Lisa O'Bryan, Agent, Salt Lake, UT. Do your research, talk with builders in your local area, dont forget to add the cost of the land into the equation. Just a ball park figure would be $70-$80 per sq. foot it depends on a lot of different factors, land price, size of home, upgrade's, details, floor plan, layout etc..Check out the link below good article:ust a ball park figure would be $70-$80 per sq. foot it depends on a lot of different factors, land price, size of home, upgrade's, details, floor plan, layout etc.. Check out the link below good article: