Investors & landlords

Thanks for the inquiry, Connie, as I am in the same boat since losing my husband on 12/31/2018.  This is my first tax filing as a widow due to his death being the last day of the year.  I have to step up the cost basis on my 2 rentals and am wondering how too do this exactly.  Turbo Tax wants a date placed into service, cost, land, prior depreciation, etc.....would my date be 1/1/2019 or the day after his death?  How do I know which assets to add to start depreciation over again?