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Sole trader plumber

The missed call that was costing a plumber every job

A one-man plumbing business was losing work to voicemail while his wife fielded enquiries. The fix was an AI employee running entirely through WhatsApp.

Trades & Construction2025AI Product

What came of it

  • Enquiries answered while he is on a job
  • Quote follow-ups sent automatically at 24 hours, 48 hours and 7 days
  • Review requests chased without him having to ask anyone
  • Google Business Profile active again after two years

How it went

Brief

Under a boiler, phone ringing

A sole trader plumber was missing calls while on jobs. His wife was fielding enquiries between her own work, and neither of them had time to chase anything afterwards.

Discovery

Every missed call was a lost job

There was no follow-up on quotes, no process for asking for reviews, and a Google Business Profile that had not been touched in two years. The enquiries were arriving — nothing was catching them.

Architecture

WhatsApp, because that is where he already was

An AI employee operating entirely through WhatsApp. No app to install, no dashboard to learn, nothing new to log into — the interface is the one already open on his phone all day.

Brand & Messaging

Found locally, and worth choosing

The Google Business Profile was brought back to life, a review process was put in place, and a simple website was built to support local search.

Build

Answering, chasing and briefing

WhatsApp AI wired into his calendar, with quote follow-ups going out at 24 hours, 48 hours and 7 days, review requests chased automatically, and a briefing waiting for him each morning.

Built withClaude APIn8nSupabaseWhatsApp APIElevenLabs
Result

Enquiries caught, quotes followed up, reviews arriving

Reviews started coming in, quotes that would previously have gone quiet converted, and the morning briefing became part of the routine.

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