The strong demand for core assets will support office investments in the city.

Seoul Office Investment Volumes Set to Hold Strong Through 2026

Seoul's office investment market is forecast to sustain robust transaction volumes through 2026, with core Grade A assets in prime districts commanding capitalisation rates in the range of 3.8% to 4.2% — figures that continue to attract both domestic institutions and cross-border capital despite a high global interest rate environment. The market recorded approximately KRW 8 trillion (roughly USD 6 billion) in total commercial real estate investment volume in 2024, with the office sector accounting for the largest share. Analysts tracking the Seoul market expect this momentum to carry into the next cycle, underpinned by a structural shortage of premium office supply in key business districts.

• Seoul office cap rates (Grade A, CBD): 3.8% – 4.2%
• Total CRE investment volume (2024): ~KRW 8 trillion (USD ~6 billion)
• CBD Grade A vacancy rate: Sub-2%
• Average rent growth YoY (prime CBD): +6% – +8%
• Forecast investment volume growth (2025–2026): +5% – +10%

Market Context: Why Core Assets Are Driving Demand

Seoul's three primary office submarkets — the Central Business District (CBD), Gangnam Business District (GBD), and Yeouido Business District (YBD) — have each recorded vacancy rates well below the 5% threshold that typically signals a landlord-favourable market. The CBD in particular has sustained vacancy below 2%, a level not seen consistently since the pre-pandemic era. This tightness has pushed effective rents sharply higher, with prime CBD assets recording annual rent growth of between 6% and 8% over the past two years. Investors pricing assets today are doing so against a backdrop of genuine occupier demand, not speculative positioning.

Domestic pension funds and insurance companies remain the most active buyers of stabilised core office assets, given regulatory mandates to hold income-producing real estate. However, Singapore-based REITs and pan-Asian opportunity funds have also been active participants in larger lot-size transactions exceeding KRW 200 billion. The relative scarcity of quality stock coming to market has kept pricing firm even as borrowing costs have risen globally, with sellers unwilling to accept discounts on assets generating reliable long-term income streams from creditworthy tenants.

Supply Constraints Reinforce the Investment Case

New office completions in Seoul's prime districts remain limited through 2026, with the development pipeline constrained by high construction costs, lengthy permitting timelines, and a scarcity of developable land within established business zones. This structural undersupply is expected to keep occupancy rates elevated and support continued rental escalation, particularly in the GBD where technology, media, and entertainment tenants have aggressively expanded their footprints. Several major tenants in Gangnam have signed lease renewals at rents 15% to 20% above their previous contracted rates, a clear indicator of the leverage landlords currently hold in negotiations.

The limited new supply also means that investors seeking exposure to Seoul office must compete for a relatively small pool of available assets, which has the effect of compressing yields further and sustaining high entry prices. For investors with a longer hold horizon of five to seven years, the risk-adjusted return profile remains attractive when rental growth assumptions are modelled conservatively at 4% to 5% annually.

What This Means for Investors Eyeing Seoul Office

For cross-border investors assessing Seoul office allocations, the key consideration is entry pricing versus income growth potential. Cap rates in the sub-4% range may appear thin relative to other Asia-Pacific gateway cities, but Seoul's rent growth trajectory and near-zero vacancy in core submarkets provide a credible path to total returns in the 7% to 9% range over a five-year hold period. Investors from markets such as Singapore, Japan, and Australia have been increasingly active in Seoul, drawn by the city's transparent transaction environment, strong rule of law, and the depth of occupier demand from both domestic conglomerates and multinational corporations.

Looking ahead, the anticipated easing of interest rates by the Bank of Korea — which has already begun a cautious rate reduction cycle — is expected to improve debt financing conditions for leveraged buyers in the second half of 2025 and into 2026. This should broaden the buyer pool and potentially unlock assets currently held by owners reluctant to transact at compressed yields. For investors positioned in Seoul office today, the combination of rental growth, supply scarcity, and improving financing conditions presents a compelling medium-term outlook that few other Asia-Pacific office markets can currently match.