WELL CERTIFICATION FOR OFFICE BUILDINGS

A Harvard study measured 101% higher cognitive performance in well-ventilated offices. WELL is how you prove yours is one of them

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What is happening with WELL certification in

offices

Return-to-office mandates forced thousands of companies to answer an uncomfortable question: why should an employee prefer the office over their kitchen table at home? The answer more and more companies are giving isn't corporate talk about 'culture' — it's physical evidence that the building protects and enhances performance. Harvard University's COGfx Study measured that workers in offices with better air quality and enhanced ventilation score up to 101% higher on cognitive function tests than those working in conventional offices, and that finding changed the corporate real estate conversation: it stopped being just about square footage and location, and started being about what the building does to the brain of the person working in it. At the same time, LEED and EDGE have already become an expected baseline in the Class A office segment — they certify the building, but say nothing about whether that building makes the people occupying it eight hours a day more productive, healthier, or happier. That's exactly the gap WELL certifies: it's the standard that completes the social 'S' of an ESG report that already has the environmental 'E' covered by LEED, and gives the HR director and Chief People Officer an argument backed by real performance evidence — not a marketing promise — to justify why it's worth coming into the office.

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The missing argument for the return to office: in the negotiation between employer and employee over in-person work, a WELL-certified building turns 'company policy' into 'a verifiably better space to think, breathe, and work' — an argument HR can make without it sounding imposed.
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Measurable improvement in cognitive performance: Harvard's COGfx Study links better air quality and ventilation to improvements of up to 101% in cognitive function tests, a finding innovation and corporate productivity teams already use to justify investment in the workplace.
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The social 'S' your ESG report still lacks: if your building already certified LEED or EDGE, you have the environmental 'E' covered. WELL is the verifiable evidence of the social pillar that auditors, investors, and ESG rating agencies increasingly demand and that no environmental certificate can offer on its own.
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Talent retention with direct impact on replacement cost: in sectors where replacing a senior specialist costs several months' salary in recruiting, onboarding, and the learning curve, a building people associate with better wellbeing is a retention lever with measurable financial impact, not just another amenity.

What are the steps to get certified?

Work experience diagnosis: we assess the building from the perspective of the person occupying it eight hours a day — air quality, natural light, acoustics, ergonomics, and thermal comfort — against WELL v2's ten concepts, prioritizing Air, Light, Mind, and Movement, the ones with the greatest weight on cognitive performance and retention.

Registration and target level definition: we register the project with IWBI and select Bronze, Silver, Gold, or Platinum based on budget and the positioning the company seeks in the competition for talent.

On-site performance verification: unlike LEED, WELL requires an accredited performance testing agent to carry out physical air and water quality tests directly in the building — the evidence that sets WELL apart from any wellness promise in a corporate brochure.

GBCI certification and internal and external communication: once the seal is obtained, we prepare materials HR can use in return-to-office negotiations and corporate communications can use in the ESG report and employer branding.

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Costs and timelines?

IWBI calculates its registration and certification fees by built-area range, with a component LEED doesn't have: on-site performance verification, which includes physical air and water quality tests carried out by an accredited agent directly in the building. This makes WELL's total budget higher than LEED's for comparable square footage, though office buildings that already hold LEED or EDGE start with an advantage since much of the mechanical systems documentation is reusable. The full process takes 12 to 18 months from registration, and unlike LEED, certification isn't permanent: it requires recertification every three years, which forces performance to be sustained over time rather than achieved once for the opening-day photo.

Read more about WELL certification

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Does WELL actually improve productivity, or is it a marketing strategy?

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The evidence goes beyond marketing. Harvard University's peer-reviewed COGfx Study measured improvements of up to 101% in cognitive function tests in offices with better air quality and ventilation. WELL translates that scientific evidence into verifiable building requirements backed by physical testing, not unsupported claims.

My building already has LEED. Why do I also need WELL?

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LEED certifies the building's environmental performance: energy, water, materials. WELL certifies its impact on the health and performance of the people who occupy it. They're complementary standards, not competitors, and share enough mechanical systems and air quality documentation that certifying both costs less than certifying each separately from scratch.

How do you justify WELL's cost to the company's finance leadership?

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The strongest financial argument isn't the cost of certification itself, but the cost of not certifying: the absenteeism, talent turnover, and lost productivity tied to a poor work environment are already on the company's income statement — they're just not labeled as such. WELL turns those hidden costs into a problem with a measurable solution, giving HR and corporate real estate a verifiable credential to justify the investment to finance leadership.

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