APPENDICES
INTRODUCTION
ENVIRONMENTAL
CORPORATE CITIZENSHIP
GOVERNANCE AND TRANSPARENT REPORTING
About this Report
Technology and Innovation Partners
GRI Content Index
Data Tables
Forward-Looking Statements
Third-Party Verification
ISSB Index
References and Remarks (Unless otherwise specified, references are made to sections of the 2025 Sustainability Report)
Metrics
WATER MANAGEMENT
Water withdrawal data coverage as a percentage of (1) total floor area; and (2) floor area in regions with High or Extremely High Baseline Water Stress, by property sector (1) Total water withdrawn by portfolio area with data coverage; and (2) percentage in regions with High or Extremely High Baseline Water Stress, by property sector Like-for-like percentage change in water withdrawn for portfolio area with data coverage, by property sector Description of water management risks and discussion of strategies and practices to mitigate those risks
(1) Total water consumption data coverage from the ESRT operational portfolio, as a percentage of total/gross floor area, was equal to 100% in 2025. (2) 0%
(1) ESRT’s total 2025 water consumed by portfolio area with data coverage was equal to 484,748 m 3 (2) 0.0%
Like-for-like change in water consumption for the total portfolio was 6% increase in 2024-2025.
Empire State Realty Trust strives to reduce water usage and promote conservation efforts by implementing water conservation initiatives including installing ultra- low flow plumbing fixtures and utilizing efficient cleaning and landscaping practices. This policy applies to all existing assets. ESRT’s water management policy is broken down by asset-level baseline and performance requirements. The baseline requirements entail the identification of current sources and end uses of potable water at the asset, obtaining billing information—such as account and water meter numbers, and metering locations—tracking water usage through ENERGY STAR Portfolio Manager (ESPM) profiles, and using a water intelligence tool, Wint, to identify potential leaks, monitor water use, analyze water use trends, and identify abnormal consumption trend in real time. 100% of our commercial office and multifamily portfolio has implemented this smart technology. ESRTs performance requirements seek to maintain these baseline requirements and build upon them by setting and tracking performance goals, ensuring the ESPM profiles are being updated and water conservation best practices are in place, fixing identified leaks, installing high efficiency low-flow fixtures or retrofit low-flow aerators/fixtures where appropriate and feasible, and engaging with tenants.
MANAGEMENT OF TENANT SUSTAINABILITY IMPACTS (1) Percentage of new leases that contain a cost recovery clause for resource efficiency related capital improvements; and (2) associated leased floor area, by property sector
(1) (2) 100% of ESRT's new leases for office and retail tenants contain cost recovery clauses for energy efficiency upgrades that benefit the tenant. This equates to one million rentable square feet of newly leased office and retail space covered by such language in 2025. 0.0% of ESRT's residential leases contain cost recovery clauses for energy efficiency upgrades that benefit the tenant.
Percentage of tenants that are separately metered or submetered for (1) grid electricity consumption; and (2) water withdrawals, by property sector Discussion of approach to measuring, incentivizing and improving sustainability impacts of tenants
(1) Empire State Realty Trust submeters 100% of office and retail tenants for grid electricity consumption across the portfolio. 100% of multifamily tenants are separately metered for grid electricity consumption. (2) ESRT submeters 0.0% of office, retail, and residential tenants for water withdrawal.
Tenants are a top priority at ESRT as we create healthy, productive, and sustainable built environments. The investments and adjustments to ESRT’s practices are geared toward achieving quantifiable improvements in energy efficiency, carbon emissions reductions, water efficiency, waste diversion, and healthy buildings. Annual tenant satisfaction surveys are performed portfolio-wide by a third party, in addition to engaging with tenants through townhalls and sustainability focused education seminars, to assess property management and sustainability at ESRT. In tandem with tenants, ESRT also developed customized Tenant Sustainability Programs and initiatives and works to maintain tenant communications through in-person meetings, conversations, outreach, and emails. ESRT’s Tenant Sustainability Toolkit and Waste Management Guide, located on ESRTs website, provides tenants with further insight into the sustainability efforts being done across the portfolio.
76 EMPIRE STATE REALTY TRUST 2025 CORPORATE SUSTAINABILITY REPORT
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