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I could go into details but honestly you'll get the greatest picture by using Zillow, Keller Williams, or any other app to see.  

I don't see a reason to remove the new supports in the crawl space in the future and based on your picture, I don't think you would need to remove them to put in new floors.

I don’t think Airbnb natively supports these like Zillow does but wondering if anyone includes a link or QR code in their pictures or listing that links to a video or a 3D virtual tour??

Realistically speaking, except in very rare cases, I think it’s all about pictures pictures picturesMost people aren’t gonna have success  starting their own booking website or running targeted ads or creating some amazing Instagram account.

But if you did the property up right with killer design and great amenities -- I'm picturing cool wallpaper, a game room, boho/modern furniture and a hot tub -- I can see a place here doing well as an affordable Airbnb/STR option just 10 minutes to downtown Denver.

I would check out airdna pay for a monthly sub for a bit, it really helps paint a picture of the health of a market. 

They focus on the bigger picture.

Take pictures and take notes. 

I just rented to someone with a prior eviction on their record Their story lines up with the paperwork I have available (it was more of a dispute with an HOA nosey Nancy, and their former roommate, than a tenant violation of terms - settled on agreement instead of a full eviction, and the problem roommate is no longer in the picture).