The new ROI in real estate: Financing forces reshaping value across the asset lifecycle

When I sit across the table from real estate investors to discuss a sustainability project, the conversation usually starts in the same place: upfront cost, payback period, and capital budget. The first question is almost always, “How much will this cost?”

It’s a valid question. But it is no longer the right question.

Across global portfolios, sustainability and the energy transition are reshaping what financial performance means for real estate. Returns are no longer defined solely by cost savings. They are shaped by how sustainability influences income, risk, and the cost of capital. The investors who recognize this shift are not just reducing expenses. They are using sustainability to drive value across the entire asset lifecycle, unlocking a new category of profitability.

The more meaningful question to ask is, “What value will this create?”

Property valuation is straightforward in theory. Divide net operating income by the capitalization rate, and you arrive at value. At a 6.25% cap rate, every USD 1 increase in NOI creates USD 16 in asset value.

Now consider the same equation through a sustainability lens. A USD 5 investment in an energy-efficiency upgrade that increases NOI by USD 1 already creates more than three times its cost in value. When paired with lower financing costs, stronger occupier and buyer demand, and potential cap rate compression, the impact compounds into a repricing event.

This is where ROI shifts. Traditional ROI focuses on payback and cost recovery. A modern ROI captures value across income, risk, and capital markets, reflecting how sustainability influences not only operating performance but also the pricing of debt and equity.

At the portfolio level, the effect is amplified. A USD 50 million decarbonization program across 20 assets may reduce utility costs, but that is only part of the story. If it increases portfolio NOI by USD 5 million annually, implied value creation exceeds USD 71 million at a 7% cap rate. If it also unlocks sustainability-linked financing, reduces regulatory exposure, and strengthens exit positioning, the financial impact extends well beyond the initial investment.

The green premium may have narrowed, but the brown discount is accelerating. Assets that fail to adapt are being repriced in real time.

These dynamics are further accelerated by broader market pressures that are forcing action.

1. Refinancing and capital markets pressure

USD 2.4 trillion in commercial real estate debt is maturing over the next two years. In a higher-rate and more risk-sensitive environment, refinancing outcomes are increasingly tied to asset performance, efficiency, and resilience. Small differences in risk profiles are translating into meaningful differences in the cost of debt and valuation.

2. Shifting demand and asset requirements

At the same time, demand is shifting. Senior housing is expanding as demographics change. Office markets are evolving toward higher power density and compute-ready infrastructure. AI is reshaping nearly every asset class, and data centers have introduced massive opportunity alongside critical power constraints. Retrofit strategies have moved from discretionary to essential, ensuring assets can meet these next-generation requirements. In turn, financing those retrofits is critical to preserving liquidity and maintaining valuation stability.

3. Externalities becoming financial variables

Externalities that once sat outside traditional underwriting, such as grid instability, extreme weather, water constraints, and community expectations, now directly influence operating performance and asset value.

4. Insurance as a financial signal

Insurance has also emerged as a pricing mechanism. Insurers are engaging earlier in transactions, increasingly shaping feasibility, financing terms, and asset liquidity. Assets with strong efficiency and resilience profiles secure more favorable coverage and pricing; those exposed to physical climate risk or operational volatility face rising premiums, reduced coverage, or, in some cases, challenges to insurability altogether.

In today’s market, greater value comes from how sustainability reshapes the capital stack. Even modest improvements in financing terms can exceed operational savings.

We are seeing this play out in several ways:

• Lower cost of debt: Green-aligned assets often qualify for preferential lending terms, with even a 10–25 basis point reduction saving millions over a hold period.
• Stronger DSCR: Lower and more predictable operating costs improve debt service coverage, supporting more favorable financing and driving equity returns.
• Expanded capital access: Green loan programs reduce interest rates while increasing the pool of available capital.
• Exit pricing power: Buyers increasingly price sustainability and climate risk into acquisition decisions, with more sustainable assets trading at better cap rates.

Taken together, these dynamics aren’t just reducing operating expenses (OpEx); they are lowering the weighted average cost of capital (WACC). WACC remains one of the most powerful drivers of investment performance, and sustainability is increasingly a direct lever for influencing it.

One of the biggest hurdles to implementation I see across portfolios is not a lack of opportunity but limited capital for energy projects. Even when the economics are compelling, these investments often struggle to compete for budget. Financing is what unlocks implementation, and the way a project is financed is often more important than the amount of capital deployed.

Effective owners are not choosing a single financing vehicle; they are stacking complementary structures to maximize capital efficiency across a portfolio. We typically recommend doing this in a few ways:

• Portfolio aggregation: Bundle projects across facilities and phases to improve credit quality, financing terms, and execution efficiency
• Off-balance-sheet preference: Maximize the use of third-party capital structures to preserve debt capacity
• Blended capital stack: Layer grants, incentives, and green bank capital to reduce the overall cost of capital
• Performance-based repayment: Align financing with energy savings, operational benefits, and measurable outcomes
• Tenant inclusion: Deploy structures that overcome split incentives and enable tenant-operated facilities to participate
• Phased capital deployment: Align financing with audit, design, and implementation milestones to reduce risk and improve capital efficiency

Structuring financing this way reframes the work not as a series of discrete projects but as a long-term strategy.

Within this framework, performance-based financing structures are emerging as some of the most effective and widely adopted tools for execution. They directly address one of the most persistent barriers in real estate: the gap between strategy and implementation.

1. ESPC

An often overlooked model, long used in the public sector, is the Energy Savings Performance Contract (ESPC). While not new, it is becoming increasingly relevant for retrofitting aging buildings. Under this model, project cash flows are tied to realized performance, with investments repaid through verified savings and typically structured to generate positive cash flow.

We are seeing growing adoption, signaling broader applicability for private markets. These models shift risk, remove upfront capital barriers, and align incentives more effectively than traditional approaches.

2. ESA

Similar to the ESPC model, an Energy Service Agreement (ESA) is an off-balance-sheet financing model that supports the installation of energy-efficiency or renewable energy systems (such as solar PV, HVAC, controls, and lighting). Projects are delivered without upfront capital requirements and repaid through validated, realized energy savings.

While the private sector has traditionally applied this model to solar PV systems through power purchase agreements (PPAs), this financing structure enables access to larger and more complex program bundles while aligning incentives and reducing capital barriers to implementation.

3. Green financing vehicles and public-private capital

Beyond structured performance contracts, a growing ecosystem of green financing tools is expanding access to lower-cost capital, including green bank loans, Property Assessed Clean Energy (PACE) financing, green bonds, and green revolving loan funds. Organizations such as Sustainable Credit Partners (SCP) provide larger first loans that identify and fund energy-efficiency projects.

These programs often benefit from enhanced credit treatment or policy support that reflects the lower long-term risk of efficiency and resilience investments. The result is improved terms, a reduced cost of capital, and broader eligibility for projects that may not fit traditional underwriting, helping bridge the gap between strategy and execution.

Financial performance in real estate is about more than payback periods and higher asset value. It is the result of how effectively an asset generates income, manages risk, and attracts capital over time. It’s about stronger occupancy, deeper tenant engagement, and making a property more investable.

Sustainability now sits at the center.

Frameworks such as GRESB play an important role in this transition by providing a common framework for understanding sustainability performance. When sustainability data is integrated into capital planning and investment strategy, it becomes a tool for decision-making rather than a reporting exercise. It provides investors with greater transparency into how assets are positioned for long-term performance. It also helps organizations identify priorities for action, and the distinction between those who use GRESB as a reporting exercise and those who use it to drive action will matter significantly.

Execution is where value is realized.

Through our work at GreenGen and my roles at ULI, I see this shift accelerating across global portfolios. The investors leading the market have moved beyond asking, “How much will this cost?” They are focused on asking, “What value will this create?”

That shift, from cost to value, is the new ROI.

This article was written by Brad Dockser, CEO at GreenGen. Learn more about GreenGen Sustainability here.