AI Receptionist for house extension builders
Every house extension enquiry answered. Every site survey booked. Zero missed £40,000 jobs.
Ava is the AI receptionist for house extension builders that answers every enquiry, captures extension type and budget, and books the site survey — 24/7.
Miss two house extension enquiry calls per week and you forgo £280,000–£440,000 in potential contract value every month — each one a four-month project that went to the builder who picked up.
The short answer
- £35,000–£55,000 extension enquiries are lost every day when the builder is on site and can't take a call — Ava answers on the first ring, regardless of what's happening on the ground.
- 3–4 months of pipeline is attached to each extension enquiry — a single-storey rear build fills a crew's schedule, so every missed call is a project the crew never starts.
- 5 platforms supported — Buildertrend, Tradify, Powered Now, BuildXact, and simPRO — with extension type, planning status, and budget logged against the survey booking in real time.
- £280,000–£440,000 in potential contracts can disappear in a single month from two missed enquiry calls a week — each one a project that went to whoever answered.
- 24/7 cover means evening and weekend enquiries — when homeowners research and ring — are captured rather than lost to a voicemail nobody checks until Monday.
The problem
You're pouring a concrete slab at 11am. The phone rings. It's a homeowner in a four-bed semi who wants a single-storey rear extension — exactly the kind of £35,000–£55,000 project that fills a crew for four months. You're up to your elbows in a wet mix. That call goes to voicemail.
What Ava does
Ava answers every inbound extension enquiry, captures the extension type, approximate size, and budget range, and books the site survey or initial consultation directly into your calendar — so high-ticket leads are never lost to a wet pour or a noisy dig.
A single-storey rear extension typically runs £35,000–£55,000. Miss two enquiry calls a week and you forgo £280,000–£440,000 in potential contracts every month.
How does Ava handle a house extension enquiry call?
Ava answers immediately, asks about extension type, size, planning status, and budget, then books the site survey from your live calendar and sends an SMS confirmation to the homeowner. The caller ends the call with a survey date locked in rather than a callback promise.
The questions Ava asks mirror the ones you'd ask yourself before making the drive: is it a rear, side-return, wrap-around or over-garage? What floor area are they thinking? Do they have planning approval or is it likely permitted development? What's a rough budget? That information travels with the booking so you arrive at the site survey prepared.
Builders in this sector typically lose the most enquiries during concrete pours, roof work, and groundwork phases — the noisiest, most hands-on parts of any build. Ava is the solution to that specific gap: she runs all day, every day, without needing a quiet moment.
Every lead that comes through Ava is pushed to your job management software as a structured summary. In Buildertrend or BuildXact it appears as a new prospect with site address, project scope, and planned survey date attached — no rekeying, no sticky-note system.
Why do extension builders lose so many high-value enquiries?
Builder is on site, crew is loud, hands are dirty — the phone rings and nobody answers. A £40,000 extension enquiry hits voicemail, the homeowner dials the next builder on Google, and that builder answers. The lead is gone in 90 seconds. It never shows up in your missed call log because the caller didn't leave a message.
An extension project fills a crew for three to four months. The enquiry call that converts it is often a single opportunity, because a homeowner comparing builders books with whoever speaks to them first. A voicemail, however politely worded, tells them you're too busy — and they believe it.
The damage is invisible. You don't know the call happened, so you don't know the project went elsewhere. You only see it months later when the same house in your service area has scaffolding up from a competitor. By then there's nothing to do.
Ava solves it at the source. Every ring is answered. Every enquiry is captured and confirmed with a site survey date. The builder stays on the job while the lead lands in the pipeline.
Does Ava integrate with builders' job management software?
Yes. Ava pushes structured lead summaries into Buildertrend, Tradify, Powered Now, BuildXact and simPRO. The booking writes in real time so the lead is visible in your pipeline the moment the call ends, with project type, postcode, budget and survey date attached.
The integration is two-way for calendar access: Ava reads your available slots and only books times that are genuinely free. When the survey is confirmed, the appointment lands in your software tagged with the correct project type and the lead's contact details.
For teams running a simple diary rather than full job management, Ava books into a shared Google or Outlook calendar and pushes a structured email summary so nothing is missed and nothing requires manual entry.
Every call is logged, so your conversion data is clean. You can see which enquiry sources convert to booked surveys, how many calls came in this week, and how many became pipeline jobs — metrics that are impossible to track when calls go to voicemail and there's no record.
What should a house extension builder look for in a call answering service?
Look for a service that books the site survey in the same call rather than promising a callback. Extension enquiries are competitive; the builder who gets a survey on the calendar is usually the one who wins the contract. The service also needs to capture project detail, not just a name and number.
A generic answering service takes a message. That message joins a callback queue while the homeowner calls the next builder and books with them instead. You need the call handled so the survey is booked before the caller hangs up.
Project detail matters at the survey. Turning up without knowing whether it's a rear or side-return, or whether they have planning approval, wastes the visit. A good call handler captures that context and passes it with the booking.
Building regulations, party wall agreements, and structural assessments will come up in every extension conversation. Your call handling needs to route those questions to the site survey or consultation without the AI ever crossing into advice. Ava books and captures; you advise.
£35k–£55k
Typical contract value for a single-storey rear house extension
UK builders industry estimate
48 hrs
Typical Ava go-live time for a new builder account
avacallai service definition
24/7
Hours Ava answers inbound extension enquiries
avacallai service definition
The difference
Voicemail takes a message. Ava books the appointment.
What callers ring about
Every house extensions call, handled.
- Single-storey rear extension enquiries
- Side-return extension site surveys
- Wrap-around extension consultations
- Planning permission timeline questions
Hear it in action
This is what your callers hear.
- Good morning, Hallmark Extensions — how can I help?
- Hi, we're looking to add a single-storey rear extension to our kitchen, roughly 4 by 5 metres.
- That sounds like a great project. Do you already have planning approval, or is that something you're looking for guidance on at the site visit?
- We think it might be permitted development actually, but not sure.
- Our surveyor can walk through that with you on site. Can I book a site survey for you this week? I have Thursday afternoon or Friday morning available.
Before you choose
What to look for in an AI receptionist for house extensions.
Books the site survey in the same call
A callback promise loses the lead. The service must access your calendar and lock in a survey date while the homeowner is on the line. Anything less lets the competitor who answered later steal the job.
Captures project context, not just contact details
Extension type, dimensions, planning status, and budget travel with the booking. Without that context, every site visit starts from scratch and wastes your time.
Process claims only — no planning advice
The service must book and capture enquiries without advising on permitted development, building regulations, or structural matters. Confirm where that boundary sits before you go live.
Integrates with your job software
Leads should appear in Buildertrend, Tradify or your system the moment the call ends — not in an email chain you need to manually enter. Check the integration is live, not a daily batch.
Common questions
Everything you’re wondering.
Can Ava book site surveys for house extension enquiries?
Yes. Ava captures the extension type, approximate dimensions, and the homeowner's timeline, then offers available slots from your calendar and confirms the site survey booking by SMS.
What information does Ava capture from a house extension caller?
Extension type (rear, side-return, wrap-around, over-garage), approximate size, planning permission status, rough budget, postcode, and preferred contact time. All sent to you as a structured summary.
Does Ava give advice on planning permission requirements?
No. Ava captures the nature of the project and books the site survey or consultation — she never advises on planning, structural matters, or building regulations.
Can Ava handle calls when the whole crew is on site?
Yes. Ava operates 24/7 with no downtime. Whether you're three hours into a groundwork dig or mid-pour on a slab, every call is answered and every high-value lead is captured.
Will Ava log enquiries into our job management software?
Yes. Ava can push a structured job summary into Buildertrend, Tradify, Powered Now or BuildXact, so the lead appears in your pipeline the moment the call ends.
How does Ava handle a caller who doesn't know their budget yet?
She captures the project description and books the site survey, framing the visit as the point where you can assess scope and provide an accurate quote. Most callers are comfortable with that approach.
Can Ava deal with calls about permitted development versus planning applications?
Ava can confirm that you handle both permitted development projects and those requiring planning approval, and book the appropriate consultation. She does not advise on whether a specific project needs planning permission — that determination stays with the builder and the planning authority.
How quickly can Ava go live for my extension business?
Typically within 48 hours. We train Ava on your project types, service area, lead qualification questions, and calendar, then test against real enquiry scenarios before she takes a live call.
Pricing
Ava pays for herself on call one.
A single-storey rear extension typically runs £35,000–£55,000. Miss two enquiry calls a week and you forgo £280,000–£440,000 in potential contracts every month. Plans from £397/mo. One recovered job a month covers it — everything else is pure upside.
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