Agustine Gonzalez

AI Systems

Real-Estate AI Voice Agent - Vapi, Make.com & GoHighLevel

Designed an AI voice system using Vapi and OpenAI GPT-4o integrated with Make.com and GoHighLevel to handle real-estate lead calls, bookings, and CRM updates.

AI Voice Automation Engineer / Vapi & Make.com Developer

Real-Estate AI Voice Agent - Vapi, Make.com & GoHighLevel project preview

Business summary

  • Built an AI voice agent for inbound and outbound real-estate calls.
  • Automated lead qualification, scheduling, and CRM updates.
  • Improved response time and reduced manual call handling.
  • Enabled real-time appointment booking with calendar sync.

What I built

Built a Vapi-powered AI voice agent ('Riley') that manages real-estate conversations end-to-end, including property inquiries, lead qualification, appointment scheduling, and call transfers. Implemented custom Vapi tools that trigger Make.com scenarios for live GoHighLevel calendar availability checks, CRM appointment creation, Google Sheets logging, and automated call summaries.

Automated real-estate lead handling from first contact to booked consultation with minimal human intervention.

Architecture

A simple operating path with explicit ownership.

01Vapi voice agent layer (Riley)
02OpenAI GPT-4o reasoning engine
03Custom tool-calling layer (Vapi tools)
04Make.com workflow orchestration
05GoHighLevel calendar + CRM integration
06Google Sheets logging system
07Call reporting pipeline

Challenges

  • Maintaining natural conversational flow in voice interactions
  • Real-time calendar availability synchronization
  • Reliable tool execution during live calls
  • Handling interruptions and human call transfers

Results

  • Fully automated real-estate call handling
  • Faster lead qualification and booking
  • Reduced missed opportunities from inbound calls
  • Improved CRM data consistency

Tech Stack

Vapi
Make.com
GoHighLevel
OpenAI GPT-4o
AI Voice Agents
Webhooks
Google Sheets
Calendar APIs
CRM Automation
Real Estate Systems

Gallery

Real-Estate AI Voice Agent - Vapi, Make.com & GoHighLevel 0
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