600 sq ft · Clear-span
20x30 Steel Building
A 20' wide by 30' long pre-engineered steel building — 600 square feet of clear-span usable space. Ideal for single-bay garage, small hobby shop, storage shed.
Best Uses
- Single-bay garage
- Small hobby shop
- Storage shed
Standard Configuration
- Width
- 20'
- Length
- 30'
- Doors
- One 10x10 roll-up
- Eave height
- 10'
- Wind rating
- up to 150 mph
- Snow rating
- up to 60 psf
Realistic 20x30 layouts
Single-vehicle garage
One 10x10 roll-up on the 20' endwall, a 3'0 walk door on the sidewall, and roughly 400 sq ft of remaining floor for a bench and shelving.
Hobby shop
Two 3'0x4'0 windows on the south sidewall for daylight, one 10x8 roll-up, and a 20' clear-span work area with no interior columns.
What the price includes
A building package covers the engineered shell: primary frames, secondary framing, roof and wall panels, trim, fasteners, framed openings, and engineered drawings sealed where required. Freight is quoted by destination. It does not include the slab and footings, site work, erection labor, MEP, interior finishes, or permit fees.
At 600 sq ft, design wind speed, ground snow load, eave height, and door count are what move your final number. Request current package pricing and we will price the configuration with our manufacturing partners.
Estimate the Cost of a 20x30 Steel BuildingEngineering & site notes
- Wind, snow and seismic
- Loads come from ASCE 7 as adopted by your jurisdiction, not from a national default. This footprint is commonly engineered for up to 150 mph wind and up to 60 psf snow, but your county sets the actual values.
- Foundation
- A local engineer designs the slab and footings from the anchor bolt and reaction drawings shipped with your package. Soils, frost depth, and the loads you put on the floor determine thickness and reinforcement.
- Insulation
- Banded blanket insulation is the value option; insulated metal panels and spray foam cost more and perform better. If the space will be heated or cooled, decide before ordering — the envelope strategy affects framing and trim details.
- Expansion
- A 20' width is the practical minimum for a single vehicle plus a work aisle. Extending length in 5' bays later is straightforward if the endwall is framed as an expandable endwall at order time.
- Delivery
- Ships by flatbed from the plant serving your region. Your site needs firm access for tractor-trailers, and offloading is arranged with your crew in advance.
Add-ons & Upgrades
- Insulation package (R-13 walls / R-19 roof) — from $2.10 / sq ft
- Additional 10x10 roll-up door — from $1,850
- Additional 12x12 roll-up door — from $2,650
- Insulated 3'0 walk door — from $650
- 3'0x4'0 double-pane window — from $475
- Cupolas and ridge vents — from $780
- Wainscot color (2-tone) — from $1,250
- Lean-to attachment (10' wide) — from $4,900
FREE CONSULTATION • NO PRESSURE • NO OBLIGATION
Let's talk about your 20x30 building.
Every great building starts with the right plan. Tell us about your project, and we'll review your goals, answer your questions, and prepare a customized building quote based on your specific needs—not a one-size-fits-all estimate.
From planning and permitting to engineering and manufacturing-partner coordination, we're here to help you make informed decisions before steel is ever ordered.
You'll receive honest guidance, transparent pricing, and a building proposal designed around your project, timeline, and budget.
- Honest guidance
- Transparent pricing
- Direct coordination with our manufacturing partners
- Planning and permitting support
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