Re: 400 amp service
The world of commercial electrical requires full take-offs; there is no standard unit price to value items in this world because of the infinite variables.
I recommend you do a complete take-off of material and man-hours then get local quote prices for your material. Estimating software does not give accurate local pricing it only gives "around values" an estimator always has the burden of adjusting the values to match reality.
After you do a take-off and adjust your material costs you simply study the application to qualify the hours.
This project would guest-i-mate from $4,500.00-$5,800.00.