For the railing height, I'd find a local carpenter to ask about completely removing the railing and balusters and doweling in an additional length on them.

We are now building our portfolio through flipping, BRRRR's, and additional STR's until we reach our end goal of unique stays in the form of luxury treehouse STR's on secluded riverside locales. 

I have a local property manager that is co-host on the AirBnb listing that will continue to manage the property.

I'm finding that some of our inquiries are from locals who are for one reason or another seeking month to month leases.

Then from there you can call local PM's to get a better feel for market rents to verify your assumption for further due diligence 

Our current renter is likely to be renting for 4 years as she has kids at local school and 4 years would see them through to going to college.We have an old detached 1.5 garage that has functional automatic garage door, and just fits their car....not that they do it very often as I think it is a challenge. 

Others have said they'd only care if the appraiser pointed it out and that I should reach out to some local appraisers to see what they look into. 

Did do the deprecation thing at least last 2 years though  Wife and I FEEL we need to sell in order to use the equity for a down payment in order to stay local.

There is more to this, but another thing I would encourage u do is ask some others for a local attorney that they trust.

I can't see any local investors continuing on with the new laws.