Construction Costs- what does it cost you to build

[Derek T.]

I'm here in the SF Bay Area and I've done around 60 projects these past 4 years, flips and holds.  Wondering what it costs you guys to build where you are at.  We usually do our construction without a general contractor and just GC it ourselves.   Here are some costs for labor that we've developed.  

Labor only:

Retrofit a window- $80

Install new window- $100

Framing- $11/sqft

Concrete slab- $6/sqft (include material)