MASTERN Investment Management's Office and Logistics Assets Both Earn GRESB '5-Star' Ratings

Office and logistics center assets managed by MASTERN Investment Management have simultaneously received the highest rating in a global ESG (environmental, social and governance) assessment.

A view of Logisco Siheung, which earned the top rating of “5 Stars” in its first GRESB assessment. Provided by Mastern Investment Management.

On October 20, MASTERN Investment Management, an asset manager specializing in alternative investments, said that the Concordian Building and Logisco Siheung logistics center, both under its management, had each earned the highest rating of “5 Stars” in the 2026 assessment by GRESB (Global Real Estate Sustainability Benchmark), a global real estate sustainability assessment organization.

The Concordian Building, located in Seoul’s central business district (CBD), scored 91.7 points and maintained its 5-star rating for the second consecutive year. It ranked third in the East Asia peer group, which included high-rise office buildings in Korea, Japan and China. Its Platinum rating, the highest level in the LEED (Leadership in Energy and Environmental Design) Operations and Maintenance (O+M) category, earned earlier this year, contributed positively to the result.

Logisco Siheung logistics center, which took part in the GRESB assessment for the first time this year, also scored 91.5 points and earned the highest 5-star rating on its first attempt. It ranked second in the East Asia ambient-temperature logistics peer group and third among logistics assets with the same strategy worldwide.

Both assets scored a perfect 30 points in the Management category and earned total scores more than 10 points above the overall GRESB average. They also received the Green Star designation, awarded to assets that demonstrate strong performance in both management and actual operational performance.

GRESB is a global organization that assesses the sustainability and operational performance of real estate and infrastructure assets worldwide. Its assessment framework is widely recognized as a credible global standard for real estate sustainability. The assessment is divided into Management, worth 30 points, and Performance, worth 70 points, which measures actual operational data on energy, greenhouse gas emissions, water and waste. The 5-star rating is awarded on a relative basis to only the top 20% of all participants.

“The fact that assets in two different sectors—offices and logistics centers—have both earned the highest rating demonstrates that MASTERN Investment Management’s asset management system and operational capabilities are being proven in practice,” said Park Hyungseok, CEO of MASTERN Investment Management. “We will continue to build a track record of results that strengthens investor confidence, drawing on management capabilities that meet global standards.”

This content was produced with the assistance of AI translation services.