Side-by-side: cost per booked call
The sticker price tells you part of the story. The useful metric is cost per booked appointment.
Assume 60 inbound calls/week = 3,120 calls/year. Typical booking rate on inbound service calls when answered properly: 50–70%. Let's assume 60% for both options.
The receptionist answers more of the calls that reach them (business-hour calls), but never answers after-hours calls at all. The AI covers all hours. Even with a slightly lower per-call booking rate (say 55% vs 60%), the AI books more jobs by volume because it covers more of the inbound.
The ratio is staggering. Per booked call, the AI agent costs 30–300x less than a hired receptionist.
Where hiring a receptionist still wins
AI is not universally better. There are real scenarios where hiring a human makes more sense:
- You need someone handling more than phones. Mail, scheduling, paperwork, inventory, customer walk-ins. AI doesn't do these. A part-time receptionist can.
- Your business has highly complex conversational needs. Custom home builders quoting $200K projects benefit from human judgment throughout the sales conversation.
- Your customer demographic prefers human voices. Some elderly or traditional customer bases resist AI interactions. Know your customers.
- You already have office admin needs a receptionist could cover. If you're hiring anyway, that person can answer phones as part of the job.
In these scenarios, the question isn't “AI or human” — it's “human plus AI” or “human alone depending on complexity.” Many growing contractors end up with both: a part-time or full-time office person for complex work, plus AI for after-hours and overflow calls.
The break-even analysis
Is there a point at which hiring a receptionist becomes cheaper than AI? Yes, but only in unusual scenarios:
- You need 40+ hours/week of non-phone admin work done that only a human can do. At that point, you're hiring for admin, and phones are a bonus.
- Your call volume is so low (<15 calls/week) that even a starter AI plan overpays, and your cell works fine.
- Your customer base is unusually AI-resistant for cultural or demographic reasons.
Outside those scenarios, AI wins on cost per booked call by such a wide margin that the case for hiring a receptionist specifically for phones is hard to make.
What we actually recommend
For a $750K contractor doing 60–80 calls/week:
- Start with AI. $199/mo gets you coverage, scaling, and 24/7 availability. Immediate ROI. Low risk.
- Add a part-time admin if and only if you have admin work that isn't phones. Treat that person as an admin assistant who happens to answer some calls, not as a “receptionist.” Budget is $15–$25K/year for part-time coverage.
- Layer the two. AI answers the first ring. Admin person handles overflow, complex conversations, and anything that needs judgment.
At $2,400–$5,000/year all-in for AI plus part-time admin, you're covered on both axes for one-tenth the cost of a full-time hire.
The short version
Hiring a full-time receptionist costs $47K–$72K per year fully loaded. An AI phone agent costs $600–$3,600 per year fully loaded.
The human covers 24% of hours. The AI covers 100%.
The human requires management, coaching, PTO coverage, replacement hiring. The AI does not.
For contractors whose primary need is “my phone gets answered reliably,” AI wins decisively on cost per booked call. For contractors who need a generalist office admin, hire for admin and use AI for phones.
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