Healthy Buildings.Built on Science.

Now more than ever, the world is aware of how the indoor environment influences our health. Are your buildings ready for the new norm?

At 9 Foundations, we drive cutting-edge research into practice with customized healthy buildings solutions and support.

With our strategic advising, the people in your building will join the millions across the globe who work, live, and learn in spaces we’ve made healthier.

New York City’s largest all-electric tower with net-zero operational emissions will exceed the highest standards in sustainability

The Foster + Partners-designed building will offer 2.5 times more ground-level outdoor space, feature an expansive public plaza with street-level green spaces and use healthy building principles to set new standards for employee wellness and hospitality.

“Designed with a health-first mindset in all aspects, this project proves you can have both excellent indoor air quality for occupants, while also addressing sustainability goals that improve the health of the community by reducing impacts on the planet. This building sets new standards of excellence for healthy building in New York City and around the world.”

- Dr. Joseph Allen
Associate Professor and Director of the Healthy Buildings program at the Harvard T.H. Chan School of Public Health and CEO of 9 Foundations

9Foundations

The 9 Foundationsof a Healthy Building

The 9 Foundations of a Healthy Building were created by a multidisciplinary team of experts from the Healthy Buildings Program at the Harvard T.H. Chan School of Public Health. The 9 Foundations are the core elements of healthy indoor environments, distilled into clear and actionable guidance, and designed to bridge the gap between scientific research and you — the people who control, manage and occupy buildings.

Meet the Healthy Building Experts

The team at 9 Foundations consists of leading experts in the science of healthy buildings. Our pioneering approach brings together best practices across diverse domains – including public health, business strategy, risk assessment, and commercial real estate- to offer customized guidance for every client.

Dr. Joseph G. Allen Portrait

Joe Allen, DSc, MPH, CIH

CEO / Founder

Dr. Joe Allen is an associate professor at the Harvard T.H. Chan School of Public Health, director of Harvard’s Healthy Buildings Program, and the coauthor of Healthy Buildings: How Indoor Spaces Drive Performance and Productivity.

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Linnea Champ Portrait

Linnea Champ, MPH

Health Scientist

Linnea Champ is a Harvard-trained health scientist who conducts research and analysis on all aspects of healthy buildings.

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Dr. Emily Jones Portrait

Emily Jones, PhD

Senior Health Scientist

Dr. Emily Jones is a Harvard- and Princeton-trained scientist with expertise in the fields of environmental health and environmental engineering.

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Marissa Rainbolt Portrait

Marissa Rainbolt, MPH

Health Scientist

Marissa Rainbolt is a health scientist with experience in conducting public health research, implementing healthy building strategies, and leading EH&S public health and worker safety programs.

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Dr. James J. McDevitt Portrait

James McDevitt, PhD, CIH

Senior Health Scientist

Dr. James McDevitt has over 30 years of experience in the fields of environmental health and industrial hygiene, including with the U.S. Air Force and on faculty at Harvard, and serves as a diplomat of the American Board of Industrial Hygiene.

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Natalie Daranyi Portrait

Natalie Daranyi, MPH

Health Scientist

Natalie Daranyi is a Health Scientist for 9 Foundations, Inc. Natalie has professional experience in the public and private sector assessing regulatory compliance, conducting risk assessment, facilitating root cause analysis, and managing workplace safety programs.

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Katie Giasullo Portrait

Katie Giasullo, MBA

Director of Operations / Executive Assistant

Katie Giasullo is the Director of Operations and Executive Assistant to Joseph Allen. She has professional experience in administrative work over the past ten years, working with executives and teams to manage day to day business operations. Katie earned her MBA from Walden University. She received her Bachelor of Arts degree in Marketing from Siena College.

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Dr. Leslie Cadet Portrait

Leslie Cadet, MD, MPH

Medical Advisor

Dr. Leslie Cadet is a Harvard-trained, board-certified occupational and environmental medicine physician. Through a population health lens, she provides occupational and preventive medicine oversight to a wide array of industries.

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Maureen Ehrenberg Portrait

Maureen Ehrenberg, FRICS, CRE, LAI

Strategic Advisor

Maureen Ehrenberg is an internationally recognized expert, advisor, and board member on real estate business transformation, strategic redesign for the future of work, and facility management. She is CEO of Blue Skyre, Innovation in the Built Environment.

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Carl W. Howell, M.S. Portrait

Carl W. Howell, M.S.

Strategic Advisor

Carl W. Howell has over two decades of experience in the non-for-profit sector dedicating his career to mitigating the impacts of poverty and the disparities across social determinants of health. He is the Chief Program Officer (CPO) at Community Teamwork, Inc (CTI), one of the largest non-profits in New England and one of only two organizations in the state of Massachusetts that is a Community Action Agencies (CAP), a Regional Housing Agency, and a Community Development Corporation (CDC).

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Juliette Kayyem Portrait

Juliette Kayyem

Strategic Advisor

Juliette Kayyem is a Harvard Kennedy School Professor with over 20 years of experience managing complex policy initiatives and organizing major crisis responses, including as President Obama’s Assistant Secretary at the Department of Homeland Security, as the Massachusetts Homeland Security Advisor, and as a CNN national security analyst.

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Select Clients

The team at 9 Foundations has advised Fortune 500 companies, nonprofit organizations, and government agencies across major sectors of the economy. Our clients turn to us both for real-time guidance on building health crises and for custom, future-looking strategies for high-end projects and corporate offices. We've even advised on product research and development for new healthy building technologies that our clients are looking to bring to market.

Take a look — then see what we can do for you.

JP Morgan Chase logo
Salesforce logo
CBS logo
Carrier logo
Goldman Sachs logo
EY logo
Chanel logo
Broadway Across America logo
Armstrong logo
Beacon logo
AMC logo
Boston Properties logo
Brown University logo
Reckitt logo
Sun Valley logo
Manulife logo
Boston Symphony Orchestra logo
Mintz logo
Pfizer logo
BestBuy logo

Health Intelligent Buildings start with the right tools.

The 9F Healthy Buildings Suite brings you a full range of software and digital solutions, created to address all aspects of healthy buildings and rooted in cutting-edge science and research. Explore how 9F makes it simpler to achieve a Health Intelligent Building in any space, anywhere in the world.

In-field assessments of acquisitions to identify the presence or absence of key indicators

Expert feedback to optimize worker health and well-being in the building

Integrate proactive strategies that promote upstream preparedness for unforeseen public health crises

Science-based strategies for promoting health at the building level

Guidelines for new and existing buildings

Tools for owners, developers, investors, and tenants

Evaluate health performance holistically across the building portfolio

Track progress toward health optimization

Prioritize investments for high impact

Visualize results and extract actionable recommendations

Verify healthy building performance through real-time IAQ data collection

Track the "pulse" of the building

Merge smart and sustainable solutions

Incorporate employee feedback into the building user experience

Evaluate program success

Enhance workplace experience

Leverage data to gain valuable ESG metrics

Track health-relevant information

Support climate and equity goals

Quantify the health and climate co-benefits of green building investments

Expert Services


  • Climate Co-benefits
  • COVID-19 Response
  • Crisis Response
  • Environmental Health & Safety Consulting
  • ESG
  • Expert Legal Work
  • R&D Support
  • Real-time Air Quality Sensor
  • Return to Work
  • Sick Buildings
  • Technology Evaluations
Demo Dashboard

With the 9F Healthy Buildings Platform, data and reports about the health of your building are always at your fingertips. The platform brings our entire suite of tools together on an intuitive, web-based dashboard for easy access.

Our Science in the News