Description
ImmoKnow is a powerful Chrome extension designed to bring real-time price intelligence directly to immoweb listings. It eliminates the need for manual research, extra tabs, or complex spreadsheets by overlaying crucial market data directly onto the property pages you are browsing. With ImmoKnow, you can instantly see market estimates, identify if a property is overpriced or underpriced, and understand potential rental yields and investment metrics.
The core functionality of ImmoKnow revolves around answering the critical question: "Is this listing overpriced?" Upon opening any immoweb listing, the extension immediately displays the property's estimated market value and the extent of its deviation from that price. A green indicator suggests a potential deal, while a red indicator signals an opportunity to negotiate harder.
Beyond simple price comparisons, ImmoKnow offers a comprehensive market picture. It provides P25, Median, and P75 price ranges for comparable properties, a live price distribution curve showing where the listing sits within the market, price per square meter against market averages, and an indicator of market volatility. For those considering investment properties, ImmoKnow includes a rental yield and break-even calculator. This tool automatically estimates market rent based on local data, calculates gross and net rental yields, and projects break-even timelines. It also breaks down full costs, including notary fees, renovations, property tax, insurance, and management fees, with all fields being editable to suit individual circumstances.
An integrated Market Explorer dashboard, accessible via the extension icon, offers a broader view of the Belgian real estate market. Users can filter data by province, property type, and surface area to see average and median sale and rent prices, price per square meter, and rental yields by region and property type, all presented with live charts. Every estimate provided by ImmoKnow comes with a confidence score, indicating the reliability of the data based on comparable properties and search proximity.
ImmoKnow is free to use, requires no account to start, and installs in seconds. It operates seamlessly on immoweb in French, Dutch, and English. The data powering ImmoKnow is sourced from official Belgian public data, including Statbel, FPS Finance cadastral records, and the Fednot notary barometer, supplemented by data from a network of real estate professionals, ensuring reliable and up-to-date insights.
ImmoKnow's Core Features
Real-time price intelligence for immoweb listings
On-page price estimates and market averages
Overpriced/underpriced property indicators
Rental yield and investment metric calculations
P25/Median/P75 price distribution for comparables
Live price distribution curve
Price per m² vs. market average
Market volatility assessment
Market rent estimation
Gross and net rental yield calculation
Break-even timeline calculator
Full cost breakdown for rental investments
Market Explorer dashboard for Belgium
Confidence score for estimates
Data sourced from official Belgian public records
How to use ImmoKnow?
Install: Add the ImmoKnow extension to your Chrome browser.
Browse: Navigate to any listing on immoweb.be.
Analyze: View price estimates, market data, and rental yields directly on the listing page.
Negotiate: Use the insights to inform your offers and negotiations.
Explore: Open the Market Explorer dashboard for broader market analysis.
ImmoKnow's Use Cases
- Property Valuation
- Investment Analysis
- Negotiation Aid
- Market Research
- Deal Identification
- Rental Income Projection








