Estimate what a lead and appointment can be worth to your business.
Use job value, close rate and gross margin to work backward into an allowable acquisition cost instead of choosing a marketing budget blindly. This is a manual calculation guide, not an interactive calculator. The example figures below are illustrative assumptions, not industry benchmarks or promised results.
Get your free Contractor Growth Leak Map →How do you calculate a target cost per appointment?
Start with average sold-job revenue, multiply by gross margin to estimate gross profit, then decide what share of gross profit you are willing to spend to acquire a customer. Multiply that allowable customer acquisition cost by your appointment-to-sale close rate to estimate a target appointment cost.
Example
If a contractor earns $10,000 per sold job at a 40% gross margin, gross profit is $4,000. If the business is willing to spend 25% of gross profit to acquire a customer, allowable customer acquisition cost is $1,000. At a 25% appointment-to-sale close rate, target appointment cost is approximately $250.
How do you estimate target CPL?
Multiply target appointment cost by the percentage of leads that become qualified appointments. If the target appointment cost is $250 and 30% of leads book qualified appointments, the implied target CPL is about $75. Use the same appointment definition in both rates: do not mix booked appointments with attended appointments. Calculate rates from a consistent group of leads with enough time to reach a sales outcome. If your acquisition allowance includes agency fees, software or other acquisition expenses, subtract those costs before treating the remainder as an ad-spend allowance. Gross profit must also cover overhead and your desired operating profit; this calculation is not a break-even guarantee.
Roofing marketing cost · Measurement framework · Lead qualification framework
Which numbers should you collect before setting a target?
Average sold-job revenue and gross margin.
Attended appointments, estimates and sold jobs.
Total leads, qualified leads and booked appointments.
Ad spend, agency fees, software and call-tracking costs.
Turn the calculation into an operating decision.
First calculate allowable cost per sold job, then work backward to appointment and lead targets. Compare those targets with actual results from the same period and the same funnel definitions.
- If CPL is acceptable but appointment cost is high, review qualification, response time and booking.
- If appointment cost is acceptable but sold-job cost is high, review attendance, estimating and close rate.
- If the fully loaded acquisition cost exceeds the allowance, separate media efficiency from agency, software and operational costs before changing budget.
- If the sample size is small or jobs have long sales cycles, wait for mature outcomes before drawing a strong conclusion.
This worksheet supports diagnosis; it does not replace cash-flow planning, margin analysis or professional financial advice.
Want these numbers reviewed against your real business?
Your one-page Contractor Growth Leak Map can connect your allowable acquisition-cost assumptions with available funnel evidence, identify the largest visible constraint and specify the next measurement. It is diagnostic—not financial advice or a guarantee of performance.
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