He estimates that I can use bonus depreciation to get effectively $900k of depreciation in the first year. 

My current property was bought for a little more than land value at the time, but 14 years later, the same land would cost nearly three times what we paid, and the "free" 4 bedroom 3000 sq ft home is still a bonus, even though it could still use some more "fixing up".

But I think it could be an added bonus to let tenants know that the windows are brand new. 

If you are good at it, you'll have no shortage of business.The real bonus is sales!

I would much rather have them put a bonus structure in place where I would pay them less in property management fees (say 7% to 8%) and then give a bonus on top of that if they collect my rents on time.

The idea is to pull out all your money, any in excess of that is just a bonus.

It is a 3 bed 4 bath with a bonus room for possibly another bedroom or office.

I am a fan of cash flow with appreciation as a bonus but they have had success in the past making some decent money 

Also, besides the de minimis, there's the new 100% bonus depreciation, allowing another way to expense appliances.

I correct them they are tech centers $75-90/hr development center plus 5 figures annual bonus.