The phone rang. Nobody picked up. The caller hung up and called the next company on the list. From your side, nothing happened — no ticket, no invoice, no record. You never see the job you lost. That's the problem with missed call revenue loss: it's invisible, so it doesn't get fixed, and it quietly compounds every week the phones keep going to voicemail.
This pillar walks through what missed calls cost contractors in real numbers. Not a guess, not an industry average you can't verify — a simple formula you can plug your own ticket, close rate, and missed-call count into and rerun whenever you want. By the end, you'll have a defensible monthly dollar figure for the calls your shop is losing, and a sense of whether answering every call is worth the change it'd take to make that happen.
Two things get conflated when owners talk about missed call cost, and they aren't the same.
The conservative cost is the revenue from jobs you would have booked if you had answered. That's a missed spring repair, a snapped cable, an opener swap. One ticket, one invoice, one check.
The full cost is bigger. A garage door customer rarely buys one job over the life of the relationship. The same homeowner who calls about a broken spring at 7 AM might need an opener replacement in three years, a new door in eight, and refers the neighbor down the street next spring. Garage door customer lifetime value walks through the math — it's the number that makes missed calls look more painful, not less.
For most planning, the conservative number is what you should use. If even the conservative number makes the case for answering every call, the full number only sharpens it. We work the conservative version below.
The whole formula is three inputs:
If you don't have these, you can use planning figures that contractors often report. What's the average garage door repair job worth? walks through realistic ticket ranges. As a planning figure, a blended residential service ticket in the $300–$450 range covers most markets; shops that sell more openers or new doors run higher. A reasonable planning close rate for a real answered inbound call is 40–60% — some callers are price-shopping or just kicking tires, but a lot of them are ready to book.
For the missed-call count, the easiest source is your phone system. Cell carriers show missed calls. VoIP dashboards do too. Landlines expose them on the bill. If you don't have any of that, the kind of measurement we cover in how to check missed call count on any phone system gives you a starting point.
Monthly missed-call cost = missed calls × close rate × average ticket.
That's it. The whole argument in one line. The rest of this page is putting realistic numbers into it, accounting for the things owners forget to subtract, and showing the worked example you can copy.
Say your shop:
Cost: 15 × 0.50 × $375 = $2,812 a month.
That's the conservative number. It does not count the referrals, the second-door job two years from now, or the Google review you didn't get. It does not even count the price-shopper who would have called you back anyway. It's just the calls you missed, multiplied by the share that would have booked, multiplied by what an average job is worth.
If you miss 15 calls a month at those numbers, the year's total is roughly $33,750 in lost revenue. And that's only counting one call per missed-call slot — many shops find that the missed-call log undercounts, because the calls you don't know you missed never even ring twice.
Now run the same formula with the kind of numbers contractors often report when they look honestly at their logs. Say you miss 30 calls a month (closer to what a busy one-truck shop measures), your close rate is 45% (slightly more conservative), and your average ticket is $425 (a market that does a fair amount of opener work). Cost: 30 × 0.45 × $425 = $5,737 a month. That's nearly $69,000 a year from the conservative math alone.
Three things push the true cost above the formula's number.
One: a missed call is more likely to be a real job than an average call. The caller who hit voicemail wasn't the price shopper — that person usually calls three shops, gets one live answer, and books. The voicemail caller was often a bottoms-up-funnel caller: broken spring, car trapped, opener dead. The intent is higher. If your answered-call close rate is 50%, your missed-call close rate, if you'd picked up, would likely run higher.
Two: the lifetime value cuts both ways. A booked job today is also a service relationship for years. The cost you lose on a missed call is the next job you never get, and the next one, and the neighbor referral. We size this in the lifetime value of a garage door customer. If your average customer's lifetime value is $1,200, even multiplying that by the share of missed calls that would have booked produces a much larger number than the first-job ticket alone.
Three: some calls leave no trace. A homeowner who gets voicemail, hangs up, and calls the next company never rang twice. Your missed-call log doesn't show them. We cover the share of those calls and how to estimate them in not every missed call is a lost job, but the practical point is: the formula's number is a floor, not a ceiling.
The formula is only as honest as the missed-call number you feed it. Three ways to get it:
For a one- to two-truck shop, a planning figure of 10–30 missed calls a month is the range most owners measure once they start counting. The real way to find your own number is tracking missed calls in your garage door business — five minutes a day for a week gives you a number you can actually use.
The instinct is to think "we don't miss many — the phone rings and someone picks up." A few patterns fight against that instinct:
We unpack the moments a shop is most likely to miss calls in where contractors miss calls. The headline finding: most shops, once they start counting, are missing more than they assumed.
Now compare the formula's number to the cost of answering every call.
A full-time receptionist in the US typically runs $30,000–$40,000 a year all-in (salary, taxes, benefits), covers about 40 of the 168 hours in a week, and still misses calls when they're on break, sick, or away from the desk. A traditional live answering service might run a few hundred dollars a month with per-minute billing that climbs during busy weeks, and the operator takes messages instead of booking the job.
Ava is $97 for the first month, then $297/month flat, unlimited calls, no contract. No per-minute surcharges during storm weeks. No extra bill the month your call volume doubles. Coverage for every hour of the year, not just the ones a person is on the clock.
If your conservative monthly missed-call cost is $2,800 and Ava is $297, the math favors coverage by a factor of about nine to one. If your conservative number is $5,700, the factor is closer to nineteen to one. Even at the low end of planning ranges, the answer is the same.
For the deeper cost breakdown of how AI answering compares to live answering and in-house staff, see answering service cost comparison.
Don't trust the formula. Run the test:
Most owners find the ratio is wide enough that the answer isn't close. Some find it's not. Either way, you've replaced a vague feeling with a number you can defend.
The cost of missed calls for contractors is the most predictable line item on a P&L that nobody puts on the P&L. Three inputs — missed calls, close rate, average ticket — produce a defensible monthly dollar figure, and that figure almost always exceeds what it would cost to answer every call.
Ava answers 24/7, captures name, phone, address, and issue, books service windows, and texts you the summary. $97 first month, then $297/month flat. Unlimited calls. No contract. Cancel anytime. Backed by a 30-day "First 10 Leads On Us" money-back guarantee — if Ava doesn't capture your first 10 leads, you get your money back.
Run the formula with your numbers. If the answer is "we're losing more than $297 a month to missed calls," the next step is to hear what your customers would hear when they call.
Call the live demo and have Ava call you now — hear exactly what your customers will hear when they call your shop.