Year end rental expenses; purchase now or later?

[Mark Stone]

My back tenant will be moving out in the next 2-3 months. I have a lot of repairs I will need to do in his unit. Would it be advisable or legal to purchase the material now before the end of the year so that I can write it off for my 2016 taxes, as opposed to waiting an entire year until 2017 taxes?

I am looking to spend roughly $3-5k on everything from tile, fans, blinds, door locks, kitchen cabinets, oven, fridge etc.

Thanks for your advice!