Into what I assume are reasonably esoteric corners of tax code:
My wife & I own a ~2000 sq ft house. Over the summer, I built myself a separate office out of a shed. It's insulated, solar powered, has a computer desk and a workbench, and is 100% for business use - either my day job or my research projects which are lined up with one of my alternate income streams.
I've got... oh, about $15k into the construction, though probably a bit more with some of the improvements I've made. Call it $17k.
What can I do with this, from a tax perspective? I'm familiar with home offices that are part of a home, not an outbuilding constructed specifically for business use.
Pointers and tax code suggestions appreciated! My taxes this year are complex enough that I'm probably going to have a professional do them (multiple states, variety of income, lots of investment sales, etc), but I'd like to get an idea of what I can work with now.