex, with one unit on each side.

Though you are looking to get into the residential side, I'd be interested in leveraging some of your commercial experience.

With SFR thru 4 units, if an agent has the deal, it's only a handful of very well connected agents whom can sell something as a pocket listing so the MLS is usually the way (unless it's a super hot market).I just started with direct mail for my personal investments in NJ so don't have enough insight yet to comment on that.

Is it hot.  

Other areas in north side like Avondale, Logan Sq, Irving park, North center are expensive right now but deals can be found still...You might have better luck looking into Albany park, Portage park, Jefferson park, North park etc...You should look into FHA program with 3.5% down.

Samuel I invest on the east side of Cincinnati, OH.