Construction cost for Apartments

[Wen Ma]

Hello I own a High Density Zoning land in Placer county, California, currently is used for a child care center.  I have the idea to demo the currently old buildings and build a 12 units apartment ( 3 floors allowed) . I am new to development, any one can help me understand the construction cost for apartment  construction in CA , large Sacramento area?  I am thinking 2 bedroom 2bath so I might be able to minimize tenant turnover?  Thanks to anyone who can share ideas.