DesignFlow Build
Construction ERP ROI: The Real Math
Most "ROI" claims are made up. Here is a transparent, sourced way to calculate construction ERP ROI from hard labor savings — with a worked example and a free calculator.
How to calculate it
Count the hours of manual work the software eliminates, value them at the fully-loaded wage of the staff who did that work (base salary × 1.30 for payroll tax, benefits and overhead), and compare the annual savings to the software cost. Lead with the payback period — software cost ÷ monthly savings — because it is exact arithmetic. Count only hard labor savings; leave revenue gains (more bids won, faster delivery) out so the number stays conservative.
Fully-loaded wages used (US benchmarks)
| Role | Base salary | Source | Loaded $/hr |
|---|---|---|---|
| Cost estimator | $77,070 | BLS median, May 2024 | $50.10 |
| Project manager | $100,000 | Indeed avg, 2025 | $65.00 |
| Scheduler / planner | $80,000 | Salary.com / Payscale | $52.00 |
| Admin / data entry | $50,000 | ZipRecruiter | $32.50 |
Worked example — a $10M contractor (12 office + 25 field, $21,900/yr)
| Capability | $/hr | Hrs/wk | Annual |
|---|---|---|---|
| AI Blueprint Takeoff — quantity takeoff (Estimator) | $50.10 | 12 | $31,260 |
| AI Bid Day — scope/spec extraction (Estimator) | $50.10 | 6 | $15,630 |
| Data entry & admin automation (Admin) | $32.50 | 24 | $40,560 |
| AI scheduling (vs manual P6) (Scheduler) | $52.00 | 6 | $16,224 |
| Executive dashboards / reporting (PM) | $65.00 | 5 | $16,900 |
| Total — ~1.4 FTE | 53 | $120,573 |
~2.2 mo
Payback (exact 2.18)$98,673
Net annual savings451%
First-year ROI on software~1.4 FTE
Manual work eliminatedPayback = $21,900 ÷ ($120,573 ÷ 12) = 2.18 months. First-year ROI = ($120,573 − $21,900) ÷ $21,900 = 451%. Hard labor savings only; bid-win and throughput revenue upside excluded by design.
Run your own numbers
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ROI Calculator
Compare your costs and competitive advantage against companies using enterprise ERPs
Step 1: Your Company Profile
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Step 2: Current Operations
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Typical contract size
Frequently asked questions
Faster is better; under ~6 months is strong. For a representative $10M-revenue contractor, DesignFlow Build pays back in about 2 months on hard labor savings alone (exact: 2.18 months) — because SaaS cost is small relative to the labor it removes.
Payback is exact arithmetic and hard to dispute; a large ROI percentage invites skepticism. The same model expressed as first-year ROI on software cost is about 451% for the representative firm — but the ~2-month payback is the number a CFO trusts.
Hard labor savings across estimating takeoff, bid scope extraction, data entry, scheduling and reporting — about 53 hours/week (~1.4 full-time positions) for a representative $10M contractor, or roughly $120,600/year in labor, ~$98,700 net of subscription. Revenue upside from winning more bids and faster delivery is excluded to keep the figure conservative.