The call that came in while you were under a sink.
You cannot answer the phone with your hands full and your head in a cupboard. So it rings out, and by the time you call back that evening the customer has already booked someone else. This is the system that answers instead of your voicemail.
The two calls you are actually losing
There are only two, and they are different problems.
The one that comes in mid-job. You are under a sink, in a loft, or halfway through a bathroom. The phone goes. You cannot stop, so it rings out. You get to it three hours later and they have moved on. Nobody leaves a voicemail any more, so you do not even know what the job was worth.
The one that comes in at 11pm. A pipe has gone and there is water coming through a ceiling. That caller is not shopping around on price. They are ringing every plumber in the search results until somebody picks up. Whoever answers gets a job that pays for the week, and the rest of you never know the call happened.
The second one is why plumbers are the clearest case for this of any trade I work with. An emergency call after hours has a value and an urgency that a 10am enquiry does not, and it is the one you are least likely to be awake for.
What it does on a plumbing call
- Works out if it is an emergency. Burst pipe, no water, leak coming through a ceiling, no heating in winter. Those get treated differently from a quote for a new bathroom, and you decide what the difference is.
- Wakes you only when it is worth waking you. A genuine emergency rings your mobile with the details already gathered. A quote request goes in the diary for the morning. You set the rule, not the software.
- Gets the address and the access details. Where, what floor, is the stopcock reachable, is anyone home. So when you do call back you are not starting from nothing.
- Books routine work into your calendar. Real availability, real slots, confirmed by text while they are still on the phone.
- Tells people what you do not do. If you do not touch gas, or do not cover their postcode, it says so on the call instead of booking a job you have to cancel.
Will customers hate talking to it?
Some will, and it is worth being straight about that rather than pretending otherwise.
What I see in practice is that people mind far less than owners expect, because the alternative they are comparing it to is not a friendly human. It is voicemail. Someone standing in two inches of water at 11pm does not want a warm conversation, they want to know a plumber is coming and roughly when. If they get that in ninety seconds, they do not much care what answered.
Where it does go wrong is when a system pretends to be a person and gets caught. I build these to say plainly that they are an assistant if anyone asks, and to hand over to you the moment a caller is upset or the situation is not routine. Getting caught lying loses the job. Being useful does not.
How it gets built
Discovery, design, testing, launch, support. Most voice builds are answering real calls inside two to three weeks. I test against real scenarios before it takes a single live call, because the failure that matters is not a clumsy sentence, it is a booking that never reached your diary.
It runs on Vapi, Twilio and ElevenLabs, wired into whatever calendar and CRM you already use, in accounts you own. You see the tool costs before we start, and you can cut my access the day handover is done.
When I would tell you not to bother
If you are booked out for six weeks and turning work away, this solves a problem you do not have. Answering more calls you cannot service is not an improvement.
If your work comes almost entirely from one or two builders or letting agents who ring you directly, you do not need this either. You need a phone you answer for two numbers.
It is worth it when you are taking cold calls from search or from a directory, when a missed call is a lost customer rather than a rescheduled one, and when the after-hours ones are going nowhere. That is most one-van and small-team outfits, but it is not all of them.
Common questions
Will my customers get annoyed talking to a bot?
Less than you would expect, because what they are comparing it to is your voicemail, not a receptionist. The ones who mind are usually the ones who feel misled, so it says it is an assistant when asked and hands over to you as soon as someone is upset or the call is not routine.
I only get a few calls a day. Is it worth it?
Often yes, and for a reason that surprises people. If you take four calls a day and miss one, that is one lost job a day. At plumbing job values, missing even a few emergency callouts a month costs more than the system does. Low volume does not mean low value, and I will do that arithmetic with you on the audit rather than guess.
Can it tell a burst pipe from someone wanting a quote?
Yes, and this is the part worth getting right. You define what counts as an emergency and what happens to each type. A burst pipe can ring your mobile at 2am with the address already taken. A bathroom quote waits until Monday. It is your rule, not a default.
Can it give people a price?
It can give a callout fee and an hourly rate if you want it to, and it can say what a common job usually runs to. It should not be quoting a full bathroom over the phone, and I would not build it to. It gathers what you need to quote properly and books the visit.
What happens when I am on a job and it needs me?
Nothing interrupts you unless you have said it should. Everything else is waiting for you in a summary when you get in the van: who called, what they needed, what was agreed, what needs you.