For much of the past decade, sustainability in commercial real estate was defined by ambition. Net-zero targets, long-range road maps and aspirational commitments were designed to signal intent to investors and tenants alike.
That phase is ending.
Today’s owners are operating in a more pragmatic environment, shaped by capital discipline; tighter underwriting; and tenants who expect sustainability to show up in building performance metrics, not just press releases. The question is no longer whether sustainability matters — it’s which strategies will endure, how capital should be prioritized, and how execution is evolving at the portfolio level as ESG requirements and tenant expectations converge.
What actually scales
The sustainability initiatives gaining durable traction share a common trait: They are operationally grounded and economically rational.
Energy efficiency remains foundational. Controls optimization, LED and lighting retrofits, and advanced HVAC modernization are now core asset management decisions. These upgrades reduce utility costs, enhance tenant satisfaction, and future-proof assets against regulation and pressure on operating margins.
Industry participants increasingly view these investments as part of broader efforts to manage operating expenses, maintain tenant retention and improve long-term asset competitiveness. Energy performance is also becoming more closely tied to operational strategy as owners respond to evolving regulatory requirements and tenant expectations.
Electrification and decarbonization planning are next. Building owners increasingly treat electrification infrastructure — including upgraded electrical systems and support for future electrified loads — as a strategic advantage as regulatory requirements evolve and tenants place greater focus on building sustainability and long-term operational efficiency.
Outside the building, electric vehicle (EV) charging infrastructure is also becoming increasingly common across office and mixed-use portfolios as tenants place greater focus on electrification readiness and mobility access. KBS, for example, partnered with EVPassport, an EV charging solutions provider with a growing charging network, to increase the number of EV charging stations across its class A portfolio. This type of relationship supports tenant demand, portfolio electrification readiness and long-term asset flexibility. In addition, it helped the firm surpass its initial target of reducing scope 1 and scope 2 emissions by 5 percent over five years. These demonstrate the type of commitment to sustainability tenants and investors are now seeking from owners.
Water stewardship and resilience planning are also rising in importance. Owners in climate- exposed geographies are increasingly factoring water efficiency and resilience measures into capital planning as part of regulatory alignment and portfolio risk management, along with indoor air quality. KBS’s portfolio contains 28 UL Healthy Air Certified properties.
What is falling away are bespoke, high-cost point solutions that lack scalability or a clear operational payoff. Institutional capital is gravitating toward repeatable, measurable strategies with defensible returns.
Capital gets selective
With capital under scrutiny, sustainability investments are now evaluated the same way any other allocation would be: through the lens of expected return, risk mitigation and durability.
Leading owners prioritize projects with clear payback periods, measurable operating savings, and the ability to reduce exposure to future regulatory or energy cost volatility. This operational framing is essential as sustainability becomes integral to strategic planning.
Equally important is timing. The most effective programs anchor sustainability upgrades to lifecycle capital events, replacing systems at end of life, and aligning with repositioning work to reduce incremental cost and minimize disruption.
Data is also doing more of the work. Portfolio benchmarking allows owners to sequence investments intelligently, moving first where intensity, tenant demand or regulatory traction justifies acceleration, while deferring lower-priority assets without losing long-term momentum. In 2025, KBS achieved the WELL Health-Safety Rating at 33 properties totaling nearly 12 million square feet of space, and one of the firm’s client portfolios of funds and
separate accounts achieved three Green Star designations from GRESB for the second year in a row. Third-party verifications like these deepen the validity of portfolio-wide benchmarking.
The result is a more disciplined, portfolio-wide approach that aligns sustainability with fiduciary responsibility.
Execution at portfolio scale
The next phase of sustainability is less about individual assets and more about how portfolios are managed.
Historically, pilots and discretionary projects drove early progress. Today, owners are standardizing specifications, vendor relationships, performance metrics and reporting frameworks to capture scale efficiencies and ensure comparability across geographies and asset types.
More sophisticated data platforms allow asset managers to monitor performance in near real time, identify gaps and validate outcomes — critical as investors and lenders increasingly expect rigor and measurable outcomes rather than narrative.
At the same time, standards should preserve flexibility. Portfolio standards establish thresholds; local teams adapt based on climate, regulatory context and tenant use.
Tenant demand
The convergence of ESG priorities and tenant expectations is increasingly influencing asset competitiveness and leasing decisions.
Tenants, especially corporates with their own emissions targets, are pressing for assets that meet rising performance expectations. Sustainability is no longer a bonus; in some markets, it is increasingly becoming part of tenant leasing requirements and asset positioning.
Assets that cannot meet evolving operational and emissions expectations risk functional obsolescence — not because they fall short of ideals, but because they cannot support how tenants need to operate.
Tenants want practical outcomes: lower operating costs, transparent performance data and infrastructure ready for what comes next.
What lasts
The sustainability strategies that will prevail are those that are embedded, scalable and financially defensible. Owners who succeed will treat sustainability as an operating discipline integrated into capital planning, supported by data and aligned with tenant needs, rather than as a parallel initiative.
In a market defined by selectivity and capital discipline, execution matters more than ever.
Marc DeLuca is CEO and regional president, eastern United States, of KBS.
Story first published in Institutional Real Estate, Inc.