What missed calls really cost a home services firm

Why the cost stays hidden

A missed call leaves no invoice, no complaint and often no voicemail. The caller simply rings the next number on the search results page, and the job you never heard about is booked by someone else. Because nothing shows up in the accounts, most owners underestimate the problem until they count it.

This guide sets out what a missed call actually costs a heating, electrical, roofing, cleaning, pest control or gardening business, how to measure it in your own firm, and which fixes are worth paying for at different sizes.

Why calls go unanswered in small trade firms

The structure of the industry makes missed calls almost inevitable. At the start of 2026 an estimated 74% of UK private sector businesses had no employees other than the owners^[1]. Among firms that do employ people in electrical, plumbing and installation work, 88.9% have between one and nine staff^[2]. In a business that size the person most likely to pick up the phone is also the person with their hands inside a boiler casing or a consumer unit.

Calls cluster at the worst times. Homeowners ring before work, at lunch and in the early evening, which overlaps with first visits of the day, travel between jobs and the end-of-day rush to finish. A sole trader on the tools can easily miss a third of calls on a busy day without doing anything wrong.

The four costs of a missed call

It helps to split the cost into parts, because each has a different fix.

The first cost is usually the largest. The third is the one owners feel most, because it eats into family time. The fourth builds slowly and is hardest to reverse.

Example: a five-van multi-trade firm

Example. A fictional firm runs five vans doing heating, electrical and general repairs. The owner logs every inbound call for two weeks and finds the following, which we use to show the method rather than as a benchmark.

1. Example: 80 inbound calls a week, of which 18 go unanswered.
2. Example: when the owner rings the 18 back, 7 turn out to be new enquiries, 6 are existing customers, and 5 are suppliers, sales calls or wrong numbers.
3. Example: of the 7 new enquiries, 3 have already booked someone else by the time the callback happens.
4. Example: the firm normally wins about half of the new enquiries it quotes for, and its average first job is worth £280.
5. Example: 3 lost enquiries a week at a one-in-two win rate is 1.5 lost jobs, or about £420 of first-job revenue each week.

Example, continued. That figure ignores the follow-on value. A heating customer who books a repair often comes back for an annual service, and a landlord who likes your response may send several properties. If even one lost customer a month would have become a regular, the annual cost is several times the first-job figure.

What your time is worth when you call back

Callbacks feel free because nobody invoices you for them. They are not. Median full-time pay gives a sense of what an hour of trade time is worth before you add van costs, overheads and margin^[3].

Example. If an electrician spends 50 minutes each evening returning calls, at a median rate of £19.54 an hour^[3] that is about £16 of time a day, or over £80 a week, before counting the cost of the jobs that were already gone. For an owner the real figure is higher, because the time competes with quoting, invoicing and rest.

High-value enquiries change the maths

The size of the job matters more than the number of calls. The median cost of an air-to-water heat pump installed under the Boiler Upgrade Scheme was £12,826 in July to September 2026, including the grant^[4]. A heating firm that misses one of those enquiries a quarter has lost more revenue than many small firms would spend on a year of call cover.

The same logic applies to rewires, roof replacements, regular commercial cleaning contracts and annual garden maintenance agreements. Look at your last twelve months of invoices and find your top ten jobs by value. Ask how each of those customers first got in touch. If most of them rang, every missed call carries a small chance of being one of them.

Firm size also shapes how much a few lost jobs hurt. The largest turnover band for registered plumbing, heating and air-conditioning businesses is £100,000 to £249,999 a year, covering 19,630 firms^[5]. At that scale, a handful of lost jobs a month is a noticeable share of income.

How to measure your own missed-call rate

You do not need software to get a reliable picture. Two weeks of honest logging is enough.

1. 01

   Pull the call log

   Most mobile networks and business phone apps list missed calls with times. Export or screenshot them daily so nothing is lost when the list rolls over.

2. 02

   Tag every missed call

   When you call back, mark each as new enquiry, existing customer, supplier, or nuisance. Note whether the person had already booked elsewhere.

3. 03

   Note the time and what you were doing

   On a roof, driving, with a customer, or off duty. This shows which fix fits: a ring group, office cover or out-of-hours cover.

4. 04

   Count the lost enquiries

   Add up new enquiries who had already booked someone else or did not answer your callback.

5. 05

   Apply your own win rate and job value

   Use last year’s figures, not hopes. Multiply lost enquiries by your win rate and by your average first job value.

6. 06

   Repeat after any change

   Run the same two-week log after you change how calls are handled, so you can see whether the fix worked.

Which fixes suit which firm

There is no single answer. The right fix depends on when calls are missed and who misses them.

• Sole traders who miss calls mostly while working at height or driving should start with safer call habits and a better greeting; see our guide to answering calls when you are up a ladder and the rules on taking calls while driving.
• Firms whose callers give up before a callback should tighten their return times; our guide on how fast to return missed calls sets out a daily routine.
• Firms where most missed callers leave no message usually need a clearer voicemail greeting that tells people what to say and when they will hear back.
• Seasonal businesses, such as gardeners in spring, should plan cover for the weeks when calls spike rather than all year; see planning for the spring rush.

When your log shows lost new enquiries adding up to real money, cover stops being a nice-to-have and becomes a business decision. The options range from a part-time office hand to a human answering service or an AI Employee such as Ava, which answers calls, takes the job details and puts urgent call-outs through to whoever is on call.

Do not forget existing customers

New enquiries are easy to count, but missed calls from existing customers carry their own risk. A customer who has used you for three years and cannot get through during a breakdown is in a worse position than a stranger: they trusted you to be there. Some will wait, some will ring a competitor and quietly move their annual service.

• Save your regular customers and landlord clients as named contacts, so you can see at a glance when one of them has rung.
• Return calls from existing customers with an open job or a recent visit first; they are often reporting a problem with your work.
• Check the log for any regular who rang more than once in a day. Repeated calls usually mean something urgent.
• If a regular has stopped booking, ask them why. A short, honest conversation often reveals a missed call you never knew about.

A quick decision rule

If your two-week log shows fewer than one lost new enquiry a week, focus on faster callbacks and leave the rest. If it shows several a week, or if your average job value is high, put a monthly value on those lost jobs and compare it honestly with the cost of the cover options available to you.