I am in the Toledo Ohio area and have always been on the contractor/worker end of things recently have been wanting to take the leap into the other end of the spectrum.

If your unit is more B/C class where you can attract lots of decent hard working entry level to middle class workers then I would focus on improving the units to capture those kinds of tenants and oust the trouble makers you have. 

For example, do you need a permit to swap out windows (lead renovation EPA requirements for the age of home or do you need tempered or fall protection) all the way to a city that has $3,000 permit fees. 

Coastal NC can be a great market, but it’s important to research local regulations on STRs since some areas have restrictions or require permits.

State costs vary, but more or less should be +/- $750-1000 to get obtain your NMLS mortgage license (with courses) and most states permit dual licensing in which brokers can be legally compensated on both sides of a transaction.I'd be very cautious about performing dual capacities in any single transaction for two reasons: 1. 

. :) That's what I do, and it doesn't require any permit, registration, or license from the city.

So it seems strange to suggest otherwise.The issue with mobile home parks is that very few new ones can get permitted these days.

Back house but luckily deemed permited ADU exploded.https://www.yahoo.com/news/beloved-father-fighting-life-icu-...

Quote from @Jonatas Melo: If zoning doesn't permit two units, then I wouldn't operate two units.

That said, I highly recommend checking the box on your buyer agency agreement stating that you do not permit the same agent to represent both buyer and seller.Jayme