Depreciation value for rental in owner occupied 2 family

[Stacey Schwartz]

I'm new to this. Bought 1st home as a 2 family fixer upper last year. Taxes are in progress but I am stumped on factoring depreciation value on the rental property. How is the depreciated value calculated for an owner occupied 2 family home? Is the depreciation value claimed on the rental property calculated against half of the total cost basis? The rental property is roughly 50% of the living area in the 2 family home.