5,8M+
A prediction based on more than 5,8 million previously sold homes.
1.600+
An AI-driven model based on over 1.600 characteristics of the property.
99,6%
A tested
prediction accuracy
of 99,6%.
Why Smart?
In the third quarter of 2025, as much as 71% of homes were sold above the asking price, with an average overbid of 4.9%. The housing market is therefore fiercer and more competitive than ever.
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SlimBieden gives you the advantage you need. After filling out the form, we collect 1,653 characteristic data points about the property you are interested in. Thanks to this level of detail, we can use machine learning to optimally compare the selected property with more than 5.8 million transactions (approximately 94.5% of all transactions registered at the Kadaster over a period of more than 20 years). The result is an optimal prediction of the winning bid for the property in question.
Our partners
SlimBieden supports real estate agents and financial advisors every day with better-substantiated bids. Would you like to know what these partnerships consist of? On our business page, you can discover everything about our existing partnerships and the opportunities to become a partner yourself.
Customer reviews:
"Clear, easy to use, and immediate results. Everything you need to base your bid on for your future home."
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Cas - Rotterdam
How does it work?
Step 1
Collecting data
Enter the address of your future home and answer a few questions to start the prediction.
Step 2
Pay
After answering the final question, you will be automatically redirected to the payment via iDeal.
Tip: A lot of information can be found on the website of the selling agent and property marketplaces like Funda.
Step 3
Result
After the payment and a moment of patience for the calculation, you will see the result immediately.
