There's also a whole chapter covering this subject in Stephen Fishman's "Every Landlord's Tax Deduction Guide," Chapter 6, segmented depreciation.
I felt the same exact way as you until someone had a deep discussion with me. First of all, the cost separation process, which would normally be done over hours of painstaking research, can be done in less than five minutes if you use fair market values for figures and you use the REMOVED BY ADMINISTRATOR website. You can print out a 4562 and depreciation report for free and give it to your tax person. This is more simple than anyone could ask for.
So first of all, residential rental owners don't know that they have the opportunity to partake in accelerated depreciation through asset separation, or they think it costs more than it saves. Since the website is free, that takes away that disadvantage, so bottom line, accelerated depreciation is available to those that want to take advantage of it.
The next issue is depreciation recapture. You pay capital gains at 15% but will have to recapture Depreciation deducted at 25%. Some people frown upon this, but for me, its not even an issue.
Have you ever heard the saying "a dollar is worth more now than it will be in ten years?" Well lets talk real figures. Say I own 5 residential rentals, each having $20k in five year assets. By using segmented depreciation, my deduction will increase by $20k a year for the first five years. ($20k 5-year asset = $4k deduction per year, times 5 houses = $20k deduction a year for the first five years, separate from property depreciation altogether)
This process will save me a couple thousand dollars at least, and will probably be the deciding factor in whether or not I can afford to purchase another investment property.
More cash flow now is more important than paying taxes later, all real estate professionals know this. Besides, if you do a 1031, you can avoid paying on the depreciation re-capture altogether.
Is this making sense? The advantage really depends on your specific circumstance. I can give more examples if you'd like....
Andrew Bitler