Notice Concerning Acquisition of CASBEE Certifications for Real Estate

This translation of the original Japanese notice is provided solely for information purposes. Should there be any discrepancy between this translation and the Japanese original, the latter shall prevail.

February 2, 2026

REIT Issuer: Daiwa Office Investment Corporation (Stock Code No.: 8976) Representative: Toshisuke Tanaka, Executive Director

Asset Manager: Daiwa Real Estate Asset Management Co. Ltd. Representative: Yoshiki Nishigaki, President and Representative Director

Inquiries to: Kentaro Azumi, General Manager, Acquisition and Asset Management Division (Tel: +81-3-6215-9649)

Daiwa Office Investment Corporation (the "Investment Corporation") hereby announces that 2 of the properties owned by the Investment Corporation acquired CASBEE certifications for Real Estate.

The total number of properties owned by the Investment Corporation that have acquired a green building certification has become 37, and the ratio of such properties to the entire portfolio properties (based on total floor area of the portfolio properties) has improved to 70.3%, achieving the mid-term target of 70.0% or more.

1. Overview of CASBEE certifications for Real Estate

   CASBEE (Comprehensive Assessment System for Built Environmental Efficiency) is a method for evaluating and rating the environmental performance of buildings as well as a comprehensive evaluation system for the environmental performance of buildings including consideration to the surrounding landscape in addition to the aspects of environmental load reduction such as energy and resource saving and recycling performance. CASBEE for Real Estate Certification evaluates buildings completed no less than one year prior, and is evaluated with one of the four ratings of Rank S, Rank A, Rank B+, or Rank B. For the details of CASBEE certifications for Real Estate, please refer to the following.

   (https://www.ibec.or.jp/CASBEE/english/certificationE.htm)

2. Property that has acquired the certification and its rating

   Property Name	Location	Rating	Date
   LAQUAS Higashi Shinjuku	2-2-6 Okubo, Shinjuku-ku, Tokyo	Rank A: ★★★★	January 30, 2026
   Daiwa Higashi-Nihonbashi	3-10-6 Higashi-nihonbashi, Chuo-ku, Tokyo	Rank S: ★★★★★

3. Future Measures

The Investment Corporation, based on the recognition that emphasizing ESG contributes to the enhancement of the Investment Corporation's medium- to long-term corporate value, will continue to press ahead with environmental and energy-saving measures at the portfolio properties as well as initiatives with consideration for various social demands.

For the Investment Corporation's ESG policy, please refer to the following.

*The Investment Corporation's policy regarding ESG: https://www.daiwa-office.co.jp/en/esg/index.html

- End-

*Website URL of the Investment Corporation: https://www.daiwa-office.co.jp/en/