Here some actual data from my own SIP build. I'll try to list "everything" that was included, keeping mind that there probably is some overhead associated with engineering stamps (liability) and design work (taking architectual drawings and turning them into SIP schematics).
First floor = 28' x 61' (3 sides)
*10' walls (6.5" thick)
*(1) Insulated header about 15' long
Attached garage = 28' x 20' (4 sides)
*10' walls (4.5" thick)
*(1) Insulated header over car door entry (16' long)
Second floor = 28' x 81' long
*8' walls (6.5" thick)
*(4) insulated headers 4' long
*(1) insulated header 15' long

Kind of got cut off, anyway.

Roof specs.
*Hip/gable design
*6/12 pitch
*8.5" thick

*Ancillaries
-Delivery
-Engineering access and design
-All screws, washers, foam, guns, hot knife, plans, top plates, etc.
-All windows pre-cut out

Total package = $39k delivered

Anything I am forgetting?

Curious to know where you purchased your Sips from and where was the build?

I purchased the SIPs from PorterSIPs based in Holland, MI. The build was in the Southwest lower Michigan area. I chose them because they seemed the most professional and I was able to tour their facilities and talk to a few different people. They did not disappoint.

Chris,
The 8" steel panel you quoted. For a 25' simple span gable roof, 29' overall:

The panel can span wall to ridge without intermediates (40/15/L-360)?
Can be lifted by 4 men with basic jobsite equipment (no crane or telescopic fork truck)?
Is a weather tight roof for at least 6 months before roofing is applied?
Requires no interior fire barrier?

FOB at $4.20?

GuyB;

not @ L/360, you would need to go to a 12" and could accomplish L/240 with 55# total load, which is adequate for a roof.

4 men could handle, I am currently setting 21'-3" x 6" thick with 2 men, roof would be weather tight for 10 years with 2" eternabond roof tape at joints, then re-tape could be necessary.
If used for living area you would need 15 min. thermal barrier (not fire barrier)

Chris,

Are you saying the metal SIPs will need 1/2" sheetrock for a thermal barrier?

Rich Melius

Rich;that is correct

Chris,
Thanks for the reply. I assume that a 12" panel is more than 1.5x cost of an 8" panel? What factor would put me in the ball park?

4x29 section of roof using i-joists, 0.75 zip panels, spray foam, labor, etc... is approx $  7.65 sq/ft all in. Excluding the ridge. Since both systems will require a ridge.

12" Steel Sip at $6.25 sq ft (delivered) would be cost neutral with following caveats:

1) local codes require sleeper and 1/2" osb cold roof (installed cost $1.25 sq f)t. 2) Cost excludes tape, fasteners and sheet metal required for Sip installation. 3) Cost of installing SIP roof panels excluded. Since this will be a training wheels job. 

What kind of production rates do you get from an experienced crew installing panels on a simple gable roof?

GuyB;

12" panels are $5.35  plus tax plus freight , freight is about 2.65 per loaded mile (full truck load)

labor, can probably set 2 - 29ft. panel an hour

I am new to the forum, and am trying to understand the approx sq ft costs of an R40 SIP for a house we will shortly build in southern Utah. I have seen about 3.60 per sq ft FOB on the web, is that realistic?

Thanks
Nick