ADU Tax help

[Brian Bower]

I Own and live in a SFR with an ADU(auxiliary dwelling unit) in portland or.

the Adu I rent out and have been using a 70/30 breakdown for the valuation of the property for depreciation & tax purposes( based on sq ft.)

this year I replaced the siding on the main house and Adu and painted as well (paid a contractor). 

My question is for the siding bill can I claim the whole expense because it improved the ascetic of the rental, or should I only deduct 30% to keep consistent with the depreciation %?

Thanks!