And don't forget, home to irregular workplace is deductible if you have a qualifying office in the home.  

I used to refer occasionally to an illustration in Pub 17 that showed how this works (keeping in mind that it was always based on facts and circumstances of each case).  It's probably not there anymore, but check out Page 186 in the 2017 edition:

https://www.irs.gov/pub/irs-prior/p17--2017.pdf