AI phone assistant for the trades: when the boss is up on the roof and the phone rings

Who it's for

Owners of trade businesses whose phone rings while everyone is on site or with a customer.

What you'll be able to do

Know what an AI phone assistant takes down on the phone, how it separates urgent cases from quote requests, where the enquiry has to end up afterwards and what it must not decide.

As of

October 2026

AI in the trades starts with the phone

Picture yourself up on a roof with the phone ringing in your jacket pocket. You can't answer, so the caller ends up on voicemail. You only find out in the evening whether they left a message. If nobody has time, the customer waits and eventually asks someone else.

That is the gap an AI phone assistant is meant to fill. It picks up when nobody at your business can, asks follow-up questions and records the request. The overview AI phone assistant for small businesses covers what such an assistant does in general, including for email and appointments. This post is only about businesses whose people are out during the day.

Two announcements from September 2026 show that AI is arriving on small firms' phone lines. On 8 September 2026 Telekom announced that, from 5 October 2026, business customers would be able to have calls summarised by AI. The summary turns into tasks and calendar entries, and the feature is aimed at small and medium-sized businesses.¹

Since 22 September 2026 sipgate has offered the basic version of its AI phone agent “sona” permanently free.² What that tier does and what it leaves open is covered in the post Free AI phone assistants.

I assume that in autumn, when the heating goes back on, many trades get more calls. I haven't measured it.

The call comes when your hands are full. The question is what has happened to it by the end of the day. Wherever no source is given, what follows is my assessment and recommendation.

What the assistant takes down on the phone

The overview lists four things an assistant takes down on the phone: name, callback number, request and urgency. In the trades I would make a fifth one mandatory: the address where the work is needed, meaning where the site is or where the damage is.

Without the address you can't plan a visit. You don't know how long the drive takes, who is nearby or whether the job is in your area at all. If one of the details is missing, the assistant asks for it before it hangs up.

At the start it says that an AI is speaking and which business it is speaking for. Why that belongs at the beginning is covered in the post on the labelling duty under Article 50. Whether and how the call may be transcribed or recorded is a separate question. For that, see the post Can the AI listen in on a phone call?

Without an address, an enquiry in the trades is just a phone number.

Emergency or quote request: the first fork

Broadly, two kinds of people call a trade business. Some have something broken that can't wait. Others would like a quote. In between are queries about a job that is already under way.

Each kind needs a different route. That is why, for me, sorting is the most important step after taking the details down.

You decide what counts as an emergency, not the assistant. For example: water is leaking, the heating has failed, a door won't close. Before you go live, write down which cases count in your trade, what the assistant says in those cases and who it passes the call to straight away.

In an emergency it only asks what has happened, where, and what number the caller can be reached on. It says that it will pass the report on straight away, to the person you have put in charge of emergencies.

With a quote request it has more time. It asks what work is needed, at what address and by when. It suggests a callback or a site visit, and the enquiry goes into your trade software as an entry.

You decide beforehand what an emergency is. The assistant only applies your rule.

Callback or site visit

Anyone who wants a quote wants to know what happens next. The assistant can offer two things: a callback, or an appointment for someone to look at the job on site.

For the site visit it needs rules from you: which time slots are open for visits and whose calendar they go into. If no slot fits, it falls back to a callback. I would make that the default anyway, because a callback always works.

To suggest a time, the assistant only needs to read the calendar. To add an appointment, it needs write access. How far that should go is covered in the post Securing AI agents: four questions.

It suggests the appointment. You settle on site whether it turns into a job.

Where the enquiry ends up: in your trade software

By trade software I mean the program you use to manage customers, quotes and jobs. That is where the enquiry belongs, with everything the assistant has taken down.

Whether and how your software can be connected depends on the software. That is the first question to ask before you start, even before choosing a phone provider. There is no list here of programs it works with, because I haven't tested any.

Why I think filing is the harder part is covered in the overview, in the section Where the request ends up: calendar, inbox, industry software.

A note in the inbox is not an enquiry in the system. Only the entry in your software saves you typing it in at night.

What it doesn't do: prices and promises

The assistant gives no price, not even a ballpark figure. It doesn't promise that someone will come out today. And it says nothing about warranty or invoices. In all of these cases it says that it will pass the question on, and to whom.

I would keep this strict. The Higher Regional Court of Hamm attributed a chatbot's false answers to the company running it.³ The judgment rests on German unfair competition law and concerns a chatbot on a website, not a phone assistant. The details are in the post When your chatbot gets it wrong, you said it.

A price on the phone is a promise. In the trades, the person who has seen the site makes it.

What it costs

The assistant itself doesn't have to cost anything. According to the provider, the basic version of sipgate “sona” is permanently free and includes 500 minutes a month.² All I know about what the basic version includes in detail comes from the provider's announcement. More on that in the post Free AI phone assistants.

The work is in the setup: writing down the emergency rule, setting the time slots and connecting the assistant to your software. The plan covers answering the call. The rules and the connection come from you. There is no price list for phone assistants here, because I don't have one that I have checked myself on the providers' pages.

AI for tradespeople: five questions before you start

What follows is my recommendation. The five questions can be answered without any technology, and whoever sets up the assistant needs the answers.

1. Which calls are an emergency for you?
2. Who takes the emergency, including in the evening and at the weekend?
3. Which time slots may the assistant offer for site visits?
4. Which software should the enquiry end up in?
5. What must it never say on its own?

The general questions for all sectors are in the overview AI phone assistant for small businesses.

Once you have written down these five answers, you know what the assistant is meant to do before you choose a provider.