Existing Buildings


You Don’t Have to be the Tallest Building for Others to Look Up to You

Being proactive about sustainability and accessibility will lower operational costs, increase tenant satisfaction, and minimize your environmental footprint.

  • Offices
  • Hotels and Hospitality
  • Retail
  • Restaurants
  • Education
  • Cultural Institutions
  • Recreational Facilities

We know it’s not always easy to decide where to start looking for opportunities to improve the energy efficiency of your buildings.

Whether you need to fulfill local jurisdictional and state mandates, are curious about your portfolio’s energy profile, or looking for a retro-commissioning agent, we will help you to devise the best strategy to address the needs of your building or entire portfolio.

Our energy optimization services for existing commercial properties include:

Energy Benchmarking and Portfolio Review: We use high-quality analytics and visualizations to help you unlock the trends behind your building’s energy use. You will be able to see how your property stacks up against others and identify potential opportunities for improvement.

Energy Auditing: Pinpoint inefficient systems and maintenance practices with a hands-on energy audit and mechanical testing. After an initial audit, we’ll analyze our preliminary recommendations to prioritize a scope of work, discuss the findings with you, as well as recommend the implementation of high-impact improvements.

Retro-Commissioning: As your retro-commissioning agent, we’ll identify mechanical defects, revise operating protocol, calibrate and sequence systems, direct equipment maintenance and train building owners and staff in proper maintenance and operation.

Existing and Historic Building Enclosure Diagnostics: We investigate and evaluate buildings for water leaks, moisture and air migration, and thermal performance. We can assist building owners and design professionals in identifying failures in existing building enclosures through onsite observation, review of existing documents, overseeing probes, and testing. These investigations form the basis of recommendations for remedial work, while also providing valuable information to the design team.

Operations and Maintenance Tools: To ensure ongoing success, we can develop efficient operations and maintenance guidelines and provide training to building management staff. We’ll also coordinate across our network of vendors and assess new technologies for future implementation.

Contact us to discuss your next project

Standout with Sustainability

Commercial properties with green building certifications are more attractive to tenants and buyers alike. Achieving certification for an existing building will not only lead to lowered operating costs and energy use, but can provide a way to standout in the competitive commercial market.
Whether or not your commercial property has achieved green building certification in the past, our sustainability consultants can help you select and navigate the program that is best for your building.
Since each program and project is different, our services are tailored to meet your needs and guide through each step of the process.

Green Building Certification Programs

 We have a broad range of green building certification services that include:

  • Goal setting and project priorities
  • Identify program and potential incentives, as well as any means for compliance
  • Recommend cost-effective energy conservation measures (ECM) to implement as a path to compliance
  • Execute any required commissioning services
  • Green building program applications and submittals

Contact us to discuss your next project

Accessibility is an ongoing effort

Whether you are acquiring a new property, need to train staff on accessibility policies and procedures, or are making alterations to an existing building, we can help you ensure ongoing compliance with mandatory accessibility requirements.


We can help your commercial property comply with accessible design and construction requirements included in:

  • The Americans with Disabilities Act (ADA)
  • State and Local Human Rights Laws
  • International Building Code (IBC)
  • State and Local Building Codes
  • Universal Design

Services for Existing Commercial Buildings

Plan Reviews and Field Inspections: For alterations to existing buildings, we collaborate to help attain full compliance with regulatory requirements for accessible design and construction. We conduct field inspections during all phases of renovations and work with the design and construction teams to help ensure that full compliance is achieved.

Due Diligence: We perform due diligence inspections of existing buildings and sites to identify noncompliance with regulatory requirements for accessible design and construction. Investors can use the results of these inspections to determine the true value of a potential real estate investment; the primary goal of our due diligence services is to protect the interests of our equity investor clients.

Technical Assistance: We aim to deliver consistent and reliable technical assistance on all aspects of accessibility compliance.

Contact us to discuss your next project


See All Commercial Existing Buildings

Why Choose Us?


Top of the Class

We are a leading partner in all New York and New Jersey financial incentive programs. We have been a NYSERDA FlexTech provider since the program’s inception and also provide support through implementation of all projects.



We have provided energy management and building performance services to over 130M square feet of commercial and multifamily buildings, including the execution of over 200 Local Law 87 projects.


Building Science

We actively participate in the Mayor’s Carbon Challenge and regularly engage with the Department of Buildings and the Mayor’s Office of Sustainability. Our team actively gives back to the industry by performing cutting edge research and presenting the findings at regional and national conferences, advancing the state of the art in building performance.


Established History

We are a leading market partner in all NYC energy incentive programs. A partner in NYSERDA’s Multifamily Performance Program since 2007, we have successfully completed over 250 projects—both new construction and existing buildings—and helped our clients secure over $31M in financial incentives.



We have led a variety of U.S. Department of Energy, HUD, NYSERDA, and high profile industry R&D and advisory projects the results of which inform our energy audit and design work by providing a deeper understanding of technical issues from a variety of perspectives.


Our accessibility team collectively has over 70 years of experience providing accessibility compliance and consulting services.

The owner of this website has made a commitment to accessibility and inclusion, please report any problems that you encounter using the contact form on this website. This site uses the WP ADA Compliance Check plugin to enhance accessibility.