Depreciation Airbnb and primary residence

[Fuad Gilede]

Hi everyone, 

Not sure if anyone has talked about this before, but I recently started renting my garage as an airbnb (I live in the main house), and I'm curious to know if I'm aloud to depreciate the portion of the house that is used as a rental (airbnb). Is that even possible? If so, what would the basis be for depreciation ? Is cost segregation a good candidate for this?.I would welcome any nuances on this subject.
Thanks!