The phone rang twelve times last week and nobody picked up. Some of those callers left voicemails, most didn't. Of the voicemails, a few turned into jobs. The rest — the silent majority — are gone, and the only thing your call log can tell you is that they called.
That's the gap between missed calls and missed jobs. A missed call is something your phone system counts. A missed job is something only the caller knows. The first is easy to measure; the second is what you're trying to figure out. This pillar is about closing that gap honestly — converting a missed-call count into a lost-job estimate you can defend, without over-claiming and without under-claiming.
Every missed call is, by definition, a call that didn't get a live answer. Most of them are also calls that didn't result in a job. The interesting question is the conversion rate.
If you answered every call, some share would book. We call that your close rate — the share of answered inbound calls that turn into a scheduled job. For a typical garage door shop, a planning figure contractors often report is 40–60%, with the higher end on after-hours and weekend calls because the urgency skews higher.
Apply that close rate to your missed calls and you get an estimate of the jobs you lost. The math is simple:
Estimated missed jobs = missed calls × close rate
A shop that misses 20 calls a month and would have closed 50% of them if they'd picked up has an estimated 10 missed jobs a month. That's the conversion from one number (calls) to the other (jobs).
The dollar figure is one more step:
Estimated missed revenue = missed calls × close rate × average ticket
For the worked version, see the missed call revenue calculator. The point of this pillar is the underlying logic — how to think about the conversion from calls to jobs in a way that holds up.
Not every missed call is the same, and treating them as one number is a mistake. There are two categories, and they convert to jobs at different rates.
Category A: Calls your phone system can see. These are the calls that rang your line, weren't answered, and showed up in your missed-call log. The conversion rate here is your normal close rate, give or take. A reasonable planning figure is 40–60%, same as answered calls.
Category B: Calls your phone system can't see. A caller dials your shop, hears one or two rings, and hangs up before the system registers a miss. They then call the next company. From your side, the call never happened. There is no log entry, no voicemail, nothing. This is the leak inside the leak, and we cover the size of it in the calls you don't know you missed.
Category B is hard to measure directly. The proxy is to compare your missed-call count against your total inbound call count, and the gap is the category B volume. Most owners find that the gap is bigger than they expected — sometimes Category B is as large as Category A.
For lost-job estimates, the honest move is to assume Category B converts at roughly the same rate as Category A. A 50% close rate on the missed calls you can see, applied to the missed calls you can't see, gets you a defensible total.
The defensible method is straightforward. Five steps, and you can run it on a single sheet of paper.
That gives you a defensible monthly lost-job number. It accounts for both the visible and invisible missed calls, applies a realistic close rate, and prices the result at your actual ticket. Most owners who run it land in the $2,000–$8,000 a month range, depending on volume and ticket mix.
For the underlying method, see how to estimate lost jobs from your call logs.
Say your shop:
Step 1: total missed calls = 15 + 8 = 23. Step 2: estimated lost jobs = 23 × 0.50 = 11.5. Step 3: estimated lost revenue = 11.5 × $375 = $4,312 a month.
Across a year, that's $51,750 in lost revenue from missed calls. And that's the conservative number. It assumes no lifetime value, no referrals, no second-door job two years out. It's just the first-ticket math, with both visible and invisible misses counted.
The conversion math is honest, but the inputs aren't always clean. A few honest discounts to consider:
Discounting 10–20% off the raw missed-call count, before applying the close rate, is the honest adjustment. Most owners find this brings the estimate close to the unadjusted number anyway, because the under-counting from Category B and the over-counting from junk roughly offset.
We cover this trade-off in not every missed call is a lost job — the headline is that the math is defensible as long as you discount the junk and admit the unseen.
A single month's number is informative. Three months is more useful. Six months is a baseline you can plan against.
The reason is seasonality. A garage door shop's missed-call count moves with the season — storm weeks, spring ruts, holiday weekends. A single high-volume month can over-state the problem; a single slow month can under-state it. The shape of the curve over six months is what tells you whether your coverage needs to scale or whether you have a structural problem.
Three numbers to track monthly: - Missed calls. Total, including the visible log and your best Category B estimate. - Estimated lost jobs. Missed calls × close rate. - Estimated lost revenue. Lost jobs × average ticket.
Run these once a month. After three months, you'll have a number you can take to the bank — and a baseline to measure any coverage change against.
Once you have a defensible monthly lost-revenue figure, the coverage decision is a comparison.
If your estimated lost revenue is more than $297 a month, the flat-fee AI wins on math alone. If it's more than $1,500 a month, the AI wins by a factor of five. The exact ratio depends on your volume, but for most shops the comparison is lopsided.
For the full cost comparison, see answering service cost comparison.
Three honest uses for a defensible missed-job estimate:
The number doesn't have to be exact. It has to be defensible — close enough to the truth that you can use it to make a decision and live with the result. The three-step formula gets you there.
The most common mistake owners make with the missed-call problem is counting the missed calls and then stopping. They see a number, they have a reaction, and they move on without converting it to lost jobs. The count of missed calls is striking, but it doesn't lead to action on its own.
The conversion to lost jobs is what makes the number useful. It's the difference between "we missed 20 calls last month" — which is interesting — and "we lost about 10 jobs and roughly $3,750 in revenue last month" — which is a number that funds a decision.
A small investment of time converting the count to jobs and dollars pays for itself the first time you use it to make a coverage decision. The math is simple, the inputs are honest, and the result is a number you can act on without hand-waving.
A "lost job" in this context isn't a job you were promised and didn't deliver. It's a job that would have happened if you had picked up the phone. The distinction matters because it's what the close rate is doing in the formula. The close rate is the share of missed calls that, on average, would have converted if a human had been there to talk to the caller.
A few things to remember about this: - It's an estimate, not a count. You can't actually count lost jobs. The only honest answer is to estimate them. - The estimate is more useful than the count. Even an approximate lost-job figure is a better planning input than a precise missed-call count. - The estimate moves with your close rate. A shop with a high close rate (lots of answered calls turn into jobs) has a higher lost-job estimate per missed call. A shop with a low close rate (lots of price shoppers) has a lower one. The formula respects this.
For most planning purposes, the formula's estimate is close enough to use directly. It's the right number for a coverage decision, even if it's not the right number for a court filing.
Missed calls and missed jobs aren't the same number. The conversion depends on your close rate, your average ticket, and the share of missed calls that were ever going to book. With three inputs, you can produce a defensible monthly lost-revenue figure, and that figure is the basis for any coverage decision.
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Count the calls. Convert to jobs. Compare to $297. The math lands the same place most months.
Call the live demo and have Ava call you now — hear exactly what your customers will hear when they call your shop.