Call your local Building Department and ask.

Requires Oregon Department of Administrative Services to publish maximum annual rent increase percentage. 

The majority are saying the same that @Brian Ploszay shared about it really not being that bad if it's capped 7% and CPI adjusted.

I'm sure the vast majority make their money at closing.

Underwrite how you want, but I can tell you the VAST majority of sophisticated and successful MHP owners do not underwrite rental income to the parks NOI; it usually significantly inflates the value of the asset.

Just remember 2 things if you don’t remember anything else: ensure you manage the cash flow properly so “when” something major happens you won’t sweat it and 2nd don’t be afraid to think and of the work.

the major down fall is under capitalized buyers getting into the deals and really screwing the sellers. that's the major down side. 

We have been mostly happy, although our units are very basic and the work being done was not major rehab.

That describes the majority of residential lenders, investor financing is a niche unto itself. 

Thankfully my job only requires I be physically in the office infrequently, so I could owner-occupy for a year  in "nearby" areas (Modesto, Stockton, Sacramento, etc)... but it is still a major course correction.