Investors & landlords

My spouse and I were joint owners of our rental house here in Iowa.  In the publication 551 example it appears that my basis on her date of death would be:  My half of the interest in the house, plus her half of the FMV, minus 1/2 of the depreciation before her death.

 

To enter the new basis in Turbotax do I take the original house asset out of service and enter a new house asset starting with the date of death with the new calculated basis value or is a new house asset created with the 1/2 of FMV from her and keeping the old asset?  What is done with improvements such as the new roof and driveway?