Title, registry, and acquisition tax: the South Korea property due diligence checklist for 2026

South Korea commercial property due diligence is anchored by the real estate register (부동산 등기부, Budongsan Deunggibu), a public online system covering ownership, mortgages, and all encumbrances. Foreign investors need to navigate: acquisition tax at approximately 4.6-5% of declared value, foreign exchange transaction reporting requirements, and urban zoning classifications that govern permitted commercial use.

South Korea acquisition tax (취득세, chwideukse) is the main transfer tax: 4% of the declared acquisition value for commercial property, plus supplemental taxes (농어촌특별세 at 0.2% and 지방교육세 at 0.4%) for a combined effective rate of approximately 4.6% for commercial property acquisitions by corporate buyers; higher combined rates apply for certain luxury or non-residential acquisitions; the acquisition tax is assessed by the local government (시/군/구) based on the transaction amount or standard price, whichever is higher; filed and paid within 60 days of acquisition.

South Korea's real estate register (부동산 등기부, Budongsan Deunggibu) is maintained by district courts and searchable online at the Supreme Court's Internet Register Office (인터넷 등기소, iros.go.kr); the register has three sections: 표제부 (Title Section, piaje-bu: property description including lot number, area, building details), 갑구 (Section A, gap-gu: ownership history and ownership-related claims including provisional attachments/가압류), and 을구 (Section B, eul-gu: mortgages/근저당권 and other encumbrances); title to South Korean real property passes on registration, not on signing the contract; all transfers must be registered to be effective against third parties.

Set up a due diligence data room before advisors engage. Load register extracts, cadastral map, building permit, occupancy certificate, urban planning certificate, foreign investment report documentation, and lease files.

Where South Korea property deals go wrong

Not every check carries the same weight. The table below sorts them by deal impact - dealbreakers first, then what moves the price, then basic hygiene - so your Korean attorney and advisor know what to clear first.

South Korea commercial property due diligence checklist

The table ranked risks by severity. This is the full checklist to work through, grouped by area.

Real estate register search and title

• Day one: search iros.go.kr for the property's Real Estate Register (부동산 등기부); identify the property by both lot number address (지번 주소) and road name address (도로명주소); pull both the land register (토지 등기부) and building register (건물 등기부) certified extracts (등기부등본)
• Gap-gu (갑구) review: confirm current registered owner matches the seller; review the entire ownership history in 갑구; identify any provisional attachment (가압류), provisional disposition (가처분), or ownership injunction; any such annotation in 갑구 must be cleared before transfer is possible
• Eul-gu (을구) review: list all mortgages (근저당권) with registered maximum amounts and mortgage holders; identify any registered 전세권 (leasehold deposit rights); confirm discharge plan for all 을구 encumbrances before closing
• Cross-check with Building Register (건축물대장) at seumteo.go.kr: confirm building area, approved use, number of floors; flag any unlicensed additions (불법 건축물) noted in the Building Register

Give each advisor a scoped link in Ellty. Korean attorney sees register extracts and Building Register. Building inspector sees building permit and occupancy certificate. Environmental consultant sees Ministry of Environment records and Phase I ESA. Lender sees register extract, tax payment confirmation, and lease pack. Each party sees only their files.

Foreign exchange and FETA compliance

• Confirm buyer entity type and nationality: Korean commercial real estate can be acquired by foreign individuals and companies subject to reporting requirements; confirm with Korean legal counsel whether the specific buyer type requires Foreign Direct Investment registration under the Foreign Investment Promotion Act
• For fund transfers into Korea to fund the acquisition: the transfer must be reported to an authorized foreign exchange bank in Korea under FETA; the fund transfer path (routing through Korean bank account, use of authorized channel) must be structured with the authorized bank before transfer
• Within 60 days of closing: file the real estate acquisition report (외국인 부동산취득 신고) with the Ministry of Land, Infrastructure and Transport (국토교통부) through the Real Estate Transaction Management System (RTMS, 부동산거래관리시스템); the required information includes buyer details, seller details, property details, transaction amount, and financing information; penalties apply for non-filing or late filing
• Confirm the applicable Korean tax treaty for the buyer's home country; Korea has comprehensive tax treaties with most OECD countries affecting withholding tax on rental income and capital gains on disposition; structure the holding vehicle with Korean tax counsel to optimize treaty benefits

Load all files into Ellty before advisors engage. Korean attorney sees FETA compliance documentation. Tax counsel sees treaty analysis and acquisition tax calculation. Lender sees all register extracts. Foreign exchange bank sees funds transfer documentation.

Building compliance and use confirmation

• Request building permit (건축허가) from seller; verify with local government building authority (건축과, geonchuk-gwa) at the si/gun/gu level; the permit will show the approved use, FAR, BCR, and building scope
• Request occupancy permit (사용승인) from seller; verify with local government; the occupancy permit is the final official confirmation that the building was completed in compliance with the permit and is fit for its designated use
• Check the Building Register (건축물대장) on seumteo.go.kr for any flagged violations (위반건축물); any violation flag means unauthorized construction, additions, or use change has been detected; the owner must remedy violations to clear the flag; violations can prevent sale or financing
• For any building modification or addition after original construction: confirm separate building permits were obtained; unauthorized additions to commercial buildings in South Korea are a common finding in older stock

Compare Japan's commercial property due diligence process for Northeast Asian portfolio strategy. South Korea and Japan are neighboring developed Asian markets with deep institutional commercial sectors; key differences: South Korea (KRW currency, real estate register through courts at iros.go.kr, acquisition tax 4.6-5%, Commercial Lease Protection Act tenant rights) vs. Japan (JPY, Legal Affairs Bureau registry at touki.moj.go.jp, no acquisition transfer tax but 2% registration tax, FEFTA foreign investment screening for certain asset types); Seoul's prime office cap rates and Tokyo's prime office cap rates have historically tracked different pricing levels reflecting different risk and liquidity profiles.

How due diligence works in South Korea

Step 1 - Register search and title

Day one: pull certified extracts from iros.go.kr for both land and building registers. Check 갑구 for provisional attachments and ownership injunctions. Check 을구 for all mortgages and 전세권. Cross-reference with Building Register at seumteo.go.kr.

For any 가압류 or 가처분 in 갑구: full stop - confirm clearance timeline with Korean counsel before proceeding.

Step 2 - FETA compliance and urban planning

Structure FETA compliance approach with authorized Korean bank and Korean legal counsel before funds are transferred. Obtain urban planning certificate (토지이용계획확인원) from local government or LURIS system. Confirm zone classification and FAR for the property.

Request building permit and occupancy certificate. Check Building Register for any violation flags.

Step 3 - Leases, acquisition tax, and AML

Abstract all commercial leases. Check each tenant for Commercial Lease Protection Act coverage (business registration at the premises and total occupancy period). Confirm 전세권 registered leasehold deposits in 을구. Calculate acquisition tax with Korean tax counsel. Confirm seller corporate register and UBO. Run OFAC and sanctions screens.

Step 4 - Transfer and registration

Korean commercial property transfer: the purchase contract (매매계약서) is signed, then the transfer registration is submitted to the district court KW section by a licensed 법무사 (judicial scrivener) within the required timeline; the transfer registration requires proof of acquisition tax payment; upon registration in 갑구, the buyer becomes the registered owner effective against third parties; pull a fresh register extract on the day of registration submission to confirm no new attachments or injunctions were registered between diligence and closing.

Load closing files into Ellty before the transfer registration date. Korean 법무사 sees all required transfer documents. Tax counsel confirms acquisition tax payment receipt. Lender sees post-closing register extract with buyer registered in 갑구.

What makes South Korea different

The provisional attachment (가압류, ga-amnyu) system in Korean real property law creates a timing risk that has no exact parallel in most Western European or Anglophone commercial markets. A creditor of the property owner can apply to a Korean court for a provisional attachment order, which the court can grant ex parte (without notice to the property owner) if the creditor demonstrates a prima facie claim. The provisional attachment is then registered in 갑구 of the Real Estate Register, where it immediately blocks any clean transfer to a buyer because a buyer cannot receive title free of the attachment. The problem for commercial transactions is the timing: a 가압류 can be registered between the date of the initial register search and the date of the transfer registration, particularly in situations where the seller has financial difficulties that were not apparent at deal entry. Standard Korean commercial practice addresses this with two measures: first, a provision in the purchase contract requiring the seller to indemnify against any attachment registered after signing; second, a fresh register extract on the day of closing (or even the day of registration submission) to confirm no new attachments have appeared between final sign-off and registration. For leveraged acquisitions with a gap between signing and closing: the lender's Korean counsel typically monitors the register during the closing gap period. This vigilance is not paranoia - in Korean commercial deals involving sellers with complex capital structures or financial stress, the 가압류 risk is real and the fresh-extract-at-closing practice exists precisely because it has mattered in actual transactions.

South Korea's Commercial Lease Protection Act (상가건물 임대차보호법) creates tenant rights that materially affect commercial real estate underwriting when tenants qualify for its protections. The Act gives qualifying commercial tenants (those with business registration at the premises, a deposit below a specified threshold, and lease duration within the protection period) the right to request lease renewal for up to 10 years total from the commencement of tenancy; the landlord can only refuse renewal on specific enumerated grounds including the landlord's own use of the premises for business. The 5% annual rent increase cap under the Act applies to qualifying tenants. For prime institutional Seoul commercial (large floor plate office, Grade A retail) the typical tenants have deposits above the Act's threshold and leases are negotiated on institutional terms, so the Act's practical impact is limited. But for mid-market commercial, multi-tenant buildings, and any commercial with small business tenants who have long occupancy histories: the Act's protections are live and affect: the ability to terminate tenancies for refurbishment, the maximum rent increase achievable at renewal, and the realistic timeline for full vacancy possession if redevelopment is planned. For any acquisition where the investment thesis requires near-term tenant turnover or redevelopment: confirm every tenant's occupancy period, business registration status at the premises, and Act eligibility before pricing the deal.

Seoul's commercial real estate market is split between three main submarkets that trade at different pricing and liquidity levels, and foreign investors should be clear on submarket fundamentals before underwriting. The CBD (중구/종로구, Central Seoul and Gwanghwamun) is the traditional financial and government zone with legacy stock (many older buildings) and is headquarters for Korean financial institutions and law firms; rents have been growing as prime CBD supply has been limited. Yeouido (영등포구) is the financial and broadcasting district, home to the Korean Stock Exchange (KRX) and major securities houses; a mix of 1980s-2000s institutional office stock. Gangnam (강남구, particularly Teheran-ro and its environs) is the new business district, favored by IT and tech firms, with newer and higher-specification office stock; demand from Korean tech, e-commerce, and startup ecosystem firms has supported strong Gangnam fundamentals. Each submarket has its own pricing, tenant profile, and liquidity characteristics; institutional buyers (foreign funds, Korean REITs/CR-REITs, insurance companies) are active across all three but Gangnam commands premium pricing and lowest vacancy relative to other submarkets in recent years.

Timeline and cost in South Korea

Weeks 1-2 cover kickoff: certified Real Estate Register extracts from iros.go.kr (land and building), Building Register from seumteo.go.kr, 가압류/가처분 check in 갑구, urban planning certificate (LURIS), building permit and occupancy certificate request from seller and local authority, Ministry of Environment contaminated sites check, Phase I ESA commission for industrial zone commercial, lease abstraction and Commercial Lease Protection Act eligibility review for each tenant, FETA compliance structure planning with Korean bank, acquisition tax calculation with Korean tax counsel, seller corporate register check and UBO identification, OFAC and sanctions screens. Korean attorney fees: KRW 10M-50M (approx. USD 7,500-38,000) for this phase.

Load all files into Ellty before advisors engage. Standard South Korea commercial: 45-90 days. FETA compliance filing (post-closing): within 60 days. Building Register violation remediation: 1-6 months if required.

Weeks 2-6 cover deep review: register analysis, 을구 encumbrance clearance plan, Building Register vs. occupancy permit vs. as-built comparison, urban planning zone vs. intended use confirmation, Phase I ESA delivery, Commercial Lease Protection Act rights analysis per tenant, acquisition tax calculation and treaty analysis, FETA structure finalization. Costs: KRW 20M-100M (approx. USD 15,000-75,000).

Weeks 6-12 handle resolution: mortgage discharge, Building Register violation clearance, FETA authorization and bank channel setup, acquisition tax payment (before or concurrent with registration), 법무사 transfer registration submission to district court, fresh register extract on day of registration, post-closing FETA and MLITT filing within 60 days.

South Korea total buyer-side transaction costs: acquisition tax approximately 4.6% of transaction value; 법무사 (judicial scrivener) fees for registration; Korean attorney fees (0.3-1% of transaction value); Korean tax counsel fees; FETA compliance administrative costs; real estate broker fee (typically 0.5-0.9% of transaction value for commercial, negotiable). Total effective buyer cost: approximately 5-7% of transaction value.