Build Your Own House

Estimate Building Costs on a New Home in Southern California

Summary: Estimate construction costs for building a new home with a great room and vaulted ceilings in Southern California.

This is an attractive 4 bedroom, 2 bath ranch style house plan with a lot of nice features, yet it is only 1,412 sq. ft.
The front porch measures Approx. 27’ x 6’.

This plan as shown is with a full basement, but it can be easily modified for slab construction to save money or to accommodate a high water table.

I estimated the cost to build with a concrete slab foundation, as that is the typical foundation in San Bernardino, California.

Lifestyle Features: great room, suited for view lot, covered rear porch, vaulted ceiling, eating bar, covered front porch, unfinished/future space, split bedrooms & walk-in closet


To estimate cost, I’ll use the cost to build calculator found on my “Getting Started” page. For input data I used “Minimum Standard Quality” for all categories, plus a zero-clearance insulated prefab metal fireplace with brick face, central heating an air conditioning (HVAC), but no garage.

Using this shape for the foundation on the cost estimating software for the San Bernardino, CA area, I came up with $117,112, including a general contractor markup of $13,370.

For a new house of 1,412 square feet of living space, that is an approximate cost of $83 per sq. ft.

This even included allowances for homeowners insurance or builders risk insurance.

You should keep in mind that the cost to build for this example, or any house plan, can vary considerably depending on the quality of materials selected, and on actual bids for labor and material.

Important Notices:

None of the cost estimates found on include the cost of land, land development costs, local government fees, impact fees, etc.

Cost estimates change with time. YOU can update this 2018 estimate to see if it has, as well as experimenting with different building quality inputs that affect the cost to build.

Keep in mind that these estimates are approximate and are just a guide. Until you actually start getting your own bids and estimates and entering them into your own spreadsheet (see my spreadsheet page for FREE spreadsheets), they will remain approximate.

Good luck, Carl Heldmann