The real cost of a missed call for a one-van trade

Setting up the example

Meet a made-up plumber. Call him Ray. Ray works alone, drives one van, and gets about twenty-five inbound calls a week from a mix of Google, his website, a directory listing and people who got his number from a neighbour. None of these figures are from a real business; they are chosen to be plausible and to make the sums easy to follow.

Ray answers about sixty per cent of calls when they ring. The rest go to voicemail, and he rings back when he can, usually within two or three hours. Of the calls he misses, roughly half have found someone else by the time he calls back. The other half wait for him.

The arithmetic, step by step

Twenty-five calls a week, forty per cent missed, is ten missed calls. Half of those lost for good is five lost enquiries a week.

Not every enquiry is a job. Say Ray converts half of the enquiries he does speak to, because some are price-shopping, some are outside his area and some want a job he does not do. Five lost enquiries at fifty per cent is two and a half lost jobs a week.

Now a value. Ray's jobs range from a £90 tap washer to a £3,500 bathroom. Say his average invoice is £320. Two and a half jobs a week at £320 is £800 a week. Over a forty-six week working year that is £36,800 of invoiced work that rang his phone and went elsewhere.

Change any of these inputs and the total moves, which is the point of a worked example. Halve the miss rate and the loss halves. Double the average job value, as a kitchen fitter or a roofer might, and it doubles.

Summary of the example

Input	Value used	Effect
Inbound calls per week	25	Starting point
Share missed	40%	10 missed calls
Share of missed that go elsewhere	50%	5 lost enquiries
Enquiry to job conversion	50%	2.5 lost jobs
Average invoice	£320	£800 lost per week
Working weeks	46	£36,800 lost per year

Why the homeowner does not wait

The lost half is the figure people argue with, so it is worth saying why it is probably not generous. A homeowner searching for a plumber has a list in front of them. Your profile was one of three in the map pack. If you do not answer, the next tap is the second name on the list, and the only effort involved is moving a thumb.

Emergencies are worse. A burst pipe does not wait two hours for a callback. And the directory leads Ray pays for are often sent to several trades at once, so the first to answer wins by default.

The fixes, ranked by cost and effort

Every fix below reduces either the miss rate or the share of missed callers who go elsewhere. Which one suits a trade depends on how the calls arrive and what the jobs are worth.

Fix	What it changes	Cost	Effort
Missed call text back	Caller gets an instant text saying you will ring back, often with a link to book or describe the job	Low monthly fee or built into phone systems	Setup once
Voicemail that sets a time	"I will call back by 1pm" keeps more callers waiting than a generic greeting	Free	Ten minutes
WhatsApp as the second channel	Homeowners who get no answer send a photo instead of ringing the next firm	Free	Habit change
Shared answering with another trade	Two sole traders cover each other's phones in agreed hours	Free, needs trust	Ongoing
Answering service	A person answers in your business name and takes details	Monthly fee, per call or per minute	Low once set up
Online booking for standard jobs	Boiler services and the like get booked without a call	Software fee	Setup and maintenance

Running the example again with one fix

Suppose Ray adds a missed call text back and improves his voicemail, and the share of missed callers who go elsewhere drops from half to a quarter. Lost enquiries fall from five a week to two and a half, lost jobs to one and a quarter, and the annual figure to £18,400. One cheap change has, in this example, kept £18,400 of work that was already ringing him.

Add an answering service in working hours and the miss rate itself falls. If it drops from forty per cent to fifteen, the loss shrinks again, and the service's fee is set against a number Ray can now actually see.

The method matters more than the result. Trades spend on ads and directories to make the phone ring, then lose a chunk of what rings. The order should be the other way round, which is why the question of response time sits at the centre of our piece on Meta lead forms versus landing pages.

Doing the sum for your own business

You need four numbers: calls per week (your phone's call log has it), share missed (same place), average invoice (your accounts), and a guess at conversion. For the share of missed callers who vanish, ring back every missed number for a fortnight and count how many have already booked someone. That gives you a real figure instead of our fifty per cent.

Once you have the annual loss, every fix in the table has a price you can compare it with. Most trades find the first two fixes pay for themselves in the first week they would have missed a call. For the wider question of how the phone fits into how homeowners choose, see what homeowners actually check before they ring a tradesperson, and for the channel many use instead of ringing, our guide to WhatsApp Business for trades.

Frequently asked questions