Splitting lots in Roseville (Placer County)

Hi Everyone! We're evaluating a deal in Roseville which comes with a double lot (11,000+ sq ft), each end of the lot on a different street.  Does anyone have experience working with the city of Roseville to split lots or change zoning (potentially to multi-family)?  How difficult is the process and how long does it take?  

Any advice would be greatly appreciated!!