Undivided estate
Undivided estate (uskiftet bo) means that the surviving spouse, after the other has died, takes over the whole joint estate undivided and postpones the inheritance settlement with the deceased's other heirs. The home, the holiday property and the rest of the assets stay together, and the survivor becomes the actual owner with full right of disposal while the settlement is postponed. Only when the survivor dies, sells the assets or chooses to settle the estate are the assets divided between the heirs of both spouses.
The right to an undivided estate follows from section 14 of the Inheritance Act. Towards joint children (joint direct heirs), the survivor can hold an undivided estate without consent, but towards the deceased's children from a previous relationship, consent is required under section 15 of the Inheritance Act. Registered partners have the same right as spouses. Cohabitants have a narrower right to an undivided estate under section 32 of the Inheritance Act: only cohabitants who have, have had or are expecting children together can hold an undivided estate, and then only with the joint home, contents, car and holiday property with contents, not the whole estate.
While holding an undivided estate, the survivor disposes of the entire undivided estate assets "during their lifetime as an owner" under section 22 of the Inheritance Act. Property can be sold and mortgaged freely, but gifts that are disproportionate to the assets require consent from the heirs under section 23 of the Inheritance Act, and an heir can demand that such a gift be reversed through legal action. The undivided estate ends if the survivor remarries, and creditors or heirs can demand a settlement if the assets are managed irresponsibly.
An undivided estate does not in itself trigger any transfer of title. The survivor becomes the actual owner with full right of disposal, but the registered title is not changed automatically. The Land Registry mirrors what has been registered, not the underlying inheritance situation, so the registered title holder and the current owner can well differ. There is also no duty to transfer the title while holding an undivided estate. The deceased remains the registered title holder until the property is sold and the buyer's title is registered, the estate is settled and title is transferred to the heirs, or the survivor registers title in their own name through a declaration of title in connection with inheritance, estate settlement and undivided estate submitted to Kartverket. Many leave it untouched; it is not required, and you avoid unnecessary registration. Transfer to the survivor or to heirs under the ordinary rules of the Inheritance Act is also exempt from document duty, see Kartverket's rules on document duty on inheritance. The fact that the Land Registry still lists a deceased title holder therefore only means that no new legal instrument has been registered; that is in line with how the system is meant to work, not an error. The undivided estate certificate itself is issued by the district court, see the Norwegian courts on death, inheritance and estate settlement.
In Placepoint you see this in the property panel: the Owners tab shows the whole chain of title including historical title holders, and you can order an electronic land register extract for the individual property. If a deceased person is still listed as title holder, an undivided estate is one of the most common explanations.
How it looks in Placepoint
In Placepoint you find this in the Property panel:

From Placepoint's glossary: Undivided estate
More information: Inheritance Act chapter 5 (Lovdata), Kartverket: Transfer on inheritance, estate settlement and undivided estate, Kartverket: Document duty on inheritance, SNL: Undivided estate
Engelsk: Undivided estate (uskiftet bo, Norwegian-specific arrangement where a surviving spouse takes over the joint estate undivided and postpones the inheritance settlement).
Common questions
What does it mean to hold an undivided estate?
It means that the surviving spouse takes over the whole joint estate undivided when the other dies, and postpones the inheritance settlement with the deceased's other heirs. The survivor becomes the actual owner with full right of disposal, and the assets are only divided when the survivor dies, sells or chooses to settle the estate.
Can you hold an undivided estate when there are children from a previous relationship?
Towards joint children, no consent is required, but towards the deceased's children from a previous relationship, each of them must consent under section 15 of the Inheritance Act. Without consent, that part of the inheritance must be settled.
Why is the deceased still listed as title holder in the Land Registry?
Because an undivided estate does not trigger any transfer of title. The Land Registry shows what has been registered, not the inheritance situation, and there is no duty to transfer the title while holding an undivided estate. The deceased remains the registered title holder until the property is sold, the estate is settled or the survivor registers title in their own name.
Can the survivor sell property that is part of the undivided estate?
Yes. Under section 22 of the Inheritance Act, the survivor disposes of the assets as an owner and can sell and mortgage freely. The limit is gifts that are disproportionate to the assets, which require consent from the heirs under section 23 of the Inheritance Act.
Do you have to pay document duty when title is transferred after an undivided estate?
Transfer to the survivor or to heirs under the ordinary rules of the Inheritance Act is exempt from document duty. Only a registration fee per document applies. See Kartverket's rules on document duty on inheritance.