One of the main things I liked best about the heritage steel homes was the open floor plan. You can build any shape/size room you want anywhere or leave an entire space open without having to worry about what that does to your structure and how to support it. Also if you ever decide to remodel you can nock down and rebuild the walls anywhere again without the worry of keeping structural support in the right places. There are alot of possitives to the steel homes for us but they are not for every one. The total cost on the steel home we were going to build was right around $93,000 for 3,000 sqr ft. That included buying the land, having a new water well put in, and hiring out the concrete. If you shop around for materials and dont mind having a preset exterior design steel houses can save you alot of money. My business partner just built a new wood house a little over 4000sqr ft. The basement cost $19,500. Water well $6,500. Septic system $4,800 plus the state requires a $300 dollar inspection fee. Hail resistant shingles w/ 25yr warranty $8,000. The exterior walls(foam board and tyvek wrap only), hang windows and doors, interior support walls, trusses, and roof(decking only), cost about $32,000h(he bought all the materials so there was no mark up from the framer). All the interior walls, stairs, wiring, plumbing, trim, cabinets, and florring he is doing himself. The drywall and hvac system will be hired out. Even though he is doing most of the work his total cost is still going to be over $165,000.