Clear span structures are a popular solution for industries ranging from agriculture and warehousing to sports and events. These buildings offer wide-open interior spaces free of columns or supports, maximizing usable area. While the benefits are clear, the clear span structure cost varies depending on several key components. In this article, we break down the cost into structure, cover, foundation, installation, and maintenance — and wrap up with a real-world ROI scenario.
1. Structure: The Core Frame
The structural frame is the skeleton of any clear span building, typically made from steel.
Steel frames are the most common, offering durability and high load capacity.
Cost range: $8–$15 per square foot
For our 80′ x 120′ example (9,600 sq ft), the structure alone would cost between $76,800 and $144,000 depending on materials and engineering complexity
Factors influencing cost:
- Required snow or wind loads
- Building height and clearances
- Regional engineering codes
2. Cover: Fabric Membrane
The cover or envelope of a clear span building significantly influences cost and performance.
Fabric covers (e.g., PVC or polyethylene) are cost-effective and allow natural light in, reducing energy costs.
Cost range: $4–$10 per square foot
For our sample size, expect to spend $38,400 to $96,000 on covering.
Considerations:
- UV resistance and insulation
- Fire rating
- Local climate conditions
3. Foundation: More Than Just Concrete
Foundations vary from simple ground anchors for temporary structures to full concrete slabs or piers for permanent installations.
- Concrete slabs offer the best long-term stability and are ideal for storage and equipment-heavy operations.
- Concrete blocks
- Pier or post foundations may suffice for temporary or agricultural use.
Cost range: $5–$10 per square foot
Total foundation cost for our 80′ x 120′ structure would be $48,000 to $96,000.
Variables:
- Soil conditions
- Frost depth
- Drainage and grading requirements
4. Installation: Labor and Equipment
Labor costs can vary significantly based on location, complexity, and accessibility.
- DIY or kit-based models can reduce labor costs but require expertise.
- Professional installation ensures compliance with engineering specs and quicker timelines.
Cost range: $3–$6 per square foot
This puts the installation cost for our model between $28,800 and $57,600.
Things that impact cost:
- Crane and lifting equipment requirements
- Weather delays
- Site preparation
5. Maintenance: Protecting Your Investment
Clear span structures are relatively low maintenance, especially when properly installed.
- Fabric buildings may require tension adjustments and cover replacement after 15–20 years.
- Steel buildings may need repainting or corrosion protection in harsh environments.
Annual maintenance cost: Approx. $0.25–$0.50 per square foot
That’s $2,400 to $4,800/year for an 80′ x 120′ structure.
Total Clear Span Structure Cost Cost Estimate (80′ x 120′)
Let’s summarize the cost across categories:
| Component | Cost per Sq Ft | Total Cost (Range) |
|---|---|---|
| Structure | $8–$15 | $76,800 – $144,000 |
| Cover | $4–$10 | $38,400 – $96,000 |
| Foundation | $5–$10 | $48,000 – $96,000 |
| Installation | $3–$6 | $28,800 – $57,600 |
| Total | $20–$41 | $192,000 – $393,600 |
For budgeting purposes, an all-in Clear Span Structure Cost of $30 per square foot lands you at $288,000 total — right in the middle of the range.
ROI Analysis: Is It Worth It?
For businesses, ROI is a critical consideration when investing in infrastructure. Let’s consider a few scenarios for our 80′ x 120′ clear span building at $288,000:
Scenario 1: Agricultural Storage
- Rental cost of similar size storage: $1.50/sqft/month → $14,400/month
- Payback period: 20 months (under 2 years)
Scenario 2: Equipment Maintenance Garage
- Savings from equipment protection, increased uptime, and reduced downtime: Estimated at $50,000/year
- Payback period: ~5.75 years
Scenario 3: Commercial Rental or Events
- Rental income: $2,000/weekend use = $104,000/year
- Payback period: ~2.75 years
Additionally, these structures often qualify for depreciation under IRS Section 179 or bonus depreciation, potentially offering tax advantages in the first year.
Conclusion
The clear span structure cost depends heavily on material choice, installation complexity, and use case. For a standard 80′ x 120′ building, you can expect a total investment around $288,000, with a strong ROI potential in multiple industries. By understanding the individual cost components — structure, cover, foundation, installation, and maintenance — you can better plan your project and maximize value over the life of the building.