Contractor Resources
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Articles & Guides (52)
View all →GC Fee Benchmarks 2026: Commercial Construction by Project Size + Contract Type
Commercial GC fee typically runs 3–8% of project cost in 2026. Benchmark report breaks down typical ranges by project size, contract structure (lump sum / CM-at-risk / cost-plus), and project type, with methodology you can defend to ownership.
Read articleSubcontractor Markup by Trade 2026: Commercial Construction Benchmark
Subcontractor markup ranges 15–35% on commercial construction in 2026, with specialty trades hitting 30–50%. Benchmark by CSI division for bid leveling — drywall, MEP, electrical, controls, glazing, and 18 more trades documented.
Read articleWhat Does a $5M Warehouse Buildout Actually Cost? CSI-Division Breakdown
A $5M commercial warehouse buildout breaks down to ~$100/sf turnkey. Full CSI-division cost breakdown for a 50,000 sq ft insulated PEMB shell with 10% office finish — every line item from concrete to electrical to GC fee.
Read articleHow Many Bricks Do You Need? Free Calculator + Cost Guide
Brick installation costs $10–$25/sf. Free calculator gives exact brick count, mortar volume, and material cost — for any wall, patio, or chimney project.
Read articleCalculators (42)
View all →Spray Foam Insulation Cost Calculator
Estimate spray foam material, board feet, and installed cost for commercial walls and roofs. Closed-cell $1.50–$3.50/bf installed; open-cell $0.50–$1.50/bf. Three inputs, defensible bid range with regional adjustment.
Try calculatorEpoxy Flooring Cost Calculator
Estimate epoxy material, prep cost, and total installed cost for commercial floors. Single-coat $3–$5/sf, decorative flake $5–$12/sf, metallic $7–$15/sf. Splits prep cost separately so you can see the real bid.
Try calculatorMetal Building Cost Calculator
Estimate steel kit, foundation, erection, and shipping for commercial pre-engineered metal buildings. Shell-only kits $20–$35/sf; turnkey insulated $50–$80/sf. All four line items separated so kit-only quotes don't mislead.
Try calculatorAsphalt Driveway Calculator
Estimate the cost of your new asphalt driveway project with BidFlow's free calculator. Input dimensions, asphalt/base thickness, site conditions, and cost factors for a detailed estimate.
Try calculatorTemplates (8)
View all →Free Schedule of Values Template
Download our free Schedule of Values template — pre-loaded with CSI MasterFormat 2024 divisions, AIA G702/G703-compatible columns, allowance + alternate tracking, and pre-wired formulas. Excel + Google Sheets, ready for lender draws.
Download templateFree Change Order Template + GC Playbook
Download our free Change Order template with AIA G701 / G701S-compatible structure, time + cost impact tracking, markup schedule by trade (15% commodity / 22% MEP / 30% specialty), backup checklist, and a 5-page GC change-order management playbook.
Download templateFree Commercial Construction Budget Template
Download our free commercial construction budget template for Excel/Google Sheets. Track materials, labor, equipment, and subcontractor costs for commercial projects.
Download templateFree Construction Project Budget Template
Download our free construction project budget template for Excel/Google Sheets. Track materials, labor, equipment, and subcontractor costs to increase profitability.
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