The 20×30 Metal Building, Priced Out
2026 pricing guide · updated August 18, 2026
At 600 square feet, a 20×30 is the entry point for real steel — a generous single-car garage plus shop space, a lawn-equipment building that outlives every shed, or covered storage that actually locks. It's also the size where "just go a little bigger" deserves an honest look.
What a 20×30 costs in 2026
| Scope (600 sq ft) | Typical 2026 range |
|---|---|
| Steel building kit only (engineered, delivered) | $8,500 – $14,500 |
| Kit + professional erection | $13,000 – $21,000 |
| Turnkey (kit, concrete slab, erection) | $20,000 – $33,000 |
The size-up math
Before you order: a 24×30 typically adds only $1,500–$2,500 to the kit price — about 15% more money for 20% more floor. If the slab isn't poured yet, price both in the designer before committing. Steel's cheapest square feet are the ones you buy on day one.
What actually fits in 20×30
- 1-car + shop: one 9-ft door, vehicle on one side, 8-ft bench wall on the other.
- Equipment building: mower, tractor attachments, and wheelbarrows with room to move — one 10-ft door on the gable end.
- Storage that appraises: unlike portable sheds, an engineered steel building on a permitted slab adds assessed value.
Specs that move the price
- Enclosure: fully enclosed vs open-sided changes the panel count — an open equipment cover runs 25–35% less.
- Eave height: 9–10 ft serves most uses at this size.
Price yours in 3D — free
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Open the 3D Designer →Frequently asked questions
How much does a 20x30 metal building cost?
In 2026 a 20x30 steel building kit typically runs $8,500–$14,500 delivered; erected, $13,000–$21,000; turnkey with slab, $20,000–$33,000.
Is a 20x30 metal building cheaper than a wooden garage?
Usually yes once you pass shed scale — engineered steel kits beat stick-built garages on materials and go up in days, and they carry engineered wind/snow ratings a kit shed does not.