Book Property Viewings with Google Calendar and Gmail Reminders

📋 HOW IT WORKS • Your website form posts a viewing request (name, email, listing, date/time) to the webhook • The request is checked against your opening days, hours and minimum notice (invalid requests get clear HTTP 422 messages) • Google Calendar availability is checked with a travel buffer • Free slot: the event is created, logged in Google Sheets and the buyer gets a confirmation email (you in BCC) • Busy slot: the three closest free times are emailed to the buyer and returned to the form (HTTP 409) • Every hour: buyers whose viewing starts within 24 hours get a reminder ⚙️ SETUP STEPS • About 15 minutes: create a Google Sheet with a "Viewings" tab (columns below), import the workflow, connect Google Calendar, Gmail and Google Sheets, fill the Config node (Sheet ID, calendar ID = your Google email, time zone, hours, durations), publish and point your form to the webhook URL • Requires n8n 2.x (Cloud or self-hosted) and a Google account. No community nodes, no API keys ℹ️ ADDITIONAL INFORMATION • "Viewings" tab header row: Viewing ID,Listing Ref,Buyer Name,Buyer Email,Buyer Phone,Start,End,Status,Calendar Event ID,Reminder Sent At,Feedback Rating,Feedback Comment,Created At • Configurable: viewing length, travel buffer, opening hours, working days, minimum notice, number of alternatives, reminder window • No credentials or personal data inside; sticky-note documentation in the workflow • Tested on n8n 2.41 with an automated test suite and a live run on real Google Calendar, Gmail and Google Sheets • Part of the Real Estate Automation Kit (5 workflows) by the same seller