This is assuming there is no personal use of the daylight basement, and it is 100% business use as an STR. 

@Tim Callahan, you may be able to add this to your lease in the future.

This way, you would have two income sources offsetting most, or all, of your mortgage payment.

This will create some more movement, has been holding up quite a bit of growth.

While this is a good question, the answer is absolutely location specific.  

i hear this a lot, about Disney area, and gatlinburg too.

For instance, I've reached out to cost segregation companies in San Diego that will base land vs building value on whatever split the tax assessors report shows which many times can be around a 50/50 split. 

This is a very nice place that brings 15K-20K a month in the summer.  

Here is a detailed look into this issue:https://www.biggerpockets.com/forums/51-tax-legal-issues-con...

There are pros and cons to using DPA with your average conv/fha loans ( yes this is how you arrive at 0% down or 100% CLTV or combined loan to value financing).Conv and FHA lend up to 95-97% so that remaining 3-5% down is covered or partly covered by the remaining local DPA programs.