Unregistered Buildings (미등기 건물) in Korea: Buyer Risks (2026)
By the RuralRoof Editorial Team · Last updated 2026-10-16 · 5 official sources
A Korean country house can be sold with a registered plot of land and no registered house on it. The seller still hands over keys, but the law does not hand over ownership.
This guide explains why, using the Civil Act, the Real Estate Registration Act and the Building Act. It covers four typical cases, the costs an unpermitted structure carries, and the checks to run before a deposit.
- Ownership of Korean real estate passes by contract only when it is registered (Civil Act Art. 186), so an unregistered house must be registered before you can own it on paper [1].
- A first registration (보존등기) is open to the first owner on the building register or their heir, or through a court judgment, expropriation or the county head's confirmation (Registration Act Art. 65) [2].
- Heirs own without registering, but cannot sell until they register (Civil Act Art. 187) [1].
- Structures built without a permit can bring correction orders and repeated enforcement charges, which the Building Act can direct at the owner (Arts. 79, 80) [3].
What is an unregistered building (미등기 건물)?
A building with no ownership entry in the court registry (등기부). Some still appear on the county's building register (건축물대장); others appear on neither record [2] [4] [5].
The two records do different jobs. The building register, kept by the county, records that a building exists and was permitted; the registry, kept by the court, records who owns it.
In practice, the gap shows only when the buyer pulls both records side by side. For example, the land registry may name the seller while no building registry exists at all.
Why does registration decide who owns the house?
Because Korean law says so. The Civil Act states that a change in real-property rights by contract takes effect only when it is registered (Art. 186) [1].
“The acquisition, loss or change of real rights in real property by a juristic act takes effect only upon registration.”
A sale contract and a paid price do not move ownership on their own. If the house was never registered, there is no registered title for the seller to transfer to you.
Which unregistered cases can be fixed, and how?
It depends on which record is missing. The table sets out four cases and the legal route for each [1] [2] [3].
| Case | What the records show | Route |
|---|---|---|
| On the building register, not registered | 건축물대장 yes, 등기부 no | First owner on the register (or heir) files a preservation registration (Registration Act Art. 65(1)) |
| Inherited, heirs not registered | Registered to the deceased | Heirs register first; they cannot sell before (Civil Act Art. 187) |
| Extension or outbuilding missing | Main house on record, extra structure not | The extra part was built outside the permit system; ask the county (Building Act Arts. 11, 14, 79) |
| On neither record | No 건축물대장, no 등기부 | No register-based route; Art. 65 leaves a court judgment or the county head's confirmation (buildings) |
What does an unpermitted structure cost its next owner?
Correction orders and enforcement charges. The Building Act lets the county order demolition, repair or a ban on use against the builder, owner, manager or occupier (Art. 79(1)) [3].
If the order is not met, the county levies an enforcement charge. For a structure built without a permit or report, it is calculated from the standard tax value per square metre and the violation area (Art. 80(1)) [3].
The charge can repeat up to twice a year, as the local ordinance sets, until the order is met. Charges already imposed must still be paid after you comply (Art. 80(5)–(6)) [3].
Smaller homes get partial relief: for residential buildings of 60 m² or less, the ordinance sets the charge at up to half the standard amount (Art. 80(1)) [3].
Can you use or rebuild an unpermitted house?
Using a newly built house needs the county's use approval (사용승인), granted after inspection (Building Act Art. 22) [3]. A structure built outside the permit system never received one.
Rebuilding or a major repair needs a new permit or report (Arts. 11, 14) [3]. However, whether the old structure can be brought into the system is the county's decision, case by case.
Ask the county building department two questions: can the structure be permitted under today's rules, and what would that require? The answer is the real price of the house.
How do you check a rural house for registration problems?
Compare four records before any deposit. The method takes one online session and one county call.
- Registry (등기부) for the land and, separately, for the building, from 인터넷등기소 [4].
- Building register (건축물대장) from 정부24: does it exist, and does its floor area match the site [5]?
- On the register, look for a recorded violation entry (Building Act Art. 79(4)) [3].
- If the owner has died, check whether the heirs have registered (Civil Act Art. 187) [1].
- Ask the county building department about any structure on site but not on the register.
Registration is one of eight checks in the rural house checklist. For a specific address, use address search or browse rural listings.
Frequently Asked Questions
What does 미등기 mean in Korean real estate?
Unregistered: the building has no ownership entry in the court registry. Under Civil Act Art. 186, a sale only transfers ownership once it is registered [1].
Can I buy a house that is not registered?
You can sign a contract, but you only become the registered owner after the house is registered. Make the seller's registration a condition before the balance [1] [2].
Who can register an unregistered building?
The first owner on the building register or their heir, or a person proving ownership by court judgment, expropriation or, for buildings, the county head's confirmation (Registration Act Art. 65) [2].
Can heirs sell an inherited house without registering it?
No. Heirs acquire without registration, but the Civil Act bars them from disposing of the property until they register (Art. 187) [1].
What is an enforcement charge (이행강제금)?
A charge the county levies, up to twice a year, until a building correction order is met (Building Act Art. 80) [3].
What is a use approval (사용승인)?
The county's approval to use a newly built house. The builder applies after construction, the county inspects, and the building may not be used before approval (Building Act Art. 22) [3].
Is the enforcement charge lower for a small house?
For residential buildings of 60 m² or less, the local ordinance sets the charge at up to half the standard amount (Building Act Art. 80(1)) [3].
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General information, checked against the official sources below on the date shown. No sponsored content: no office, organization, agent or seller named here paid for or reviewed this page. Rules change, so confirm with the office named or a specialist (a licensed agent or a lawyer) before you sign.
Sources
- [1]민법 (Civil Act), Arts. 186, 187 · Korea Ministry of Government Legislation (law.go.kr) · accessed 2026-10-16
- [2]부동산등기법 (Real Estate Registration Act), Art. 65 · Korea Ministry of Government Legislation (law.go.kr) · accessed 2026-10-16
- [3]건축법 (Building Act), Arts. 11, 14, 22, 79, 80 (in force 2026-02-27) · Korea Ministry of Government Legislation (law.go.kr) · accessed 2026-10-16
- [4]인터넷등기소 (등기사항증명서 열람·발급) · Supreme Court of Korea, Registry Office · accessed 2026-10-16
- [5]정부24 (건축물대장 열람·발급) · Ministry of the Interior and Safety · accessed 2026-10-16