The Revenue Cost of a Missed Call: UK Trades Job Values

The missed-call revenue model is a multiplication problem: missed calls × average job value = pounds walking out the door. That's it. Most conversations about "fixing your missed calls" jump straight to tools and technology. This one starts with what a single call is actually worth, because you can't do the maths without it.

Vague claims like "grow your revenue 20%" mean nothing if you don't know what one call is worth. A heating engineer who knows a new boiler averages £3,500 and an emergency repair runs £250 can work out their monthly exposure with a pencil in two minutes. Fifteen missed calls a month at a £250 blended average is £3,750 going to whoever answered.

This page sets out illustrative UK job values for plumbing, heating, electrical and related trades. They are working examples, not sourced statistics, so swap in your own figures wherever you can. Where a midpoint is used in a calculation, it is labelled as a midpoint, not a guaranteed average. For the complete home services statistics reference, including miss rate benchmarks, call volume data and speed-to-lead research, see the full data hub. For how often home service businesses miss calls, that data lives one page over and completes the calculation.

Plumbing job values vary widely by call type, from a quick leak fix to a full boiler replacement. The figures below are illustrative UK examples for working out your exposure. Replace them with your own prices where you have them.

Leak call-outs: Typically around £100–£250, depending on access and how quickly the leak can be traced and fixed.

Emergency boiler repairs: Around £150–£400 for many plumbing and heating businesses. Parts and out-of-hours attendance push jobs to the top of that range.

New boiler installations: Around £2,500–£4,500 fitted. For plumbers who also fit boilers, this is usually the biggest single job a call can lead to.

Out-of-hours work: Evening, weekend and bank holiday call-outs usually cost more than daytime work, so a missed emergency call is worth more than a missed routine enquiry.

Emergency plumbing calls are also the easiest to win. A homeowner with water coming through the ceiling is not comparing quotes. They ring round until someone answers, and the business that picks up first gets the job. That makes out-of-hours plumbing calls doubly costly to miss: higher value, and almost never retried once the caller finds someone who answered.

The PHCC (Plumbing-Heating-Cooling Contractors Association) tracks benchmarks for the plumbing trade in the US. In US data, their figures and IBISWorld's industry reports show average revenue per job rising noticeably when emergency and specialist work is included in the mix.

Heating has some of the highest-value calls in residential trades. The gap between a breakdown repair and a full boiler replacement is huge, so what a missed call costs you depends heavily on the season and the type of call.

Boiler servicing: Lower value per call, but steady volume, especially in late summer and autumn before the cold sets in. A missed service call can also mean a missed chance to spot an ageing boiler that needs repair or replacement.

Emergency boiler repairs: Around £150–£400 as an illustrative UK figure. Faults needing parts or out-of-hours attendance sit at the higher end.

New boiler installations: Around £2,500–£4,500 fitted by a Gas Safe registered engineer. System upgrades, flue changes or moving the boiler push the cost higher.

Out-of-hours premium: Breakdown calls during a cold snap often come in evenings and weekends, and usually cost more than a standard daytime visit. A household with no heating or hot water in January is calling until someone answers.

In US data, the ACCA (Air Conditioning Contractors of America) notes that revenue per service job varies by region and equipment age, and that average ticket values rise when emergency and replacement calls are included in the mix.

Electrical work sits between frequent, smaller plumbing calls and high-value boiler replacements. Consumer unit upgrades and rewires are among the highest-value single calls in residential trades.

Fault-finding and small works: Socket, switch and lighting jobs are lower value individually, but they often lead to bigger work once an electrician is on site.

Consumer unit upgrades: Around £500–£1,000 as an illustrative UK figure. An old fuse board with repeated faults is often flagged for replacement rather than patch repairs, which moves the job into a much higher bracket.

Full rewires: Around £3,500–£7,000 for a typical home, depending on size, access and how much making good is needed.

Emergency electrical calls: Same-day or out-of-hours work, such as a tripping RCD, a burning smell from a socket or total power loss, usually carries a premium over standard daytime rates.

Per home services industry employment and wage data, electricians are among the higher-paid skilled trades in US data. In the UK, customers increasingly look for NICEIC or NAPIT registration, and registered electricians can price accordingly.

A single missed consumer unit enquiry at the midpoint of the £500–£1,000 range is £750 in potential lost revenue. For a business taking 15 calls a week and missing 3, the monthly exposure runs roughly £1,800–£9,000 depending on the call mix.

The missed-call problem goes well beyond plumbing, heating and electrical. Related trades have job values that make every unanswered call just as costly, or more so.

Roofing: Roof repairs run around £300–£1,500 as an illustrative UK figure, depending on access, scaffolding and materials. After a storm, roofers get a rush of calls, and a missed enquiry usually goes straight to the next roofer on Checkatrade or Google.

Builders: Extensions, renovations and structural work are usually quoted after a site visit, so a single missed enquiry can mean a whole project lost to a competitor.

Drainage: Blocked drains and sewage backups are urgent. Customers ring round until someone answers, and drainage work often leads on to CCTV surveys and repairs, so each missed call can be the gateway to a bigger job.

Locksmiths: Lower value per call, but extremely time-sensitive. A customer locked out of their home is calling every number on the list and goes with whoever picks up first.

The pattern is the same in every trade. Speed of answer wins the job. A roof leak after a storm, a blocked drain on a Sunday, a lockout at 10pm: the business that answers first doesn't need to be better. It just needs not to be voicemail.

Your monthly missed-call revenue estimate comes from a three-step calculation. Here's the method, with the assumptions stated so you can adjust it to your business.

Step 1: Count your monthly missed calls. Pull your voicemail, call history and any out-of-hours calls for a full calendar month. If you don't have that data yet, see how often home service businesses miss calls for miss rate benchmarks by trade and business size.

Step 2: Apply your blended average job value. Use your own job history if you can. Otherwise, pick a figure that reflects your real call mix, not the top end. These are example inputs only, not guaranteed averages:

• Plumbing, general mix: £150–£300 per job
• Heating, repairs and servicing only: £150–£400 per job
• Heating, including boiler installs: £300–£600 per job
• Electrical, general mix: £150–£400 per job
• Roofing, repair mix: £300–£1,500 per job

Step 3: Multiply. Missed calls per month × blended average job value = monthly revenue at risk.

Example with stated assumptions: A plumbing business that takes 80 calls a month, misses 15% of them (12 calls), and has a blended average job value of £250: 12 × £250 = £3,000 a month in potential lost revenue.

This assumes all 12 missed callers had a real job and none were successfully called back. In practice, some callers do ring again, but speed-to-lead research consistently shows that answering first matters: the business that answers or responds within minutes wins the job far more often than one that rings back an hour later.

This is a way to estimate your exposure, not a revenue promise. Adjust the inputs to match your call volume, mix of work and local competition. When you're ready to act on your number, book a setup call and stop losing that revenue.

The UK job values on this page are illustrative working figures, not sourced statistics. Use your own prices wherever possible. The sources below are US industry bodies and data, referenced for context only; their figures describe the US market, not the UK.

• PHCC — Plumbing-Heating-Cooling Contractors Association (US plumbing industry benchmarks): phccweb.org — accessed 2026.
• ACCA — Air Conditioning Contractors of America (US heating and cooling industry data): acca.org — accessed 2026.
• IBISWorld — Plumbing, Heating, Air-Conditioning Contractors (US revenue and market size data): ibisworld.com — accessed 2026.
• U.S. Bureau of Labor Statistics — Occupational Employment and Wage Statistics (US electrician, plumber and heating technician wage data): bls.gov/oes — accessed 2026.