Dutch purchase contracts contain two clauses that sound almost identical but work in opposite directions. A self-occupancy obligation (zelfbewoningsplicht) requires you, the buyer, to live in the property yourself. A non-occupancy clause (niet-zelfbewoningsclausule) is a declaration by the seller that they never lived there — and it shifts risk onto you.
Self-occupancy obligations come from opkoopbescherming, the buy-to-let protection scheme. Since 2022, municipalities may designate areas where an existing home below a set WOZ threshold cannot be bought in order to rent it out. Amsterdam, Utrecht, Rotterdam, The Hague and dozens of other municipalities have adopted it. Buy in such an area and you must occupy the home yourself, usually for at least four years.
The exact WOZ threshold and the designated districts vary by municipality and are revised periodically. None of this appears in the Funda listing. Always check with the municipality or through your agent before you bid — particularly if you are buying with any intention of letting the property, or even a room in it, later on.
There are exceptions to buy-to-let protection: letting to first-degree family, temporary letting of up to twelve months, and homes forming part of a shop or business premises. For those you apply to the municipality for a rental permit (verhuurvergunning). Letting without a permit where opkoopbescherming applies can attract an administrative fine.
A self-occupancy duty can also be imposed contractually rather than by the municipality. New-build sales and sales by housing corporations frequently include a self-occupancy clause with an anti-speculation penalty in the deed, charging you if you resell or let within a set period. This is separate from opkoopbescherming and can apply on top of it.
The non-occupancy clause is a different animal entirely. By default, a seller using the standard NVM purchase deed warrants that the property is fit for normal use as a dwelling. Where the seller has never lived there — heirs, a bank after repossession, an investor — they will often limit that warranty, declaring they know nothing about the condition of the property because they were never in it.
The effect is that the risk of hidden defects lands largely on you. Discover a leaking foundation or a rotten floor after transfer and you will struggle to invoke the fitness-for-normal-use warranty. With this clause in place a structural survey is not a luxury but the minimum — and it is worth making that survey a condition of your offer.
How to spot them in the deed: the occupancy duty appears as 'zelfbewoningsplicht' or 'anti-speculatiebeding'; the other as 'niet-zelfbewoningsclausule' or 'ouderdomsclausule' (an age clause, which limits the warranty on account of the building's age with much the same effect). Read both with your buying agent or notary before you sign, not after.
Groundwerk flags what the official data records about a specific address — build year, foundation type, soil conditions and known risks in the immediate area — which is precisely where a limited warranty can hurt you most.