If you present past deals you have done and lay out the plan for the future you may find someone willing to partner up. 

Other factors such as bedroom size and layout or even the condition of the neighborhood all play a huge factor in the rental value and attractiveness of the home as those are the factors that tenants look and pay for.

If the house is functional as it sits, which it sounds like it is I think your best bet is to keep the layout as is & rent it out.

Obviously, they aren't going to lay out the legal ways to do what they clearly don't want happening. 

Using the FEMA Flood Map is intuitive. 

A first hand understanding of rental rates and values in the market area - either by living in that market or having enough assets in a given market - or by partnering with someone that does - that one “intuitively” knows what the rental rate should be or what they can be brought to.Yes look at the data for sure but develop enough local market knowledge that you know without “googling” it what the rents should be.

For your place, check to make sure water from the roof is still flowing away from the foundation (foundation landscaping is often the guilty party), also look to see if there are any sewer/sump grates with sitting water (clogged sewer drains, failed sump pumps, depending on the house layout).

Will be looking to do some BRRR's and rehab up to an entire house, potentially add a bedroom if layout allows. 

How many sites are determined by how flat the layout is.Insurance costs for liability ??? 

I haven't found any that really worked as cash-flowing rental or something was weird with the layout, etc.