My fiancé is an interior designer and her friend from Las Vegas just bought an STR they hired her to furnish this summer.

I'm running into hangups with code section R302.3.1 which seemingly requires not only the floor separating the units to be fire rated but all the walls below supporting that floor to be fire rated (ie all exterior walls and load bearing interior walls on the first floor), which may mean extremely expensive fire rated windows at the lower unit.  

Also, air conditioning removes moisture/humidity from the interior airspace, and nearly every home in the Carolinas runs AC during the warm months.Crawlspaces tend to be where the majority of problems occur.

I am building a home that has toungue and groove interior walls and ceilings. 

I was told that if I were going to live in the unit I should only get interior insurance.

I'm a single family homebuilder/developer and I feel it's going to get very expensive once you pay power/water for the additional meters and then do the interior renovations to separate everything. 

These updates included modernizing the interior, enhancing curb appeal, and addressing key areas to make the home more attractive to buyers.

Our improvements included updating the interior finishes, improving the landscaping, and ensuring the home was move-in ready.

So if you build a manufactured house and upgrade everything to 2 x 6 exterior, 16" on center, 2 x 4 interior 2x8 subflooringupgraded to Wind Zone III, trailer hitch wheels removed and set as a permanent structure on n a permanent concrete foundation.

My GC said we only needed a permit for the roof but when I submitted the paperwork for my first draw the lender asked me for permits for the HVAC and the interior work that is being done which is significant.