So, it might be great for income, but I also wonder how deep the downside is if things don't go well. 

This is a deep deep question not easily answered.

If you're interested in a deep dive our property management team would be happy to take a look, just submit a form on the site or DM me.

But often times needs either deep cleaned or removed short term.

All on same job, about $15K unexpected.when your scouting your NPN  be careful in areas in the deep south with Yazoo clay those houses can be broke in half like humpty dumpty.. we also narrowly escaped a house that had a sink hole in orlando  LOL

A well is all dependent on how deep they need to go and how far from the house they need to lay the lines. as you can imagine, further down and further from the house and prices go up accordingly. 

Hey Emilie, I can provide you some of the tools I use for market data research that you can utilize.https://datausa.io/https://www.census.gov/quickfa... https://www.huduser.gov/portal...I'd recommend if you truly want to dive deep, use huds.

@Robb Silverstein you're going to need to pick a market or waste a lot of time looking at properties you don't understand.You might want to follow the "Deep Dive" series we're doing on our BiggerPockets blog about Metro Detroit cities, City of Detroit Neighborhoods and comparing Metro Detroit to other hotspots investors usually consider:https://www.biggerpockets.com/...

Trout and salmon are exclusive to fresh water, so I don't need to fish in deep open ocean waters.

When you add in additional factors like deep snow drifts around the outdoor unit, the problems begin to compound.A better solution for you may be to go with gas fired "combi" boilers, one for each apartment as you renovate.