I "L" shaped building (single story with a crawl space - no basement) has 4 bedrooms 2 baths and rents for 800/mo.

So, I'm wondering if anyone has any experience with the business.For example, How much space does your facility have?

The layout lends itself to dividing the space in one or both to 2 bed 1 bath units and still be decent sized.

Note also that this extends to the roof, so any attic spaces also need to be rated.Here, there are some other requirements (read: expenses) if you're making a legal 3rd unit, but I don't know your city codes there.

Have you considered trying to find tenants that would use more space?  

I'm just a few months ahead of you in terms of wholesaling and I'm in the Northern and Central NJ space for now.

The park has space to expand to 2 more spaces, but I have to check with the county to see if the existing septic will suffice.

There are tons of helpful users on here and a wealth of information to glean from other users.Commercial and residential can be quite different due to the nature of who wants your space.

That's true for poker, for stocks, and true for REI. 

I would use it in a family type room (like a basement living space) or guest bedrooms.