Foreign rental property placed in service before 2018 is required to be depreciated over 40 years.
But yes, you "will" be completing a 4562 for the 2020 tax year. I also assume you know what you're doing with the 3115, as that form is not as simple as it may seem. I always recommend professional help for the 3115 becuase it can be (and is) more complex than one may think. Doing it wrong has the high potential of costing you more than it would have for professional help, when the IRS catches up to it.
