Home Office Deduction - What if you have yet to buy a property?

[Ernesto Hernandez]

I’ve poked around online and used the search function and couldn’t come to a definitive conclusion. 

As it stands I have one property in my name that technically is a rental. I live 2.5 hours away and my mom cuts me a check every month. I rent with my girlfriend and we are moving into a 2 bedroom next month. I do a lot of reading, webinars, phone calls, group calls etc. as I prep for my next purchase and plan on using the spare room exclusively as my home office with my desk and office equipment.

With the one property that I already have would I run into any deduction issues? Or should I play it safe and not consider it until I a property not in any way tied to a relative of mine?

Thanks in advance.