You can then fix this unit and any exterior/common area work.

Curious though, what were the $600 fees for and are they somewhat common?

This applies to any common expense, such as garbage or roof replacement.Another thing to consider is that expenses incurred prior to "in service date" are capitalized.

However, you could make them condominiums with common elements and could even convey partial interest.

In an apartment it is more common for tenants to pay electric only.

Also in NC my costs are ~$4k per year to be actively licensed and pay all dues, MLS fees, etc.My $0.02 is there are a million questions people try to wade through before buying their first deal and it tends to prevent action (not saying that is the case, but it very common for people). 

Also, for being a "General Contractor", a fee of 15% plus or minus 5% is fairly common in my opinion.

Thanks for mentioning the second/vacation home loan I'm sure these are common in places like FL.

Then see if there are enough commonalities, if the chemistry is right, then call the product lines and ask a lot of questions once you have the right details.

This is a common problem that happens with Fix n Flippers -- if it doesn't sell in the anticipated time frame, a great option is to Cash-Out Refi & use those proceeds to move on to your next project.