Who wrote this: Vantage Growth Partners, an agency that sells an instant lead response and missed-call text-back system. The dataset is our own; the methodology section at the bottom says exactly what it does and does not measure. The cost arithmetic uses your numbers, not invented industry averages.
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The arithmetic, with your numbers
You will find plenty of pages quoting an "average cost of a missed call". Ignore them; the honest version is three numbers you already have. First, your average job value. Second, how many calls went unanswered on your phone log last week, most tradespeople who actually check are surprised, because the misses happen exactly when you are working. Third, how many of those callers would realistically have booked, remembering that someone ringing a roofer during a leak is not browsing.
missed calls per week × share who would have booked × average job value × 52 = what going to voicemail costs you a year.
A purely illustrative example, swap in your own figures: a heating engineer averaging £300 a job who misses 5 calls a week, where even 2 of the 5 would have booked, is leaving £600 a week on the table, roughly £31,000 a year. Halve every assumption and it is still a number worth fixing. The point is not our example; run yours.
And the cost is not only the lost job. The same caller who got your voicemail books your competitor, leaves them the Google review, and refers them the neighbour. Which is where our data comes in, because the average trade business has far less review cover to absorb that loss than it thinks.
What 671 West London trade businesses look like online
In June and July 2026 we built a research database of 4,697 unique West London local businesses across 20 areas, plus a deeper 1,019-listing sweep of the Brentford TW8 corridor. Filtering the TW8 data to trades only (roofing and drainage, lofts and extensions, HVAC and air conditioning, heat pumps and solar) leaves 671 businesses. Here is how they present to a customer searching Google:
10
Median Google review count
vs 76 across 4,331 reviewed West London local businesses of all kinds
48.4%
Fewer than 10 reviews
325 of 671 trade businesses
14.9%
Zero reviews at all
100 of 671, one in seven
16.2%
No website
109 of 671
14.8%
Google profile unclaimed
99 of 671 never claimed their own listing
The comparison that should worry the trades: across the broader 4,331 reviewed West London businesses of every kind (salons, restaurants, dentists, garages, gyms), the median Google review count is 76. For trade businesses it is 10. Trades are, by a distance, the least-reviewed local category we measured, while selling some of the highest-value jobs. By niche:
| Trade niche | Businesses | Have a website | Median reviews | Under 10 reviews |
|---|---|---|---|---|
| Roofing & drainage | 197 | 78.7% | 6 | 56.9% |
| Lofts & extensions | 257 | 86.4% | 8 | 54.5% |
| HVAC & air conditioning | 142 | 81.0% | 28 | 34.5% |
| Heat pumps & solar | 24 | 95.8% | 28 | 29.2% |
Put the two halves together and the picture is stark. The typical trade business is competing for urgent, high-value, first-to-answer jobs with 10 reviews, roughly a one-in-six chance of having no website, and a one-in-seven chance its own Google listing sits unclaimed. Every missed call hands the job to a competitor, and the thin review profile means there is little pulling the next customer back to you. The leak compounds.
The fix, in order
1. Stop the bleed: answer every call, even when you cannot answer. A missed-call text-back system fires a text to any unanswered caller within seconds and keeps the conversation alive until the job is booked. You are on a roof; your phone is not. This is the highest-leverage single fix because it converts demand you already paid nothing to generate. (What we run for clients: instant lead response.)
2. Claim the Google profile and close the review gap. One in seven trade businesses in our data has not claimed its own listing, ten minutes of admin, and half sit under 10 reviews. A systematic, policy-compliant review ask after every job moves you from the invisible half to the visible few within months; the how is in our Google reviews guide.
3. Reactivate the customers you already won. Past customers are the cheapest jobs you will ever book, most trade businesses hold years of them in a phone and never message one. A database reactivation campaign turns that list into booked work with no ad spend.
Methodology, and what this data does not say
Two datasets, both built by us from public Google Maps listing data. First: 4,697 unique West London local businesses across 20 areas and 15 search categories, collected July 2026 and deduplicated by place. Second: 1,019 listings from a deeper sweep of the Brentford TW8 corridor, collected June 2026; the trade figures above use the 671 of those in roofing and drainage, lofts and extensions, HVAC and air conditioning, and heat pumps and solar. Review counts, ratings, website presence, phone presence, and unclaimed-profile status come straight from the listings. Where a listing had no review data (366 of the 4,697), it is excluded from review statistics, not counted as zero.
What this data does not measure: whether anyone answers their phone. No public dataset records that, which is exactly why the cost-of-a-missed-call arithmetic above uses your own phone log rather than a quoted industry percentage. The trade sample is one West London corridor, not a national census; treat the figures as a well-measured local snapshot. And this page is written by a vendor of missed-call systems, so check our reasoning, not just our numbers.
Questions this data gets asked
How much revenue does a missed call actually cost a trade business?
It depends entirely on your job value and how many calls go unanswered, which is why this article gives you the arithmetic instead of a made-up industry average. Take your average job value, count one week of missed calls on your phone log, assume a portion of those callers would have booked, and multiply. For most trades the resulting monthly number is uncomfortable, and it is specific to your business rather than a statistic someone invented.
Why do missed calls hit trades harder than other local businesses?
Urgency and substitutes. A leaking roof or a dead boiler cannot wait, so the customer works down a list and hires whoever answers first. Our West London data shows the average trade business also has a much thinner review profile than other local categories (median 10 reviews versus 76 across all types), so it has less pulling power to make a customer wait or call back.
What is missed-call text-back?
A system that fires an automatic text to any caller you fail to answer, within seconds, along the lines of "Sorry we missed you, how can we help?", then continues the conversation and books the job. It does not replace answering the phone; it stops the callers you physically cannot answer (on a roof, in a crawl space, driving) from moving to the next name on the list.
Is fixing missed calls enough on its own?
Usually not, and our data is the reason. Among 671 West London trade businesses, nearly half have fewer than 10 Google reviews and one in six has no website. If your online proof is thin, you get fewer calls in the first place. Answering everything is the fastest fix; reviews and a working web presence decide how many people call you at all.
Where does the data in this article come from?
From our own research database: 4,697 unique West London local businesses across 20 areas (Google Maps data collected July 2026) and a 1,019-listing deep dive on the Brentford TW8 corridor collected June 2026, of which 671 are trade businesses (roofing, drainage, lofts and extensions, HVAC, heat pumps and solar). Every figure on this page comes from those datasets, and the methodology section says exactly what the data does and does not measure.
Want to know your own numbers?
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