If I do a cost segregation study for the purposes of taking advantage of Bonus Depreciation (I am considering some of the algorithm-based DIY services) anything placed in the <20yr category and depreciated 100% is subtracted from my depreciable (27.5 year) basis.

Computer algorithms are not perfect and can sometimes be wildly off, just like Zillow estimates.

Also since ppl are flying in, you have to have a somewhat flexible schedule in case their flight is delayed significantly, etc.If you get the professional airbnb photos you will get more people interested (probably has more to do with the airbnb algorithms than the professional photos).Airbnb used to not do any screening of tenants but now they require a photo ID, etc.

The paid version will show you the actual comps they're using, as well as performance on each of those so you can see if the algorithm is skewed with some ridiculous performing one that isn't comparable to the one you're considering purchasing. 

A lot of these houses seem to be claiming under 40% annual occupancy or wildly varying prices ($250-300 off peak, $1200-1500 peak based on algorithmic pricing).

It could be a coincidence but it seems too perfect to say the algorithm did this by accident. 

Zillow claims to have made improvements in their algorithm, but take that with a grain of salt.

Stock market computer trading algorithms and governments can only buy us so much time.

I would not recommend you buy in a rough neighborhood from out of state based on an MLS algorithm instead of using a realtor familiar with the area.

The Rent Zestimate is pulled from public property data and similar local properties listed for rent; there may be special features, location, and market conditions our algorithms have not taken into account.