Why Sustainability Strategies Stall and How Effective Asset-Level Implementation Drives Value
Asset-level implementation determines whether sustainability strategies translate into measurable performance improvements across a portfolio.
However, most implementation approaches remain fragmented and disconnected from portfolio strategies, limiting their ability to deliver consistent results.
As regulatory pressure, investor scrutiny, and capital constraints increase, portfolios that fail to operationalize implementation at the asset level risk higher costs, missed energy savings, and reduced asset competitiveness.
AUTHOR: ZACHARY BROWN
CONTRIBUTORS: SEAN BIRNBAUM, ANDREA STANISLAV
REVIEWERS: CARLI SCHOENLEBER, PAULYNN CUE
MAY 6, 2026Executive Summary
Many real estate sustainability strategies stall not because of a lack of ambition, but because portfolios lack a structured approach to asset-level implementation.
In practice, successful implementation is determined by three factors:
Whether the right projects are prioritized
Focus on assets with the highest regulatory exposure, cost savings potential, and emissions impact, while aligning with broader capital planning.
Whether implementation is structured and coordinated across assets
Ensure sustainability, asset management, and operations teams are working from a shared plan, with clear responsibilities, stakeholder engagement strategies, and project sequencing.
Whether performance is measured and linked to reporting and investment decisions
Define measurement methodologies, validate sustainability and financial data, and use those insights to build buy-in and refine decision-making over time.
Implication
Portfolios should prioritize building the operational capability to implement at the asset level — focusing on prioritization, execution, and measurement — rather than continuing to set portfolio-level targets without a clear plan for how they will be delivered across assets.
Table of Contents
The Implementation Gap in Real Estate Decarbonization
Why do Sustainability Strategies Stall at the Asset Level?
What Happens If You Delay and Why It Matters Financially
How to Close the Implementation Gap
Step 1: Identify and Prioritize the Right Projects
Step 2: Execute Retrofit Projects at Scale
Step 3: Measure Performance and Demonstrate Results
The Implementation Gap in Real Estate Decarbonization
Decarbonization progress in commercial real estate (CRE) is increasingly defined by the ability to implement strategies at the asset level.
As discussed in our 2026 trends article, Verdani’s 2026 Sustainability Trends: 10 Signals Defining the ESG Implementation Era, policymakers and investors are accelerating expectations for building decarbonization. The 30th Conference of the Parties (COP30) was widely framed as the “Implementation COP,” signaling a shift from commitments to execution.
In the U.S., the majority of CRE emissions come from existing buildings, making performance improvements critical to meeting climate targets. Despite this, implementation of decarbonization strategies across CRE building stock continues to lag.
“The size of the existing [U.S.] building stock, the relatively small amount of annual construction, and the fact that building stock turns over extremely slowly — about 80% of global buildings standing today will still exist in 2050 — mean decarbonizing real estate will require much more than decarbonizing new construction. It will require retrofitting existing buildings to be low- or zero-carbon.”
Globally, the United Nations states that achieving Paris Agreement targets will require increasing global retrofit rates from ~1% to 2.5-5% annually by 2030, including extensive updates to insulation and HVAC systems, alongside the addition of passive and nature-based solutions to decrease energy demand.
At the same time, market pressure is increasing:
By 2030, demand for low-carbon buildings is projected to exceed supply by 3x, according to JLL
Investor scrutiny is increasingly tied to demonstrated operational performance and progress toward net zero targets (as explored in our 2026 GRESB reporting strategy analysis)
Building Performance Standards (BPS) are expanding across U.S. jurisdictions, increasing compliance requirements
In markets like New York City, Boston, and Washington, D.C., the financial implications are already material. Under Local Law 97 in New York City, non-compliant buildings currently face penalties of up to $268 per ton of CO₂ above emissions limits, which can translate into millions of dollars annually for large assets.
Despite this convergence of regulatory, financial, and market pressure, many portfolios still struggle to translate sustainability strategy into consistent action at the asset level.
Why do Sustainability Strategies Stall at the Asset Level?
1. Asset-level implementation introduces complexity
Asset-level implementation — the structured execution of portfolio-level sustainability strategy at the building level — becomes significantly more complex as sustainability goals move into operational execution across assets.
The challenge is rarely defining sustainability goals — it is executing them consistently across assets.
Each building operates under unique constraints. Differences in systems, tenant requirements, capital planning cycles, regulatory exposure, and utility programs shape what can be implemented, when, and how.
Key constraints include:
Capital availability and investment timing
Access to financing and incentives
Data availability and system visibility
Tenant-landlord alignment
Vendor capacity and supply chain constraints
Regulatory requirements across jurisdictions
These factors often conflict. A technically viable project may not align with budget cycles. A financially attractive upgrade may be delayed due to tenant constraints. Regulatory pressure can create urgency without a clear execution pathway.
The result is a consistent pattern: strong portfolio-level ambition, but uncertainty around how to prioritize assets, allocate capital, and move building-level projects forward.
2. Fragmented implementation approaches prevent consistent execution
Beyond asset-level complexity, implementation often falls short because portfolios default to fragmented approaches rather than a structured, coordinated, and integrated execution model.
In most portfolios, implementation of ESG strategy is:
Treated as a series of individual projects rather than a coordinated, portfolio-wide process
Disconnected from capital planning
Executed by multiple teams and vendors without a unified framework
Separated from performance tracking and reporting requirements
As a result, projects move forward, but progress is slow and uncoordinated, resulting in portfolios failing to capture the full potential of measurable, portfolio-wide outcomes.
Leading companies take a different approach. They establish a structured execution model that integrates strategy, capital planning, and performance tracking across assets.
| Implementation Area | Typical Failure Point | What Effective Implementation Looks Like |
|---|---|---|
| Strategy to execution | Portfolio-level strategies do not translate into clear, site-specific actions, leaving asset teams without a defined plan to implement | Strategy is translated into actionable, building-level plans with clearly defined scope, sequencing, timelines, and ownership at the asset level |
| Alignment with firm goals | Projects are selected independently of ESG strategy, capital planning, or broader investment priorities, limiting overall portfolio impact | Implementation is aligned with portfolio priorities, ESG strategy, capital planning cycles, and long-term investment objectives |
| Vendor model | Execution is driven by vendors, engineers, or energy service companies focused on individual projects, often promoting specific technologies or solutions rather than portfolio outcomes | Decisions are based on achieving cohesive performance, financial, and decarbonization outcomes across the portfolio |
| Coordination | Responsibilities are fragmented across sustainability teams, asset managers, property teams, and vendors, leading to delays, misalignment, and gaps in execution | Implementation is actively coordinated across internal teams and external partners, with clear roles, accountability, and centralized oversight |
| Data and reporting | Projects are completed without clear linkage to performance tracking, investor reporting, or regulatory requirements, limiting visibility into outcomes | Performance tracking, measurement, and reporting are built into implementation from the outset, enabling clear validation and communication of results |
| Scalability | Approaches vary by building, making it difficult to replicate success or scale implementation across the portfolio | Implementation follows a repeatable, portfolio-wide framework that enables consistent execution and scaling across assets |
Implication
Portfolios relying on fragmented, project-by-project approaches are unlikely to achieve consistent, portfolio-wide outcomes. A coordinated, portfolio-level execution model is required to align strategy, capital planning, and performance into measurable results.
What Happens if Implementation is Delayed and Why It Matters Financially
Delays in asset-level implementation increase both cost and risk over time.
When projects are not executed in a coordinated and timely way, portfolios face compounding impacts. Delays in prioritization or budgeting quickly translate into higher costs, missed savings, and reduced performance.
Across portfolios, even a one- to two-year delay in implementation can result in:
Higher retrofit costs as timelines compress under regulatory deadlines
Missed opportunities to capture energy savings and net operating income (NOI) improvements
Increased exposure to penalties under BPS
Reduced flexibility in capital planning and project sequencing
Case Study: Bundling Energy Upgrades into Capital Projects to Capture Long-Term Value (Source: RMI).
| Scenario | Impact | Why It Matters |
|---|---|---|
| A Class B office tower in Tampa implemented phased energy upgrades over 10 years, integrating improvements into tenant renewals and capital projects | 50% reduction in energy use ~$79,620 in monthly energy savings Increased asset value at sale LEED Gold and BOMA 360 certifications |
Bundling upgrades into capital projects enabled energy savings and asset value to compound over time, while phased execution ensured efficient delivery within capital and operational constraints |
Implication
Delays in implementation increase costs, reduce flexibility, and heighten regulatory and financial risk, limiting the ability to capture energy savings, avoid penalties, and align projects with capital planning.
Closing the gap between strategy and execution requires more than better project management — it requires a fundamentally different approach to implementation.
Instead of treating implementation as a series of isolated projects, it is more effective to build a structured, repeatable operating model that integrates strategy, capital planning, execution, and performance tracking across assets.
In practice, this comes down to three steps:
Identify and prioritize the right projects based on performance data, risk exposure, and financial impact
Execute retrofit projects at scale through coordinated planning, vendor management, and capital alignment
Measure performance and demonstrate results to validate outcomes and support reporting
Together, these steps provide a practical framework for translating portfolio sustainability strategy into consistent, asset-level execution.
Step 1: Identify and Prioritize the Right Projects
Prioritization determines where asset-level implementation will deliver the greatest impact.
Effective implementation begins with structured, portfolio-wide prioritization. Rather than evaluating buildings individually, leading portfolios use data, risk exposure, and financial criteria to focus resources where they will have the greatest impact.
Rather than evaluating buildings individually, leading portfolios use data, risk exposure, and financial criteria to focus resources where they will have the greatest impact.
1. Establish a performance baseline
The process begins with understanding current performance across the portfolio, including:
Energy consumption and utility data
Emissions calculations
Benchmarking using tools such as ENERGY STAR Portfolio Manager
This baseline provides the foundation for identifying underperforming assets and tracking improvement over time.
2. Assess risk and identify opportunities
Once a performance baseline is established, portfolios must evaluate where action is most urgent and impactful, especially regarding transition and regulatory risk.
Priority assets typically include those with:
High exposure to BPS or decarbonization targets
Significant gaps between current and target performance
3. Evaluate feasibility and constraints
Identified projects must be evaluated not only for potential impact but also for feasibility within real-world constraints.
Key considerations include:
Cost and savings potential
Operational disruption
Remaining useful life of systems
Alignment with portfolio goals
4. Align with financial and investment strategy
Prioritization must also reflect investment realities.
Incorporate factors like:
Return on investment (ROI)
NOI impact
Avoided penalties under BPS
Asset repositioning and value creation potential
This ensures that implementation decisions are aligned with broader capital planning and portfolio strategy.
Case Study: Prioritizing High-Risk Assets Based on Regulatory Exposure and Financial Impact (Source: Retrofit Playbook)
| Scenario | Impact | Why It Matters |
|---|---|---|
| A New York City multifamily asset planned an electrification update as its natural gas system reached end-of-life while facing upcoming LL97 emissions requirements | ~$3.7M net present value supported by avoided fines and incentives | Regulatory exposure and capital planning drove prioritization Focused investment on a high-risk asset with clear ROI |
Implication
Prioritization should be driven by a combination of performance data, regulatory exposure, feasibility, and financial impact — ensuring resources are focused where implementation will deliver the greatest value and most achievable results.
Step 2: Execute Retrofit Projects at Scale
Execution determines whether prioritized projects translate into measurable results.
This is where most portfolios experience delays, as implementation requires coordination across internal teams, external partners, and capital planning processes.
This is where most portfolios experience delays, as implementation requires coordination across internal teams, external partners, and capital planning processes.
How do portfolios ensure internal alignment for execution?
Successful implementation begins with alignment across internal teams. Sustainability, asset management, and operations must work from a shared plan with clear priorities, timelines, and accountability.
This includes:
Clear project ownership and accountability
Alignment with CapEx and OpEx planning cycles
Integration of sustainability into asset-level business plans
Consistent KPIs and reporting expectations
What is required to coordinate execution across vendors and stakeholders?
Execution depends on effective coordination with vendors, contractors, financing partners, and property teams.
Core execution activities include:
Vendor sourcing, selection, and contract management
Defining roles, responsibilities, and timelines
Coordinating across stakeholders
Preparing site and operations teams for implementation
How should retrofit projects be sequenced across a portfolio?
Instead of treating projects as one-off efforts, portfolios should coordinate implementation across assets based on timing, capital availability, and operational constraints.
In practice, this includes:
Aligning projects with capital planning cycles
Sequencing upgrades to minimize disruption
Bundling projects to improve efficiency
Advancing projects in phases based on priority and feasibility
How do portfolios maintain momentum and scale execution?
Execution requires a bias for action. Prioritized projects must move forward consistently, with clear ownership and ongoing coordination.
Portfolios that establish structured, repeatable execution processes are better positioned to scale sustainability initiatives across assets — turning strategy into consistent, portfolio-wide progress.
Case Study: Executing Decarbonization Retrofit Through Capital Planning and Phased Implementation (Source: Retrofit Playbook)
| Scenario | Impact | Why It Matters |
|---|---|---|
| A 1.4M SF office tower integrated energy and electrification upgrades into a major redevelopment, aligning sustainability initiatives with a broader capital repositioning | ~60% reduction in site energy use intensity Net present value-positive with decarbonization measures ~17.9% estimated internal rate of return with incentives Annual ROI projected to increase to 18-19% by 2035 |
Decarbonization was integrated into a broader redevelopment project A phased approach enabled upgrades to be sequenced over time, improving feasibility |
Implication
Execution success depends on coordination. Portfolios must align teams, vendors, and capital planning processes to consistently move prioritized projects from planning to completion.
Step 3: Measure Performance and Demonstrate Results
Measurement determines whether implementation delivers measurable results.
Asset-level implementation must be supported by clear measurement and verification (M&V) processes to ensure that projects deliver expected outcomes and that performance can be communicated with confidence.
Sustainability projects deliver the greatest value when performance can be measured, verified, and communicated with confidence.
1. Define the measurement methodology
Effective measurement begins before implementation.
Portfolios must define:
How performance will be tracked
Which metrics will be used
How results will be validated
How outcomes will be reported internally and externally
Without a defined methodology, performance cannot be consistently verified, compared across assets, or communicated effectively.
2. Collect and validate performance data
Once projects are implemented, performance must be tracked over time to confirm that expected outcomes are achieved.
This includes:
Tracking energy consumption and emissions performance
Validating operational savings and system improvements
Comparing actual performance against projected outcomes
Strong programs embed this into core processes:
Portfolio-level dashboards
Investor reporting frameworks
Regulatory disclosures
Ongoing asset management workflows
Investors and regulators increasingly expect asset-level validation of performance, requiring portfolios to demonstrate both sustainability and financial outcomes.
3. Leverage results to improve and scale
Measurement is not only about validation — it enables portfolios to improve decision-making and scale implementation.
Leading organizations use performance data to:
Identify repeatable retrofit strategies
Apply successful approaches across similar assets
Refine prioritization and execution processes
Build internal confidence in sustainability investments
Effective asset-level implementation delivers measurable outcomes such as:
Reduced energy consumption and greenhouse gas emissions
Improved NOI through operational savings
Compliance with BPS and regulatory requirements
Enhanced asset value and competitiveness
Over time, this creates a feedback loop where performance data informs better decisions, turning implementation into a continuous, portfolio-wide capability.
Case Study: Measuring and Validating Asset-Level Performance to Demonstrate Results (Source: ESRT 2024)
| Scenario | Impact | Why It Matters |
|---|---|---|
| Empire State Realty Trust implemented portfolio-wide M&V processes, investment-grade audits, and retro-commissioning across assets | ~51% energy and 59% emissions reduction at the Empire State Building since 2007 41% energy and 49% emissions reduction across the commercial portfolio since 2009 Positioned to meet LL97 requirements through 2034 |
Standardized M&V: • Makes performance credible • Demonstrates the economic payback • Supports compliance • Enables long-term roadmap planning |
Implication
Measurement enables accountability and scale; without asset-level performance tracking, portfolios cannot verify results, meet reporting expectations, or replicate successful implementation strategies.
Demonstrating effective implementation is now a defining factor in sustainability performance.
Portfolios that cannot clearly identify, execute, and measure asset-level initiatives are likely to fall behind as regulatory pressure and investor expectations continue to increase.
Evaluate the following questions to test the strength of your implementation strategy:
Do you know which assets are most exposed to BPS penalties or transition risk?
Are you clear on where projects get delayed due to capital constraints, coordination gaps, or unclear oversight?
Do you have a consistent process to execute across assets?
Can you clearly demonstrate results to investors, regulators, and internal stakeholders?
If these questions are difficult to answer, it may reflect a lack of clarity in how sustainability initiatives move from planning to execution across assets.
If these questions are difficult to answer, it may reflect a lack of clarity in how sustainability initiatives move from planning to execution across assets.
The next step is identifying where implementation is breaking down and whether additional structure, coordination, and support may be needed to move projects forward.
Explore Verdani’s Asset-Level Project Support to accelerate implementation across your portfolio.
How Verdani Drives Implementation Outcomes
Many portfolios have strong sustainability strategies but struggle to move from planning to action across assets. Verdani’s Asset-Level Project Support addresses this gap by providing hands-on implementation, acting as an embedded project partner to drive projects forward.
Verdani works across portfolios to prioritize initiatives, coordinate vendors, and manage execution in alignment with capital planning. Rather than treating projects as isolated efforts, implementation is structured, sequenced, and coordinated across asset managers, property teams, and vendors.
Progress is tracked through dashboards and investor-ready reporting, giving portfolios clear visibility into outcomes. Our approach helps owners reduce delays, lowers costs, strengthens compliance, and improves financial and operational performance across assets.
To learn more about our approach, see our March 2026 webinar: Asset-Level Project Support: Decarbonization, Efficiency, and Retrofits
Authors, Contributors, and Reviewers
Zachary BrowN
EXECUTIVE DIRECTOR OF SUSTAINABILITYZach is an Executive Director of Sustainability supporting one of Verdani’s largest clients in advancing their sustainability program. With 14 years specializing in sustainability, he possesses a passion for generating risk adjusted returns for his clients. He specializes in key initiatives such as reporting, net zero, climate resilience and due diligence to deliver results for his client. Zachary holds a B.S. degree in Foreign Language from Hamilton College.
Sean birnbaum
SENIOR DIRECTOR OF ENGINEERINGSean is a Senior Director of Engineering specializing in energy efficiency, renewable energy, and carbon reduction. He has ten years of experience in the built environment field, working in the areas of energy auditing, energy management, HVAC engineering, energy engineering, building automation systems, asset management, and facilities management. At Verdani Partners, he works with multiple clients, leading carbon reduction programs and annual budget recommendations. Sean is also the Co-Chair of Verdani’s Decarbonization Committee, wherein he has been instrumental in building out new service offerings and tools for the company. He holds an Executive MBA from the Quantic School of Business and Technology, an M.S. in Green Technologies from University of Southern California, and a B.S. in Mechanical Engineering from University of Nevada Las Vegas.
andrea stanislav
ASSOCIATE DIRECTOR OF ENGINEERINGAndrea is an Associate Director of Engineering with seven years of experience in data management, reporting, and building performance. She supports one of Verdani’s largest clients in advancing portfolio performance and leads Verdani’s Technical Service projects including ASHRAE energy audits, water audits, indoor environmental quality assessments, and local ordinance compliance projects. She holds a B.S in Environmental Engineering from The Ohio State University.
carli schoenleber
SENIOR COMMUNICATIONS MANAGER, CONTENT & ENGAGEMENT SPECIALISTCarli is a Senior Communications Manager at Verdani Partners, where she leads thought leadership, chairs the Engagement Committee, and serves as primary author for Verdani's nonprofit, the Verdani Institute for the Built Environment. With over a decade of experience in the sustainability field, she bridges research and communications to translate complex issues into persuasive messaging and actionable strategies that drive business value and positive impact. Carli holds a B.S. in Environmental Science, Policy, and Management from the University of Minnesota and an M.S. in Forest Ecosystems and Society from Oregon State University.
paulynn cue
CHIEF COMMUNICATIONS & BUSINESS OFFICERPaulynn is the Chief Communications Officer for Verdani Partners, bringing over 20 years of experience in sustainability and ESG, business development, communications, design, and regenerative development. She has been instrumental in shaping Verdani’s programs since 2014. Paulynn studied architecture at Carnegie Mellon University, advertising at New York University, and environmental design at Parson’s School of Design, and has worked with leading organizations such as Gensler, World Building Institute, and the Intergovernmental Renewable Energy Organization Sustainable Development Commission.
Copyright © 2026 Verdani LLC. All rights reserved. The information contained within this publication was developed using Verdani’s general professional judgment. This publication was prepared without reference to any specific property or scenario and is not intended to substitute for the professional advice of an attorney, engineer, or other climate change professional. Content and data subject to change. Similar outcomes are not guaranteed based on prior results. Neither Verdani LLC nor its employees or agents can be held responsible for the use or misuse of the information contained herein, and Verdani LLC hereby disclaims any liability for damages arising from the use of this information, including without limitation, direct, indirect, or consequential damages including personal injury, property loss, loss of revenue, loss of opportunity, or other loss.
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