Build a Real Estate Lead Qualifier AI Voice Agent | n8n + Vapi Beginner Tutorial
#Tamas Farago | Wemo AIMay 13, 2025
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This tutorial demonstrates how to build a powerful AI lead qualifier voice agent that automates the sales process from start to finish. You'll learn to create a system that evaluates leads based on a form submission and then uses a Vapi AI voice agent to call them automatically if they meet your specific criteria. While this video focuses on the real estate niche, the workflow is highly customizable and can be adapted for any business.
The video provides a step-by-step guide to building this automated system, covering the following:
How the Workflow Works: An overview of the entire process, from form submission to a follow-up call, with all data logged in a Google Sheet.
n8n Workflow Setup: A detailed walkthrough on creating two separate n8n workflows: one to trigger the initial call and another to handle post-call events.
Vapi Integration: Learn how to connect your Vapi AI agent, configure its assistant ID and system prompt, and integrate it with your n8n workflow to initiate an automated call.
Google Sheets Integration: Instructions on how to log lead data, including call transcripts and summaries, directly into a Google Sheet.
Conditional Logic: Use n8n's "if" nodes to qualify leads and decide whether or not to initiate a follow-up call.
This is a comprehensive guide to building a voice AI solution that helps businesses respond to leads as soon as they are submitted, ensuring they never miss an opportunity.
Timestamps:
0:00 - Intro and How the System Works
2:07 - Creating the n8n Workflow (Typeform Trigger)
4:11 - Using LLM Chain to Qualify Leads
6:37 - Saving Lead Data to Google Sheets
8:08 - Creating a Web Call with Vapi AI
11:50 - Building the Post-Call Workflow (End of Call Events)
14:01 - Handling Multiple Messages in n8n
15:40 - Updating Google Sheets with Call Transcripts & Summary
