How do we know how many calls we're currently missing?

Your phone carrier or a call tracking service can show total inbound call volume. Compare that against your actual bookings. The gap — adjusted for calls that weren't booking inquiries — is your missed call count. Most contractors who do this analysis for the first time discover they're missing significantly more calls than they estimated. The common assumption is 'I answer most calls'; the data typically shows 25–40% are missed during business hours alone.

What's the minimum call volume where AI voice makes financial sense?

For most contractor businesses, the minimum viable case is 15+ inbound calls per week. Below this volume, the missed call math produces a smaller number, though the staffing cost avoidance component still applies. Above 15 calls/week, the ROI case is typically clear within the first month of operation.

✦ AI Voice

AI Voice ROI for Service Businesses

The ROI of AI voice for a service business comes primarily from one source: converting calls that currently go to voicemail into bookings. For a contractor missing 5 calls per week to voicemail at a $500 average job value, recovering 50% of those calls is worth $65,000/year. Against an AI voice cost that is a small fraction of that, the return is measured in weeks, not years.

The AI voice ROI calculation for contractors has two components:

Component 1: Missed call recovery

Estimate your current missed call rate. If you're a single-operator contractor on the tools all day, you're likely missing 30–50% of calls — every call that comes in while you're actively working. If you have office staff who answer during business hours, the misses are concentrated in after-hours, weekends, and lunch periods.

Missed calls per week × average job value × conversion rate × 52 = annual missed revenue

Example: plumber missing 6 calls/week at $450 average job, 55% conversion rate if answered: 6 × $450 × 0.55 × 52 = $77,220/year in missed revenue

AI voice recovery at 60%: $77,220 × 0.60 = $46,332/year in recovered revenue

Component 2: Staffing cost reduction or avoidance

If the AI voice agent is replacing a part-time receptionist (or preventing the need to hire one as call volume grows), the staffing cost savings are direct: Part-time receptionist cost avoided: $19,000–$26,000/year

Combined annual value: $46,332 (recovered revenue) + $19,000+ (staffing cost avoided) = $65,332/year Payback period on AI voice investment: typically under 60 days.

This is the conservative case. It doesn't include the value of AI voice handling after-hours emergency escalations, improving client experience with immediate answers, or freeing the owner from interrupting billable work to answer calls.

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