Possibly a doll house in my market although Barbie likely wouldn't be interested. 

Yes in Mexico you can.

You're in Cleveland OH.
You need to pose this Q to a local CONTRACTOR.

Anything is Possible, just not in CA when it comes to $80/sqft.

Ask a contractor in your area...A

Highly doubtful.  Materials, labor, land and permits will cost you a small fortune.

Here in Charlotte, 5 years ago, that wasn't possible! It all depends upon the cost of supplies and labor in your area.

I am sure there is a brownfield somewhere that could be purchased for next to nothing. Materials could be stolen from other homes in progress. With the crackdown in illegal residents, your labor costs are probably going to be the tough variable in this equation.

Probably depends where you are located. Are you including the investment in the land in your estimate?

Depends on where and by whom.

Not in my area.

If there were no government regulations maybe!

Not in my area but I am sure there are areas that it might be possible.

Khash Saghafi it is impossible to build a home for $80 a square foot in Southern California.

   I would have said Wakulla County (south of Tallahassee), but with the State making it almost impossible to get a septic tank permit there, not likely.  The cost to hook-up to central sewer line can hit $10K.

    Other rural counties like Jefferson and Taylor, maybe, because land is cheap.  But finding sub-contractors, and getting materials delivered, will make it tough. 

        Maybe a pre-fab or modular house installed on cheap land.  But again, the delivery cost is a wallet buster.

       Take out the cost of the land, and maybe you could pull it off.

I am almost finished with an $80 per sq ft home but with stone floors, granite countertops, modern style wood cabinetsmarble baths and stainless appliances included. It is however in Mexico.

Absolutely, come to Ethiopia

I'm going to go out on a limb here and say YES... if you do much of the work.

Talk to a contractor. Won't work here in SoCal!

Khash Saghafi - it is possible, I am sure you'll find someone doing this.

I suppose it would be, but who would live in it?

No doubt you can... I saw an article about a guy that built his home out of old tires... would I live in it??  Hopefully not... though he had no mortgage payment.

Highly unlikely and definitely not in my market.  That’s a question specific to an area and should be a question directed to a builder or contractor. 

Yes in this area, depending on builder, or if you do some of the work yourself.

Not in the S. F. Bay Area!

It depends on where you plan to build.  It is not doable in my area, San Jose, CA.  Consult with a local contractor/builder and get the numbers you need.

Maybe somewhere.

Not in my market area

Yes

not today in my area.... a stick built home for $80/s.f. dates back to the mid 1990's.... and that's building just to code...code is nothing special!!! it's bare bones....finishes that are bottom of the line boxed cabinets, no finishwork around windows, minimal allowances for flooring, lighting and appliances....apt. type products!!

Probably in some locations.  Not here.

Possibly in some areas if the land is paid for. Depends on utilities and labor costs. Materials are also subject to local costs.

Absolutely even cheaper too as the basics costs from ground to completion are fixed. It is the type of finishes that add-up. 

If you take out the land cost then yes.

Perhaps if you skip plumbing and heating. A recent builder i am working with has about a $200 sf cost

Why would you like to do this?

Not my expertise, and would vary in different parts of the Country.

WEll if yo find scabs that need work but then what is the qualities  of the work and the supplies