In recent years, the office market has recognized the importance of factors such as environmental performance and comfort, as well as location and rent.
This report provides a quantitative evaluation of the additional value of 'NEBs' (non-energy benefits) beyond energy-saving effects and illustrates, through case studies, the specific impact on enhancing asset value and shortening investment payback periods.
In recent years, the domestic and international office markets have been on a recovery trend following the COVID-19 pandemic, and particularly in Tokyo, the supply-demand balance remains healthy, with a growing willingness among companies to invest in human resources and to improve workplace environments. The competitive axis for office buildings has evolved from “location and rent” to “comprehensive value creation,” with greater emphasis now placed on soft aspects such as environmental performance, disaster resilience, comfort, and convenience, making non-energy benefits such as health and productivity improvement, as well as BCP, important factors in investment decisions.
In the real estate sector, obtaining ESG certifications is becoming increasingly common, with certifications such as LEED, BREEAM, and WELL expanding to evaluate not only environmental performance but also health, well-being, and management systems. In Japan, certifications such as CASBEE, BELS, and DBJ Green Building are becoming more widespread, and are increasingly utilized by companies and property owners conscious of ESG investment. These certifications are strengthening their role in evaluating not only environmental performance but also social value and governance, thereby contributing to sustainable value creation.
This report focuses on NEBs (Non-Energy Benefits), which are the additional effects gained from energy efficiency and decarbonization initiatives beyond energy savings. NEBs encompass a variety of benefits, including health promotion, enhanced intellectual productivity, reduced maintenance costs, community contributions, branding, reduced carbon emissions, environmental certification and rating acquisition, business continuity planning (BCP)/risk avoidance, talent acquisition and retention, internal awareness, financing, advertising and promotion, and property value enhancement. These tools provide a more comprehensive visualization and quantification of a building's value—value that could not be fully assessed by traditional utility cost savings alone.
Furthermore, enhancing of NEBs directly contributes to the improvement of asset value through increased tenant satisfaction and productivity, improved occupancy time, higher rent premiums, higher renewal rates, reduced cancellations and vacancies, shorter leasing periods, and stabilized occupancy rates. It also contributes to cost reductions n maintenance, repairs, and insurance premiums, achieving stabe cash flow, improved capital efficiency, and reduced risk.
This report presents specific examples of how NEBs contribute to increasing building value and shortening investment payback periods through quantitative evaluation methods and actual new construction and renovation cases. For companies and investors aiming to enhance the value of office buildings and real estate, the evaluation and maximization of NEBs will be a key to strengthening competitiveness and achieving sustainable management, as demonstrated from both theoretical and practical perspectives.
Takaumi Tamura
Partner
Deloitte Tohmatsu Consulting LLC
Ayumu Shimizu
Director
Deloitte Tohmatsu Consulting LLC
Yuichi Sunaga
Senior Manager
Deloitte Tohmatsu Consulting LLC