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How cheaply could I have a house built using steel construction and SIP panels?

I live in Greenville, TX - about an hour east of Dallas. I’ve seen estimates for a 40 x 80 (3200 sq feet) steel building (like a barn - support steel, roof and walls) for about $20K. I’d like to use SIP panels and enclose half the building for a house at first 40×40 (1600 sq feet). I’d have about 8 windows and 2 exterior doors in this part. Then I’d add on in the other half as money allowed. I’m hoping to find 2 acres of land for around $20K and finish the whole project for around $60 - 80K. This will be a plain house - plain concrete floors, walls just taped and bedded (no paint or trim). I’d need 3200 sq. ft. of foundation poured, electric, plumbing, septic, SIP panels, plus tubs, sinks, toilets, etc. I know this is impossible to nail down - but best guesses will be appreciated. Any advise you have will be welcome. Thanks

Answer:

If you can get building for $20K and land for $20k you could do it. You would have to go very cheap on the doors, windows. cabinets, kitchen appliances. and such. Foundation alone is going to cost $12,000. So basically I believe you could “frame” in the structure you are talking about for $60 to $65K. That leaves you 15K for everything you need inside.