Case study · Real estate
Grays VC: a WhatsApp assistant for realtors, from idea to production in 7 days
A portal for realtors with a WhatsApp bot, voice-to-text and a curated daily brief for their tasks. Scoped, built and running in production within a week.
- Timeline
- 7 days
- Investment
- €6,000 – €9,000
- Stack
“Within a week we had something running that we'd been putting off for months. The team understood the problem on the first call.”
The problem
Grays VC's realtors worked like most of the industry: voice notes, scattered messages and tasks lost between conversations. The information existed — but it lived in WhatsApp, unstructured, and nobody had a clear view of what needed to happen each day.
What we built
An internal portal connected to a WhatsApp bot: the realtor sends a voice note or a message, the system transcribes it with Deepgram (voice-to-text), structures it and turns it into tasks. Every morning, a curated daily brief gives each realtor what matters: pending items, follow-ups and updates.
The stack: Next.js for the portal, n8n for automation orchestration, Neon (Postgres) as the database and Vercel for deployment. No infrastructure to maintain.
How we did it in 7 days
The scope was locked on the first call: one main flow, done well, instead of ten half-finished ones. Days 1–2: discovery and flow design. Days 3–5: build with partial deliveries the client could test same-day. Days 6–7: adjustments based on real feedback, then production.
That's the pattern of our Validation tier: a fixed scope of one main flow, 1–2 weeks, with the price range published upfront.
The result
Voice notes stopped dying in the chat: they're now structured tasks with follow-up. The daily brief killed the "what's on today?" question — and the system runs on its own, with nobody operating it.
Want to see how we run a project like this from the inside? It's told step by step in how we work.