My rentals in BC require we pay interest on deposits, but they also have a calculator that will tell you how much as the rates change each year. 

Since your last residency was in 2020, you do not meet this requirement, so the exclusion likely won’t apply.You'll need to calculate the capital gains based on the difference between the sale price and your adjusted cost basis (original purchase price plus improvements and less depreciation taken).

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

I'll give you the short answer.If you invest $175,000 to purchase a $750,000 house and you'll earn appreciation on the full $750,000 and not just the $175,000 you put in.Do a search for "real estate vs stock market calculator" on your favorite search engine and you'll find examples like this: https://businesscaseguy.com/should-i-invest-in-real-estate-o...

I also compare with Rabbu numbers and use their STR calculator to run numbers.

Would that exclude it from the DTI calculation?

Looking to purchase one and struggling with the right calculators to determine the real metrics.

The cost segregation will analyze the property to find assets that can be depreciated faster than 27.5 years.The accountant you work with will be able to help connect you with a cost segregation specialist.The most difficult part is completing form 3115 which will also calculate the 481(A) adjustment.The 481(A) adjustment is the difference between the correct depreciation calculation less the actual depreciation taken.

However, I would like to know if I could pay someone to review my worksheets I create to complete the form and the depreciation calculations as well.  

I have no idea what it is or how it's actually calculated.