Hi, all, thanks for the advice. The materials list contains EVERYTHING that is in the design including the two cars in the garage and furniture. Framing, roofing ,siding, trim, cabinets, soapstone counter tops, flooring, fixtures ( stove, sinks,refrigerator, bathtub, toilets), decorative beams inside and out, insulation, windows, deck, all doors (including $3000 garage doors) hinges, door knobs, lighting, switches, outlets, a $15,000 hot tub, $5000 outside grill, fireplace, concrete driveway, sidewalk, some landscaping, drywall, paint + $5000 well, $5000 septic and $25000 HVAC. All for $271,000 not including furniture and cars which we own. We also own the property. So on top of the $271K , i added 20% contingency and another 20% labor/profit for a grand total of around $380K or just under $150.sq ft. some of the items have labor in them so my markup is 40% (in reality) over material cost.
When the time comes I will get 3 home builders to quote the job but I want to be armed with an idea of raw material costs so that I can mange their expectations rather top of the head quotes (eg $700K) to manage my expectations. I'm an engineer and project manager and this is how i think.