Monitor Idealista rental prices and send Slack alerts with Google Sheets logging

Description

Monitor Idealista Rental Prices and Send Slack Alerts

Who is this for?

Apartment hunters, property managers, and relocation consultants who want instant Slack notifications when new rental listings appear on Idealista matching their exact criteria.

What this workflow does

Never miss a new rental listing on Idealista again. This workflow runs every 6 hours, scrapes the latest rental listings matching your exact criteria, detects genuinely new listings you haven't seen before, and sends Slack alerts with price, size, location, and a direct link.

This workflow uses the n8n-nodes-idealista-scraper community node and requires a self-hosted n8n instance.

How it works

The Schedule Trigger fires every 6 hours
The Idealista Scraper fetches latest rentals via API-based extraction (never breaks unlike screen scrapers)
The Code node compares results against previously seen listings using n8n's workflow static data
Only genuinely new listings pass through -- duplicates are automatically filtered out
Each new listing is sent as a rich Slack message and logged to Google Sheets

Setup

Install n8n-nodes-idealista-scraper via Settings > Community Nodes
Add your Apify API credential (get token here)
Add your Slack credential (OAuth2)
Create a Slack channel (default: #real-estate-alerts)
Create a Google Sheet for listing history and select it in the Sheets node
Customize the scraper filters for your target area and budget
Activate the workflow!

Customization

Change locationId for other cities (Barcelona, Rome, Lisbon, Milan)
Adjust maxPrice, bedroom, and amenity filters (64+ available including pets, furnished, AC)
Replace Slack with Email, Telegram, or Discord
Adjust schedule interval (default: every 6 hours)
The first run treats all listings as new; subsequent runs only alert on unseen listings
Cost: $0.10/day (4 runs x 1 page x 40 properties)

Default filters

| Filter | Value |
|--------|-------|
| Operation | Rent |
| Location | Madrid |
| Max Price | 1,500 EUR/month |
| Bedrooms | 1-2 bedrooms |
| Elevator | Required |
| Published Since | Last week |