Found through lots of online research and connecting with an agent who works with investors.

Are there general rules that apply about this, or is this a lawyer question?

That said, the seasonality of your locale and population who require 1-3 month housing will determine whether the calendar will fill.  

We are looking at multifamily 2-5 units.

These are electric only systems - dont work well in older buildings - but newer construction they should be great.

I would call them first, let them know you are sending it and then send it via email and regular mail. 

Are there other ways to gauge the rental demand??

Hi Sara,We do see a lot of new construction in NC and SC, but specially in NC.If you’re looking at areas with high demand, Charlotte and the Raleigh-Durham region in North Carolina are definitely worth considering.

I tried to estimate what a GC might cost in my calculations, but I have an uncle who does roofing and cousins with window installation and landscaping businesses, so I believe I can save some significant costs through their help and guidance. 

Hello BP,I’m a new investor who purchased a SFR in Illinois.