Large Steel Buildings: 60x80, 60x100 and 40x80 Prices

Once a project passes 3,000 square feet, the questions change. It is no longer about fitting two cars; it is about how many bays can work at once, how tall the doors need to be and how much clear floor you get. These are the largest buildings in our catalog, with their real installed prices, from a 3,500 sq ft workshop to 6,000 sq ft.

Prices of our largest buildings

Starting prices listed on our site in fall 2026. Delivery and installation are included. They are estimates: they vary by location, exclude sales tax and change over time, so treat them as a guide and get a quote for your site.

• 50' x 70' x 20' workshop (3,500 sq ft): from $79,032. Vertical walls with a wainscot accent, an 18' x 18' framed opening, four 10' x 10' framed openings, a walk-in door and two windows. View model
• 40' x 80' x 14' barndominium with two 12' x 80' x 10' lean-tos (3,200 sq ft enclosed): from $80,250. 64 feet of total covered width, a 12' x 14' roll-up door, two 8' x 7' roll-up doors, two windows and a walk-in door. View model
• 60' x 80' x 16' workshop (4,800 sq ft): from $97,910. Vertical wall panels, three 12' x 12' framed openings, a 10' x 10' framed opening and two walk-in doors. View model
• 60' x 100' x 16' workshop (6,000 sq ft): from $131,000. Four 12' x 14' roll-up doors and two 12' x 12' roll-up doors so several bays can work at once, plus a walk-in service door. View model

Per square foot, the 60x80 and the 60x100 land close to each other. The price jump between them comes mostly from the extra 1,200 sq ft and the six roll-up doors of the 60x100.

Which large size fits your use

• 50x70 with 20' walls: the height is the point. It leaves room for lifts, RVs and tall commercial equipment, and the 18' x 18' opening takes large machinery.
• 60x80: 4,800 sq ft of open floor for a contractor shop, fleet parking or farm equipment, with three 12' x 12' openings to drive straight in.
• 60x100: a multi-bay operation. Six roll-up doors let several vehicles or crews work at the same time.
• 40x80 barndominium: a steel shell for living space with workspace under one roof, and two lean-tos that add covered area on both sides. The price is for the shell: slab, site prep, permits and interior finishes are separate.

What to plan before ordering a large building

• Site and foundation: the building is installed on your prepared site. Our guide on preparing your land covers the basics.
• Permits: large buildings almost always need one. We offer free permit research, and every building is engineer-certified for your county's snow and wind loads.
• Roof and walls: buildings 32' wide or more come with vertical roof and walls as standard, which sheds snow better.
• Doors: door size and count drive both price and workflow. Size them for your tallest piece of equipment.
• Insulation: large open spans condense easily; see the insulation guide.

For mid-size options between 1,200 and 2,400 sq ft, compare with the metal building sizes guide and the 40x60 metal building guide.

Get a quote for a large building

Large buildings are always quoted for the specific site. Request a free quote and a design consultant will review size, doors and site with you, or start the design in 3D.