Solo plumber
- 10 missed calls/week (owner on jobs all day)
- 60% real prospects → 6 calls
- Half never won back → 3 lost callers
- Average ticket: $300
3 × $300 = $900/week → ~$46,800/year in quietly lost work.
Resource · The math of missed calls
What a missed call really costs a Florida service business.
Not a scare number — a formula. Here's the plain arithmetic of missed calls, honest industry-estimate job values by trade, and worked examples you can redo with your own numbers in five minutes.
The math
The missed-call formula
Every job in a service business starts the same way: someone with a problem picks up a phone. When that call goes unanswered, one of three things happens — the caller leaves a voicemail and waits, the caller tries again later, or the caller dials the next business on Google. The third outcome is the expensive one, and in competitive Florida trades it’s common, because the caller usually doesn’t need you specifically. They need the leak fixed.
The cost of that leak is four numbers multiplied together:
Missed calls per week × % that were real prospects × % you never win back × average job value
= revenue lost per week. Multiply by 52 for the annual figure.
Two of those numbers deserve honest handling. First, not every missed call is a customer — spam, vendors, and wrong numbers are real, so the examples below assume only a portion of missed calls were genuine prospects. Second, not every unanswered prospect is lost — some do call back. The examples assume you recover some of them. What’s left is the conservative core: real prospects who called, got no answer, and hired someone else.
Why the leak is invisible
A missed call never shows up on a P&L. There’s no invoice for the job you didn’t get, no line item for the caller who hung up at your voicemail greeting at 7:40pm on a Tuesday. The work you dowin keeps you busy enough that the phone ringing out while you’re under a house feels like a fact of life rather than a cost center. The only way to see it is to count it — which is what the rest of this page does.
Plug in your trade
Average job values by trade — honest estimates
These are industry-estimate ranges of the kind published in trade cost guides — not Summit client data, not a promise, and not precise for your market. They exist so you can pick a realistic starting point; your own average ticket, pulled from your last 50 invoices, is always the better number.
| Trade | Typical job value (industry estimate) |
|---|---|
| Plumbing (service call / repair) | $150 – $600 |
| HVAC (repair visit) | $150 – $600 |
| HVAC (system replacement) | $5,000 – $12,000+ |
| Electrical (service / repair) | $150 – $500 |
| Roofing (repair) | $400 – $2,000 |
| Roofing (full replacement) | $8,000 – $20,000+ |
| Pest control (initial + plan) | $150 – $500 first visit |
| Landscaping / lawn (recurring) | $100 – $300/mo ongoing |
| Pool service (recurring) | $100 – $250/mo ongoing |
| Pressure washing / exterior cleaning | $200 – $600 |
Note the recurring trades: a missed pool-service or lawn-care call isn’t one ticket, it’s a monthly contract. A $150/mo account kept for two years is $3,600 — from a single answered call.
Worked examples
Three static calculator runs
Same formula, three hypothetical businesses. These are illustrations of the arithmetic — deliberately conservative — not case studies or client results.
Three-crew roofer
- 15 missed calls/week (busy season, after-hours storm calls)
- 50% real prospects → 7.5 calls
- 40% never won back → 3 lost callers
- Blended job value: $2,500 (mostly repairs, occasional replacement)
- Close rate on answered prospects: 33% → 1 lost job/week
1 × $2,500 = $2,500/week → ~$130,000/year — one lost replacement quote a month dwarfs everything else.
Pool service company
- 6 missed calls/week
- 50% real prospects, half lost → 1.5 lost callers/week
- 1 in 3 would have signed a plan → ~2 lost accounts/month
- $150/mo plan, kept ~24 months = $3,600 lifetime value
2 accounts/mo × $3,600 = ~$86,400/year in lifetime contract value walking to competitors.
Disagree with an assumption? Good — that’s the point. Cut every input in half and rerun it. For the solo plumber that’s still roughly $11,700 a year, lost one unanswered ring at a time.
Where the leak lives
When Florida service businesses miss calls
During the workday, mid-job
The cruel irony of the trades: the hours your phone rings hardest are the hours your hands are least free. A plumber under a sink and a roofer on a ridge can’t answer — so the busier you are, the more you leak.
Evenings and weekends
Homeowners discover problems when they get home and shop for help after dinner. An AC that dies at 6pm in a Florida August does not wait politely for Monday — that caller hires whoever answers tonight.
Storm and season surges
After a hurricane brush or a summer heat wave, call volume spikes past what any office can absorb. Surge weeks carry the year’s highest-value work — and the year’s highest miss rates — at the same time.
The fix isn’t working more hours; it’s making sure an answer happens whether or not you’re free. That can be staff, a rotation, an answering service, or an AI front desk that answers on your existing line 24/7 and books the job on the spot. Pair it with a website and Google profile that get found first and lead engines that keep the phone ringing, and the formula on this page starts working for you instead of against you. We serve Florida’s east coast from the Space Coast through the Treasure Coast and beyond — see every area we serve.
FAQ
Missed-call math, straight answers
Common questions about counting — and fixing — the calls that ring out.
- They're honest industry estimates — the kind of ballpark ranges published across trade cost guides and contractor pricing surveys — not Summit client data and not a guarantee. Every market and company prices differently, which is why the worked examples on this page show the formula so you can substitute your own real numbers.
- Check your phone carrier or VoIP dashboard for missed and abandoned calls, count voicemails left after hours in a typical week, and — the honest tell — count the voicemails you returned that never picked up again. Most owners who run this exercise for one week find the number is higher than they guessed.
- Only if the caller leaves a message and waits for you. Many callers hang up at the voicemail greeting and dial the next result on Google, because in the trades several businesses can usually do the same job. Speed of answer, not just quality of work, often decides who gets it.
- No — and this page doesn't assume that. Some missed calls are spam, some are existing customers who'll call back, and some wouldn't have booked anyway. That's why the worked examples apply a conservative discount: they only count a fraction of missed calls as genuinely lost work. Even at those conservative rates, the annual number is usually significant.
- Options range from call-forwarding rotations and answering services to an AI front desk that answers on your existing line 24/7 and books jobs onto your calendar. You can hear Summit's version live right now — call (772) 444-8030, our live AI demo line, and try it yourself.
Run the numbers, then plug the leak.
Hear what an answered call sounds like — dial our live AI demo line at (772) 444-8030 — then book a free discovery call and we'll run this formula on your real call volume.
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