Commercial Roof Cost Calculator
Commercial Roof Replacement Cost
Get an instant planning range for a full commercial roof replacement in Boise. Enter your roof size, pick a system, and set the complexity, then book a free inspection for an exact, project-based quote.
Total roof surface area, not the building's floor footprint. Most single-story commercial buildings have roof area close to their footprint.
This is a ballpark planning estimate. Your exact price depends on deck condition, insulation, drainage, and access.
Repairing, not replacing? Try the Repair Cost Calculator
How Much Does a Commercial Roof Cost in Boise?
Most commercial properties in the Treasure Valley spend between $5.50 and $17 per square foot on a full roof replacement, depending on the system and the roof's complexity. The calculator above turns your roof size, system, and complexity into a realistic price range in seconds, the same factors a roofer uses when scoping a commercial re-roof.
What Drives the Price of a Commercial Roof Replacement?
Roof size. The single biggest factor. A larger roof needs more material and more labor hours, so square footage sets the base cost before any other variable is applied.
System choice. EPDM typically carries the lowest installed cost. TPO sits slightly higher and remains the most common choice for large flat roofs due to its reflective, energy-efficient surface. PVC costs more but resists chemical exposure and grease, making it common on restaurants. Built-up roofing (BUR) is a proven, mid-range option for industrial buildings. Standing seam metal carries the highest upfront cost but can last 40 or more years.
Roof complexity. Rooftop HVAC units, drains, skylights, parapet walls, and multiple roof levels all add labor time and material detailing, which raises the cost per square foot compared to a simple, open roof.
Deck condition and insulation. Tear-off often reveals rotted decking or saturated insulation that needs replacing, cost that only becomes clear once the old roof is off, which is why an on-site inspection gives a firmer number than any calculator.
Is It Cheaper to Repair or Replace My Commercial Roof?
If your roof is relatively young and the damage is limited to a small area, a repair is usually the smarter spend. If it's near the end of its expected service life, leaking in multiple spots, or you're paying for repeated fixes, a full replacement is often the better long-term value. Use the Repair Cost Calculator to compare, then book a free roof inspection for a clear recommendation.
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Commercial Roof Cost Questions
How accurate is this commercial roof cost calculator?▼
It gives a realistic planning range based on Boise-area commercial roofing pricing, your roof size, system, and complexity. It can't see your deck condition, insulation, or existing layers, so treat it as a budget guide. A free inspection gives you an exact, project-based quote.
Does the estimate include tear-off of the old roof?▶
The ranges shown assume a standard tear-off and disposal of one existing layer. Multiple layers, deck repair, or insulation upgrades can add to the final quote.
How much does a commercial roof replacement cost in Boise?▶
Most commercial roof replacements in the Treasure Valley run between $5.50 and $17 per square foot depending on the system and roof complexity. Larger, more complex roofs with heavy rooftop equipment cost more per square foot.
Which commercial roofing system costs the least?▶
EPDM typically has the lowest installed cost per square foot among common commercial systems, followed by TPO and built-up roofing. Metal and PVC systems generally carry a higher upfront cost but can offer longer service life.
Get Your Exact Quote
A calculator can only give you a range. A free on-site inspection gives you a precise, project-based number for your building.
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