Basic Registration Addresses and Buildings
Kadaster BAG Lookup
Check the officially registered surface area and build year of any Dutch property. 30-40% of BAG registrations deviate from reality.
Kadaster BAG lookup
Instantly verify the officially registered surface area, build year, and property type from the Dutch national registry.
Why BAG errors cost you money
An incorrect BAG surface area creates a chain reaction affecting your WOZ value, WWS points and maximum rent.
📐BAG area too low
🏠WOZ value too low
📊Fewer WWS points
💶Lower maximum rent
30-40% of BAG data is inaccurate
The BAG is often based on building plans, not actual measurements. After renovations, extensions or subdivisions, the BAG is rarely updated.
How to request a correction?
Submit a report to your municipality with a certified NEN 2580 measurement report as evidence. The municipality is required to process this within 6 months.
Related articles
BAG area is wrong: how to request a correctionWOZ value and rent: how are they connected?What is a NEN 2580 measurement report?
Also calculate your WWS points
Know your surface area? Instantly calculate which rental segment your property belongs to.
WWS calculator