Skip to content
OnderdeMuur.nl

Free · no account · open government data

What’s under and around your walls?

Enter an address and see at a glance how it scores on foundation, noise, air and neighbourhood. Useful when you’re buying or renting in the Netherlands, or just curious.

What you'll see

  • Foundation

    Is the home in an area where older houses more often have foundation problems? We combine that with the building's construction year.

  • Noise

    How much noise comes from roads, trains and aircraft, during the day and at night?

  • Air & neighbourhood

    How clean is the air compared to the WHO guidelines? And what does the neighbourhood look like in numbers?

See an example

Curious what a report looks like? Open one of these well-known addresses.

Living in…

See how these municipalities score on foundations, noise and air.

Where does the information come from?

All data comes from open data published by the Dutch government, such as the Kadaster (BAG), RVO, RIVM and Statistics Netherlands (CBS). We translate it into plain language.

Read more about the sources

This information is indicative and does not replace a building survey or foundation inspection.