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Sustainability Consulting Services
for High-Performance Buildings

Improving ROI and environmental performance for facilities and institutions.

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Markets – Sustainability

Sustainability Services for Every Building Lifecycle

Sustainability Services for New Construction

Building from the ground up provides a powerful opportunity to embed sustainability into every layer of a facility’s design. Our team works alongside owners, architects, and contractors from schematic
design through substantial completion to ensure energy efficiency, environmental performance, and occupant wellness are part of the building from day one.

  • Energy Modeling and Analysis: Whole-building energy simulation to predict performance, validate system selections, and support ASHRAE 90.1 compliance. 
  • Building Envelope Consulting: Comprehensive evaluation of enclosure systems including thermal performance, air barrier continuity, and moisture management to prevent long-term durability issues. 
  • Green Building Certification: End-to-end consulting for LEED®, WELL®, Fitwel®, BREEAM®, and ENERGY STAR® certification pathways.
  • Indoor Air Quality (IAQ) Testing: Pre- and post-occupancy testing for CO₂, TVOC, PM2.5, formaldehyde, and other contaminants to meet LEED and WELL requirements. 
  • Commissioning: Independent third-party commissioning to verify that mechanical, electrical, and plumbing systems perform as designed and meet sustainability targets. 
  • Life Cycle Assessment (LCA): Whole-building LCA for embodied carbon analysis and LEED Materials & Resources credits.

Sustainability Consulting for Existing Buildings

Improving the performance of an existing building is a different challenge than designing a new one. Aging systems, deferred maintenance, evolving codes, and the realities of occupied spaces all require careful planning. We work alongside owners and facility teams to identify the highest-impact opportunities and execute them with minimal disruption.

  • Energy Audits: ASHRAE Level I, II, and III energy assessments to identify waste, quantify savings opportunities, and prioritize capital investments.
  • Retro-Commissioning (RCx): Systematic evaluation and optimization of existing building systems to restore designed performance and reduce energy consumption. 
  • Energy Modeling for Upgrades: Scenario-based modeling to evaluate retrofit options, predict savings, and support capital improvement decisions. 
  • Energy Benchmarking: ENERGY STAR Portfolio Manager benchmarking, local ordinance compliance (LL84/97, BERDO, DC BEPS), and PE verification. 
  • Green Building Recertification: LEED O+M, ENERGY STAR certification, and WELL recertification support including performance period tracking and documentation management.
  • Facility Assessments: Condition and needs assessments to evaluate building systems, identify deferred maintenance, and inform capital planning.

Environmental Consulting for
Operational Efficiency

For commercial real estate owners and operators, sustainability has become central to how buildings are managed, valued, and leased. Regulatory requirements are expanding, ESG reporting expectations continue to grow, and tenants increasingly factor environmental performance into their leasing decisions. Our team works with your operations staff to move beyond compliance and achieve improvements that show up in operating results.

  • Energy Performance Optimization: We identify system-level improvements that reduce energy consumption and lower utility costs. Our approach combines engineering analysis with continuous monitoring through our BalanceCx™ analytics platform to sustain savings over time. 
  • Decarbonization Planning: Together, we assess Scope 1 and Scope 2 emissions, develop electrification roadmaps, and create actionable carbon reduction strategies aligned with Building Energy Performance Standards and net-zero targets.
  • Water Conservation: Fixture analysis, system optimization, and usage tracking to reduce water consumption and lower operating expenses across commercial and institutional facilities.
  • Waste Minimization and Resource Efficiency: Operational analysis to identify waste streams, improve material efficiency, and support sustainability reporting requirements.

Green Building Certifications Support

EEI works closely with our clients to help their facilities achieve a wide range of sustainability-related certifications. Attaining these certifications can be extremely beneficial in helping owners strengthen their leasing opportunities and operational outcomes. See below for more details about our LEED and WELL consulting as well as services related to other certifications:

ENERGY STAR®

Benchmarking, portfolio management, local ordinance compliance, and Professional Engineer (PE) verification for existing buildings and industrial facilities. EEI is an EPA ENERGY STAR Partner of the Year.

LEED®

New Construction, Core & Shell, Retail, Operations & Maintenance. Our team handles energy modeling, commissioning, outdoor air and indoor air quality testing, and complete documentation management — all in-house.

WELL®

WELL Building Standard, WELL Core, and WELL Multifamily consulting with performance verification testing.

Fitwel®

New construction consulting, site work, and documentation support focused on occupant health and productivity.

BREEAM®

Consulting and site assessor services for new construction under one of the world’s leading sustainability assessment frameworks.

Portfolio Sustainability Strategy and Reporting

Another key area of support EEI provides is helping owners track, benchmark and report their sustainability metrics across their entire asset portfolios. This provides exceptional value to groups across commercial real estate, healthcare and higher education. Among the many capabilities we provide in this area are:

  • Master Account Benchmarking
  • Strategy & Implementation Development
  • Sustainability – Stakeholder Education & Training
  • Environmental Reporting, Certifications, and Disclosures

Markets We Serve

Our sustainability team works with owners and operators across a broad range of facility types and market sectors nationwide: 

  • Commercial Real Estate and Mixed-Use Developments
  • Healthcare Facilities and Hospital Systems
  • Higher Education Campuses
  • Federal Government and Public Sector Facilities
  • Manufacturing and Industrial Plants
  • Mission Critical Facilities including Data Centers and Laboratories
  • Aviation, Sports, and Science and Technology Facilities

Why Work with EEI?

EEI is not a documentation management firm that outsources technical work. We are building
performance engineers who execute every discipline in-house — energy modeling, commissioning, IAQ testing, envelope consulting, and building analytics. That matters most when certification reviews surface unexpected issues or when retrofit projects require engineering judgment, not just paperwork. 

  • Pioneer participant in the original LEED Pilot Program
  • Nearly 1,000 LEED certifications delivered globally
  • 26 LEED Accredited Professionals and 37 certified commissioning professionals on staff
  • EPA ENERGY STAR Partner of the Year
  • 100% employee-owned — every team member has a stake in your project’s success
  • 4,000+ building performance projects across 350 million square feet
  • Proprietary BalanceCx™ analytics platform for continuous performance monitoring
  • 40+ years of independent building performance consulting

Frequently Asked Questions

What is sustainability consulting for buildings?

Sustainability consulting helps building owners reduce energy consumption, lower carbon emissions, improve indoor environmental quality, and achieve green building certifications. It encompasses services like energy auditing, commissioning, energy modeling, decarbonization planning, and certification management. The goal is measurable performance improvement that benefits both the building and the people who use it every day.

An independent consultant like EEI has no financial interest in specifying particular equipment or systems. Our recommendations are based solely on what delivers the best performance and return on investment for your facility. This objectivity is especially important for energy audits, commissioning, and certification work where conflicts of interest can compromise results.

EEI provides consulting for LEED (all versions including BD+C, O+M, ID+C, and LEED Zero), WELL, Fitwel, ENERGY STAR, BREEAM, Green Globes, and BOMA BEST. Our team includes 26 LEED APs, Fitwel Ambassadors, and BREEAM-accredited professionals. We manage the full certification lifecycle from registration through appeals.

BalanceCx™ is EEI’s proprietary building analytics platform. It provides continuous monitoring of energy consumption, system performance, and indoor environmental conditions — giving your team real-time visibility into whether your building is maintaining the performance levels required for certifications, benchmarking compliance, and decarbonization targets.

Yes. We work with building owners to navigate BEPS requirements in jurisdictions including New York (LL97), Boston (BERDO), Washington D.C., and Washington State (Clean Buildings Act). Our services include benchmarking, energy audits, decarbonization planning, and compliance
documentation.

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Projects

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Let’s Talk About Your Building’s Future

At EEI, sustainability is not about checking boxes — it’s about creating environments where people, organizations, and our planet thrive. We measure success not just in certifications earned or energy saved, but in buildings that work better for the people who use them every day.

Whether you’re planning a new facility, improving an existing building, or developing a sustainability strategy across your entire portfolio — we’d welcome the conversation. With 40+ years of experience and nearly 1,000 certifications delivered, we can help you find the right path forward.

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