Where green meets green

Decarbonization has become a priority among some real estate owners as they seek to prepare their investments for future profitability. Property managers should pay close attention to owners’ decarbonization push because it’s increasingly tied to mandatory building outcomes rather than just voluntary sustainability goals.

Building performance standards (BPS) are spreading across U.S. cities and states, requiring existing buildings to meet increasingly stringent energy or emissions thresholds over time—policies that directly influence operating practices, capital plans, and leasing strategies.

Noncompliance now carries real budgetary risk: New York City’s Local Law 97 assesses $268 per excess metric ton of carbon dioxide equivalent (CO₂e) annually, while under Washington, D.C.’s Building Energy Performance Standards (BEPS), the district can levy penalties up to $10 per square foot per cycle—costs that property teams can avoid through proactive monitoring, tuning, and upgrades.

At the same time, decarbonization can reduce operating costs. The U.S. Department of Energy’s 2024 report “Decarbonizing the U.S. Economy by 2050: A National Blueprint for the Buildings Sector” projects more than $100 billion in annual energy cost savings sector-wide as efficiency, electrification, and demand flexibility scale.

What’s decarbonization, and how is it different from energy efficiency?

Energy efficiency and decarbonization are often discussed together, but they’re not the same goal. Energy efficiency is about delivering the same—or better—level of building service with less energy. It focuses on energy intensity (kWh or kBtu per square foot) and aims to eliminate waste in operations through tuning, controls, and equipment upgrades.

Decarbonization, by contrast, targets the greenhouse gas emissions associated with building energy and refrigerants—Scopes 1, 2, and, increasingly, tenant-related Scope 3, as defined by the Greenhouse Gas Protocol. (Learn more about the scopes in the sidebar below.) It includes efficiency but reaches further: fuel switching and electrification, clean power procurement, refrigerant management, and even embodied carbon considerations in major renovations.

Energy efficiency and decarbonization are mutually reinforcing. Efficiency involves cutting load so that electrification systems and renewables can be smaller and more cost-effective. Decarbonization sets the destination—net‑zero emissions and compliance with BPS—while efficiency provides the primary pathway. A building can be efficient yet still carbon-intensive if it relies on fossil fuels or a carbon-heavy grid. Conversely, an inefficient low-carbon building can be expensive to operate and strain the grid. The best programs do both—reduce energy use and transition to cleaner energy sources—sequenced through a practical roadmap that aligns with asset lifecycles.

The property manager’s role

Property managers sit at the center of this work. On the efficiency front, their daily decisions shape outcomes. Working with teams and service providers to optimize building management system schedules, temperature and pressure resets, as well as economizer logic, can deliver sizable savings without capital outlay. Routine preventive maintenance—clean coils, calibrated sensors, functioning valves, and variable frequency drives (VFDs)—prevents the small faults that snowball into energy waste.

Brenton Neve, CPM^®

“Effective preventive maintenance is fundamental to creating a culture of efficiency,” says Brenton Neve, CPM^®, general manager, JLL, and chair of the 2026 IREM Sustainability Advisory Council. “As property managers, we establish preventive maintenance schedules, verify task completion, and guide teams to ensure that filters, sensors, and control systems remain in optimal condition. A disciplined approach to preventive maintenance reduces waste, mitigates operational peaks, extends asset life, and supports decarbonization goals.”

Lighting retrofits and task tuning, along with simple plug-load controls and after-hours protocols, round out the operational playbook. Just as important is performance management: benchmarking (e.g., via ENERGY STAR^® Portfolio Manager^®), tracking energy intensity, capturing utility incentives, and aligning findings with capital planning. When occupants are engaged—clear setpoint policies, green fit-out standards, and transparent after-hours processes—efficiency gains stick.

Decarbonization expands the property manager’s responsibility into strategy and capital planning, even if final approvals sit elsewhere. Electrification readiness—planning for heat pumps, dedicated outdoor air systems with heat recovery, domestic hot water heat pumps, and the accompanying electrical capacity—often begins with an operational assessment that managers can lead. Refrigerants matter, too. Be sure to inventory equipment, watch for leaks, and favor alternatives at the end of life that can materially lower emissions. On-site renewables and storage are increasingly viable. Property managers help by ensuring roofs are solar-ready, coordinating interconnection steps, and preparing buildings for demand flexibility.

Energy sourcing is another lever. While portfolio teams may negotiate green tariffs, community solar, or power purchase agreements (PPAs), managers ensure metering and data integrity so that emissions claims are credible. That same data discipline underpins compliance with Building Performance Standards and disclosure ordinances—accurate records, ready documentation, and workable corrective action plans. Leasing is the connective tissue, and green lease provisions can enable cost recovery for efficiency and electrification measures, require data sharing, and set commissioning standards for tenant improvements. Day to day, managers influence tenant-driven emissions through policies, lease administration, and engagement.

What does success look like?

Success in efficiency looks like lower energy use intensity, improved comfort, fewer hot/cold calls, better ENERGY STAR scores, and an uplift to NOI. Success in decarbonization looks like declining Scope 1 and 2 emissions, fewer fossil systems over successive replacements, credible progress on performance targets, regulatory compliance, and more resilient operations. The sequence is straight-forward but powerful: Start with no‑ and low‑cost operational tuning and retro‑commissioning, move into targeted capital (lighting, VFDs, heat recovery), and then execute electrification and clean power procure-ment—guided by a building‑specific roadmap. Property managers are the operational engine that turns strategy into measurable results, de-risking capital projects through tight O&M and trustworthy data.