Green building certifications for corporate buildings: the history, what they mean and how to verify them

LEED assesses the building as a system, not as a sum of individual features. Energy, water, materials, indoor air quality, location and innovation are assessed together. Each criterion has a score, and the total determines the certification level.

For occupiers, the most direct impacts are the efficiency of the air-conditioning systems, the quality of filtered air, lower water consumption and, as a result, more efficient building service charges over the long term. A U.S. government (GSA) study of 22 federal buildings designed with sustainability criteria, most of them LEED certified or registered, measured energy consumption 25% below the national average, using data from 2008 and 2009.

The current version, LEED v5 from 2025, reorganized the criteria around decarbonization, quality of life and ecological conservation. For ESG reports with carbon reduction targets, LEED v5 gives that commitment criteria verifiable by external audit.

AQUA-HQE is the certification benchmark adapted to the Brazilian context. Developed in partnership with the French HQE standard and managed by the Vanzolini Foundation, it was calibrated to the tropical climate, the local construction supply chain and the performance standards of ABNT (the Brazilian Association of Technical Standards).

Unlike LEED, which scores by credits, AQUA assesses 14 categories at three levels: Good, Superior and Excellent, with minimum requirements in each. No category can be ignored, which tends to produce more balanced buildings than those that maximize points in a few areas.

For those occupying the building, AQUA is especially relevant for hygrothermal and acoustic comfort, criteria calibrated specifically for São Paulo's climate. The process requires monitoring during operation, which means the certification is granted not only for construction, but for the actual management of the building over time.

WELL is fundamentally different from all the other certifications on this page. It does not assess the building as a structure, it does not assess energy efficiency, it does not assess environmental impact. It assesses exclusively how the indoor environment affects the people who work there.

The result of seven years of research with doctors, scientists and industry professionals, WELL organizes its requirements, in the current version, into 10 concepts: air, water, nourishment, light, movement, thermal comfort, sound, materials, mind and community. Each is grounded in evidence on how the physical environment influences health, well-being and productivity.

The most immediate impact is measurable: air quality measured on site, lighting calibrated to the circadian rhythm, temperature controlled by zone and no toxic materials in finishes. For companies that use the quality of their environment as an argument to attract talent, WELL makes that argument verifiable and auditable.

BREEAM came first. Created in 1990, it preceded LEED by eight years and established the model all other systems followed: assessment categories, weighted scoring and certification levels. Today it is used in buildings in dozens of countries.

In Brazil, BREEAM is less frequent than LEED in the local corporate stock. But it is present in projects of multinationals headquartered in Europe, especially British, Nordic and German companies. For these companies, BREEAM is the familiar benchmark, and requiring only LEED would mean overlooking the standard their headquarters uses.

Technically, BREEAM assesses 10 categories with an emphasis on ecology and land use, which distinguishes it from LEED. Its certification levels (Pass, Good, Very Good, Excellent and Outstanding) serve the same purpose of ranking environmental performance in a verifiable way.

ISO 14001 is different from all the other certificates on this page: it does not certify the building. It certifies the environmental management system of the organization that operates the building.

A building with ISO 14001 has an owner or manager that has documented and implemented formal environmental management processes: waste monitoring, control of resource consumption, risk identification and continuous improvement. The certification is audited by third parties and renewed periodically.

For companies with mature ESG programs that include supplier assessment (Scope 3), the building manager's ISO 14001 ensures that the property's operating processes do not conflict with the company's own environmental policies.

In 2013, Arie Barendrecht realized that no existing system answered the most obvious question for any modern company: if the internet goes down, what happens? With the support of Mayor Bloomberg, he founded WiredScore in New York. Today the certification is used in buildings in several countries.

WiredScore assesses the building's digital infrastructure: the diversity of fiber providers, the redundancy and resilience of the connection, and readiness for new technologies. The result determines the certification level.

For operations that depend on data, WiredScore turns "the internet is good here" from a verbal claim into verifiable data. Uncertified buildings may have equivalent or inferior infrastructure. Without the certification, the answer depends on a technical assessment of the building itself.