Build primary residence and using section for STR

[Carl Cheung]

Hi, wanted to see if anyone has done this and what I have/haven't thought of yet. I'm in a HCOL (Seattle) area and looking to build my "final" home.

I was thinking of building a home and have part of the walk out basement used for STR. I'm hoping this would help offset my mortgage/buildout since it's in a central location and likely easy to rent out.

Would I be able to depreciate some of the buildout of the basement since it'll be for STR? If so, it would also be easier to self manage and so I can use it to offset my active w2 income instead of going for REPS status.

Appreciate any insight, thanks!