Your plan has to be flexible.Tract houses built in 50s, 60s and 70s exposed to midwest weather don't age well.

Normally resealing is only discussed for asphalt.All depends on if your cold weather and use lots of salt.  

How would you think about the risks of buying a park in a tornado prone area?  What about a 100 year or 500 year flood zone near a river? What does the worst case scenario look like for the park owner and how do you q...

Welcome to a cold weather state. 

I have done others that is was no issue.. but again we are well cashed up so we can weather any storm in this regard frankly.good luck and let us know who it works out.

Ive developed similar type units in the north east and just the building weather tight with all the upgrade options on the buildings (over hangs, better insulation etc) is still around $50-55 sqft through a very reputable steel building company (they spec and buy the building from the factory and build it). 

In my past life, I was involved with a number of these in the Southeast and the benefit is that they go up in a few days so are not open to the weather (rain for us...snow for you) and can be move-in ready in under 6 months. 

If you are spending the money, do not cut corners and end up with inadequate heating efficiency in your worst cold weather.

They are also often located in areas that experience weather extremes that cause high maintenance costs and utility bills. 

We've hit some road bumps along the way with major weather issues and a new $9,000 water filtration system.