Seoul CBD to see first prime office leasing supply since 2020

Three new prime towers are set for completion in 2026.

After a year without new prime office completions in 2025, Seoul’s central business district (CBD) is set to see a fresh wave of high-quality supply in 2026, marking the first delivery of fully leasable prime stock since Grand Central.

According to a report by Savills, three prime office developments are scheduled for completion in the CBD this year, all of which will be fully available for lease.

Three Prime Developments Scheduled

The first two projects — G1 Seoul and Rene Square — are expected to complete in the first half of 2026.

G1 Seoul is located in the Gongpyeong district (15 and 16), while Rene Square sits within Euljiro 3-ga district 6, both in the heart of the CBD.

Later in the year, Eul Tower, located in Euljiro 3-ga district 12, is scheduled for completion in the second half of 2026.

First Fully Leasable Prime Stock in Six Years

Savills highlighted that all upcoming supply will be fully leasable, distinguishing this cycle from recent years where new completions were limited or largely owner-occupied.

The 2026 deliveries represent the first injection of prime leasing stock into Seoul’s CBD since the completion of Grand Central in 2020, potentially reshaping tenant options in a market that has experienced constrained Grade A availability in recent years.