Residential construction costs can vary from state to state so the numbers below may not apply to your location, especially in Northern California. The Monterey Peninsula definitely falls outside these numbers. Contributing factors for higher costs include availability of workers, scarcity of local materials and building requirements that add time and money to a project.
Here are the 2019 National Results for Single Family Cost Breakdown for New Construction based on Average Lot Size: 22,094 and Average Finished Area: 2594.
Framing/Trusses/Sheathing etc $51,589
Exterior Finishes $41,690
Interior trim, doors $10,605
Plumbing fixtures $4,108
Source: Realtor Magazine. Breaking Down the Cost of Buiding a Home, February 12,2020