50x80 Metal Buildings

Looking for a cost-effective, maintenance-free building solution that’s built to last? Bolt-up 50x80 steel frame buildings are made from American steel and are engineered to meet your local building codes. All building kits are manufactured to your specifications and can be customized for your intended application.

Start your project, request quotes from four suppliers.

Base model Building Kit
Base model 50x80 Building Kit
BuildingsGuide ©
Made in USA
Steel I-Beam
30 Yr Warranty
Custom Engineered

Building Kit Features

Our 50' x 80' steel building kits are ideal for those looking for a basic structure. The kit comes with pre-drilled primary steel I-beam framing and secondary framing, pre-painted PBR metal wall and roof panels, and all the necessary fasteners and sealants. You then customize this kit building to suit your intended application by adding framed openings for doors and windows - sized and positioned to your specifications.

  • Features

    Primary Kit Features:

    American-made, I-Beam steel framing, custom-engineered in factories across North America.

    • Customizable to suit any application
    • Designed to meet your local building codes
    • Certified to 160 mph wind & 110 (psf) snow load
    • Precision engineering for a weathertight structure
    • Red-oxide primer baked onto all components
    • Low maintenance, with 30+ year warranties
    • 100% usable, column-free space
    • Easily expanded for future growth *
    • Fast construction times

    * if future expansion is a possible requirement, be sure to specify 'expandable end walls' when placing your order.

    Pre-engineered steel framing
    Steel framing for a 50 x 80 building
  • What's included

    Included in the Kit:

    • 1:12 roof pitch (2:12-6:12 available)
    • Tapered steel I-Beams (primary framing)
    • All roof purlins & wall girts (secondary framing)
    • Two framed door openings (add extra if required)
    • Engineer stamped erection & anchor bolt plans
    • Pre-painted 26-gauge metal roof & wall panels *
    • All nuts, bolts, clips and fasteners
    • Detailed construction manual
    • Pre-drilled, numbered parts
    • Complete trim package
    • Sealants & flashing
    • Structural warranty (30-50 yrs)*
    • Paint warranty (30-40yrs)*

    *Vary by supplier

    50 x 80 prefab building

    BuildingsGuide ©
  • Specifications

    Kit Specs:

    • Wind load: 70-160 mph
    • Ground snow load: 10-110 (psf)
    • Available roof pitches: 1/2, 1, 2, 3, 4, 5 and 6:12
    • Roof styles: Gable, single slope, lean-to (LT)
    • Standard bay spacing: 20', 25' and 30'
    • Standard widths: 30' to 200' (clear span)
    • Standard heights: 10' to 40' (eave height)
    • Primary frame: I-beams (min.yield 42k psi) *
    • Second frame: purlins/girts (min.yield 55k psi) *
    • Wall & roof panels: 24 or 26 gauge metal panels

    * vary by supplier

    Engineering CAD drawing for a 50 x 80 building
    Engineering CAD drawing
  • Exclusions

    Items not Included:

    • Delivery
    • Foundation
    • Construction
    • Insulation
    • Additional doors and windows
    • Gutters and downspouts
    • Interior finishing

    Concrete slab pouring

We've Simplified the Buying Process

Let us help you find the best supplier for your construction project. We've partnered with leading steel building manufacturers and distributors throughout the United States and Canada. Quoting companies know they are competing for your business and are motivated to provide you with the best service and price. Here's how our service works:

Why BuildingsGuide? Compare costs for PEMB construction projects in the USA and Canada

The Construction Process

Red iron building - build process
Read the Build Process Guide

Customization Options

You can personalize a building's appearance to match your existing structures or compliment your corporate identity by mixing and matching color options, adding any number and style of doors and windows. Detailed below are some of the more popular customization options.

Color Options
Different colors of siding, roofing, and wainscot can create a unique look for your building. To see the colors that are available, and for color scheme ideas, visit our color choices page.

Learn more

Door Options
There are many different types of doors that can be used to access your building, depending on your needs. You can choose from overhead doors, sliding doors, and more.

Learn more

Siding Options
There are many different styles of siding available, from traditional to modern. Choose from metal siding, Hardie plank, stucco and more.

Learn more

Structural Options
Adding structural features to a 50 x 80 steel building can increase its functionality. These add-ons can include a mezzanine level, a lean-to, roof overhangs, porches, and more.

Learn more

Why BuildingsGuide?

BuildingsGuide makes finding reputable manufacturers of prefab buildings in America & Canada quick and easy so that you can choose the best vendor for your needs and budget.


Since 2004, over 200,000 buyers have saved an average of 28% on their new structure using our multiple quote service.

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Let us help you find the ideal metal building for sale.

  • Tell us about your project
  • We match you with vetted suppliers
  • You receive four competing quotes
  • Select the most suitable supplier
  • Start your project