Once again: cost segregation hype
I have written about over-selling of cost segregation before. I will indulge myself one more time.
See, cost segregation is indeed wonderful when it works. The problem is: it does not always work. But when you see it marketed online, including here on Bigger Pockets, the impression you get is that it is pure magic, easily available to all, like on Oprah shows.
Examples are poached from a very prominent tax firm specializing in real estate.
Example A.

Is this a true statement? Yes. But it is an incomplete statement. It is missing an, ahem, minor detail: most cost segregation losses are blocked by PAL (passive activity limitation) rules. You need to qualify for one of the two exceptions: either operate STRs (short-term rentals) or meet the REPS (real estate professional status) requirements. Many investors do not qualify for either.
Example B.

Again, kind of a true statement. Again, missing critical details. Such as this one: the tax savings are not permanent. They are temporary, as in a loan. You have to return these tax savings when you sell the property without a 1031 exchange.
Another missing part: the savings are for one year only. After that, you are back to where you were, unless you buy another property and apply cost segregation to your new one.
I am all FOR cost segregation. I fully support it and recommends it to my clients. WHEN IT IS APPROPRIATE. Which is not always.
Here are some of my older posts on cost segregation:
https://www.biggerpockets.com/forums/51/topics/1075919-five-...
https://www.biggerpockets.com/forums/51/topics/831924-beware...
https://www.biggerpockets.com/forums/51/topics/1136752-expla...
https://www.biggerpockets.com/forums/51/topics/1191846-cauti...
https://www.biggerpockets.com/forums/51/topics/831924-beware...