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Bag in 5 Minutes

2 September 2026

Bag in 5 Minutes

The BAG (Basic Register of Addresses and Buildings) is the official Dutch basic register containing data on addresses and buildings. Municipalities are the data custodians and are responsible for registering this data and keeping it up to date.
The BAG includes, among other things, places of residence, public spaces, number designations, properties, residential units, sites, and berths. A property is a building, while a single property may contain multiple residential units, such as apartments. BAG objects have unique identifiers, allowing data to be reliably linked to other administrative systems and data sources. Many BAG objects contain geographic information and can therefore be displayed and analyzed in GIS software such as QGIS. For example, you can select buildings based on year of construction, use, location, or status. BAG data can be combined with other datasets, such as elevation data, cadastral information, aerial photographs, and data on water, energy, or infrastructure. As a result, the BAG is widely used for spatial planning, water management, energy, real estate, mobility, and safety, among other applications. For Geo-ICT professionals, knowledge of the BAG is important because the registry forms a key foundation for many Dutch spatial analyses and applications.

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Frequently Asked Questions About Courses

After the course, you’ll have another two weeks to ask the instructor questions. Since the instructor is already teaching other courses, it’s best to email your questions to info@geo-ict.nl. Your question will be forwarded to the instructor, and you’ll receive a response within 24 hours.

If you’re a bit further along and encounter practical problems you can’t solve on your own, it’s best to use Online Support. You’ll spend one day online with the instructor and receive personalized one-on-one instruction. All your problems will be resolved, and you’ll have made significant progress.

  • Blended learning, also known as hybrid learning, is an educational method that combines traditional face-to-face classes with online learning materials and interactive sessions. This approach offers students flexibility and control over aspects such as the time, place, and pace of learning, while allowing them to benefit from direct interaction with instructors and fellow students. ​
  • At the Geo-ICT Training Center in the Netherlands, blended learning is implemented by having students study largely independently, supplemented by scheduled interactive sessions with an instructor. During these sessions, students can ask questions and discuss complex topics, which fosters a deeper understanding of the course material. All Blended Learning courses begin with a 2-hour online session. The instructor delivers presentations and assigns various exercises and assignments to the student. The student can then work on these independently. After a few weeks, another one-hour online session follows.

If you run into problems in practice that you can’t solve on your own, you have two options: you can sign up for a beginner or advanced course, or you can sign up for Online Support.

You’ll spend a day online with an instructor and receive personalized one-on-one instruction. All your problems will be resolved, and you’ll have made significant progress.

All courses are taught in person. Course hours are from 9:00 AM to 4:00 PM. Coffee, tea, lunch, and a laptop are provided.

Taking a course online is also possible, but we only offer hybrid courses in exceptional cases. If you wish to participate in a course online, please indicate this during registration—select “Online” as the location. If that is not possible, this course will only be offered on-site in Apeldoorn.

Yes, we do this regularly. Our instructor will come to your location and bring laptops for the participants. All you need to do is arrange a classroom at your location.

Please email your requirements to info@geo-ict.nl, and we will send you a quote. Once you’ve confirmed the order, our course coordinator will contact you to schedule the training days.

After each course, participants receive a link to our evaluation portal. There, you can share your feedback on what you liked and didn’t like about the course. We always do our very best, but of course, there may be times when you have a complaint. Click on “Complaints Procedure.” It explains what steps you can take. Geo-ICT Training Center, Netherlands is a member of the Dutch Council for Training and Education (NRTO).

After the course, we will email you a link to our evaluation portal. There, you can log in and fill out an evaluation form, and you can also download your certificate of participation.

Courses are offered on multiple dates. On the individual registration pages, you will find an up-to-date overview of all available course dates.