First, what genuinely applies
As a buyer you have in principle 10 years from the takeover date to complain about hidden defects. The seller has a duty to disclose material facts about the property — both those the seller knows and those the seller ought to know.
So far it reads as a strong position. The problem is the three things that follow.
The seller has usually already disclaimed liability
If the seller has produced a condition report and an electrical installation report and offered to pay half of an owner-change insurance (ejerskifteforsikring), the seller can in principle disclaim liability for hidden defects under the Danish huseftersyn scheme.
This is not a loophole. It is the scheme itself, and it is used in the large majority of ordinary transactions. The exceptions are where the seller has acted fraudulently or with gross negligence, or has given a guarantee that does not hold.
The burden of proof sits with you. It is the buyer who must show the seller knew.
The defect must be large enough for a court to look at it
Under case law a price reduction normally has to exceed a threshold of roughly 3–5 % of the purchase price. The threshold is neither absolute nor a fixed percentage — in practice a range of 2–7 % is cited, depending on the court's assessment. Where the defective component is unlawful or genuinely unusable, reductions below 3 % are also accepted.
Applied to a property at 3,000,000 DKK:
- Threshold at 3 %: 90,000 DKK
- Threshold at 5 %: 150,000 DKK
- New roof: typically 50,000–160,000 DKK — often just below the threshold
- New consumer unit: typically 15,000–35,000 DKK — clearly below
- Damp work in one room: typically below the threshold
The consequence is uncomfortable but important: many of the findings people worry about most are too expensive for a household budget and too small for a court.
Owner-change insurance pays out less often than people think
According to DR, around 30,000 claims are filed a year — and two out of three reported claims result in no payment.
Typical exclusions that many people read only after a rejection:
- Damage caused by age, ordinary wear and lack of maintenance
- Purely cosmetic matters — there must be a reduction in value or usability
- Anything outside the building's foundation — external drains, garden, paving
- Unlawfully executed construction, apart from unlawful electrical and plumbing installations
- White goods, swimming pools and pests are rarely in standard cover
A rejection is not necessarily final. Insurers do in practice change decisions when a well-documented objection is submitted.
What to do, step by step
The order matters more than people expect. The most common expensive mistake is starting repairs before anything is documented.
Do not touch anything yet
Take dated photographs and video before anything is changed. Keep every receipt, including ones that seem irrelevant. A repair carried out before documentation makes it hard to prove what the damage looked like — and you are the one who has to prove it.
Get a building surveyor to assess cause and extent
In writing. An assessment of the cause matters at least as much as the repair price, because the cause is what decides whether this is covered damage or ordinary wear.
Complain to the seller in writing
Describe what you found, when you found it, and ask directly whether the seller was aware of it. The answer — or absence of one — forms part of the case. Do it without undue delay once you have the documentation.
Notify the insurer at the same time
The two tracks do not exclude each other. Report it even if you doubt cover — a notification costs nothing, and a rejection can be appealed using the documentation you already have from step 2.
Do the arithmetic before going to a lawyer
Hold the repair cost against the threshold on your own purchase price. If the finding is clearly below it, litigation is rarely the right route unless the matter is unlawful or renders the component unusable. It is an uncomfortable calculation, but cheaper to do first than afterwards.
And now the part this article is really about
Put the three together. You have ten years. The seller has disclaimed liability. A court looks first at amounts above roughly 90,000 DKK on a three-million home. The insurer rejects two claims out of three.
That does not mean you have no rights — it means the rights are weakest exactly where most findings sit: between 20,000 and 150,000 DKK. Expensive enough to hurt. Too small to litigate.
The only stage of the process where a finding is still free to react to is before you bid. There it costs nothing at all to move on to the next property.
In short
The ten years are real, but they are a deadline, not a guarantee. Protection after the sale is weaker than the number makes it sound, and weakest in precisely the price range where ordinary findings fall. If you know the documents before the bid, it is not a legal matter. It is simply a choice between two homes.
Frequently asked questions
How long do I have to complain about hidden defects after buying in Denmark?
As a buyer you have in principle 10 years from the takeover date to complain about hidden defects in the property. The deadline in itself does not mean you will recover anything: it says only how long a claim may be raised, not whether it can succeed. Whether you can get through depends on whether the seller has disclaimed liability under the huseftersyn scheme, and on how large the defect is relative to the purchase price.
Can the seller disclaim liability for hidden defects?
Yes. If the seller has produced a condition report and an electrical installation report and offered to pay half of an owner-change insurance policy, the seller can in principle disclaim liability for hidden defects under the Danish huseftersyn scheme. The exceptions are where the seller acted fraudulently or with gross negligence, or gave a guarantee that does not hold. In both cases the burden of proof lies with the buyer.
How large must a defect be before a price reduction is granted?
Under case law a price reduction normally has to exceed a threshold of roughly 3-5 percent of the purchase price. The threshold is neither absolute nor a fixed percentage, and in practice a range of 2-7 percent is cited depending on the court's assessment. Where the defective component is unlawful or unusable, courts also accept reductions below 3 percent. On a property at 3,000,000 DKK, 3-5 percent equals 90,000-150,000 DKK.
Does owner-change insurance cover hidden defects?
Not in every case. According to DR around 30,000 claims are filed a year and two out of three reported claims do not lead to a payment. The insurance typically does not cover damage caused by age, ordinary wear or lack of maintenance, nor purely cosmetic matters. Anything outside the building's foundation is generally excluded, and unlawfully executed construction is excluded apart from unlawful electrical and plumbing installations.
What is the first thing to do when I discover a hidden defect?
Do not repair it immediately. Document the finding with dated photographs before anything is changed, and have a building surveyor assess the cause and extent in writing. Then complain to the seller in writing and at the same time notify the owner-change insurer if one exists. A repair carried out before documentation can make it very difficult to prove what the damage looked like.