The ROI of Healthy Buildings for Businesses
Why investing in human-centred workplaces outperforms almost every other capital decision
Over the past decade, healthy buildings have moved from the margins of sustainability discourse to the centre of company strategy. Organisation leaders, investors, asset managers and building occupiers increasingly recognise that the physical workplace is not a neutral container of activity but a determinant of human performance and financial outcomes. In knowledge-based economies, where salaries account for 80-90% of operating costs, even marginal gains in productivity, staff retention and engagement can greatly affect profitability.
The International WELL Building Institute (IWBI) have synthesised dozens of peer-reviewed and industry studies in “Investing in Health Pays Back” (1). The report concludes that healthy buildings are associated with improvements in productivity, reduced absenteeism, enhanced employee engagement and measurable asset value uplift.
This aligns with the central thesis of Joseph G. Allen and John D. Macomber in “Healthy Buildings: How Indoor Spaces Drive Performance and Productivity” (Harvard University Press) (2), who argue that healthy buildings represent “one of the greatest health and business opportunities ever”.
The question is no longer whether healthy buildings matter for business profitability. The question is how to quantify their return on investment (ROI) and how exactly should businesses leverage health-promoting buildings as ‘human capital infrastructure’.
The Economic Logic: The 3–30–300 Rule
A useful starting point is the 3–30–300 rule, referenced by Allen & Macomber (2). It illustrates that:
For every £3 a business spends on energy
Approx. £30 is spent on rent, and
Approx. £300 is spent on staff costs
When staff costs are 10 times rent and 100 times energy, the economic logic becomes clear. Optimising for energy-efficiency alone, while important for sustainability, delivers only a modest financial impact relative to optimising for human performance.
According to Allen & Macomber (2), human resource costs (salaries, etc.) typically represent up to 90% of business operating costs. Therefore even a modest 1% improvement in productivity could outweigh a 10% reduction in energy expenditure.
Productivity Gains: The Largest Financial Lever
Cognitive Performance and Indoor Environmental Quality
The relationship between indoor environmental quality (IEQ) and cognitive performance is supported by scientific evidence.
The IWBI have collated research (1) that was able to demonstrate a 61—101% improvement in cognitive function associated with improved indoor environmental quality, referencing research published in Environmental Health Perspectives (journal) (17).
Also, a research paper titled: Productivity is affected by the air quality in offices (‘Proceedings of Healthy Buildings’ journal) (3) found measurable productivity gains with improved indoor air quality (IAQ).
Higher fresh air ventilation rates have been linked with fewer ‘sick building syndrome’ symptoms, lower disease transmission and fewer missed workdays (2). More recent double-blind studies show direct improvements in ‘knowledge worker’ decision-making as a result of enhanced ventilation.
These are not abstract gains. For companies whose core output is thinking, designing, analysing and strategising, cognitive clarity equals revenue.
Financial Modelling Example
Allen & Macomber (2) provide a pro forma financial model for a 40-person company with an average salary of $75,000. Their calculation is based on the following assumptions:
2% productivity boost from healthy building interventions (a conservative figure)
1% health-related payroll cost reduction
10% rent increase as a result of an improved building (cost increase)
In this theoretical example, they found out that the business’ net income would increase by 7.1%. They also note that higher productivity increases are possible, e.g. 1-10% has been reported by different studies from improved ventilation alone.
This demonstrates a critical insight. Even when rent rises due to healthier premises, the performance gains can more than compensate.
Reduced Absenteeism and Presenteeism
Absenteeism
Poor indoor conditions are directly linked to lost working days.
Paul Roelofsen, in “The Design of Workplace as a Strategy for Productivity Enhancement” (4), found that Dutch workers lost an average of 2.5 days per year due to unsatisfactory indoor environmental conditions, representing 25% of total absenteeism.
Reducing indoor pollutants, improving ventilation, optimising thermal comfort and improving access to daylight, views and high-quality lighting can directly reduce illness-related absences.
Presenteeism
Presenteeism, where employees are physically present but cognitively impaired due to discomfort, poor sleep, stress or low motivation, often exceeds absenteeism in cost.
The World Health Organization estimates (5) that depression and anxiety cost the global economy $1 trillion per year in lost productivity.
Healthy building strategies targeting, for example:
Daylight and circadian lighting
Acoustic comfort
Thermal comfort
Air quality
Biophilia
… directly influence stress physiology and sleep quality. These interventions can greatly improve performance and general wellbeing while reducing burnout-related productivity loss.
Burnout alone has been estimated (6) to cost U.S. employers thousands of dollars per employee annually.
Talent Attraction, Retention and Employer Brand
In competitive labour markets, workplace quality influences talent decisions.
According to the International WELL Building Institute’s “2023 State of Workforce Well-Being Poll” (7), 92% of employees agree that a company committed to employee health and wellbeing stands out from the crowd.
Retention benefits are often under-modelled in ROI calculations. Replacing a skilled employee can cost 50-200% of their annual salary when recruitment, training and productivity loss are included (as reported, for example, by SHRM) (8). (According to the Harvard Business Review, it typically takes eight months for a newly hired employee to reach full productivity).
Healthy workplaces signal:
Organisational care
Long-term thinking
ESG alignment
Human-centred leadership
The World Green Building Council (WGBC) report “Health, Wellbeing & Productivity in Offices” (10) highlights that understanding how buildings impact people may be one of the most important business decisions organisations can make (p. 14).
Employer brand is increasingly tied to physical environment.
Rental Premiums and Asset Value Uplift
Healthy buildings increase asset value because they improve both the income side and the risk profile of a property. In an era shaped by ESG reporting, post-pandemic health awareness and competition for talent, buildings that demonstrably support wellbeing are perceived as lower-risk, future-proofed assets with stronger tenant retention and brand value.
Rent Premiums
Sadikin, Turan and Chegut, in their paper: ‘The Financial Impact of Healthy Buildings: Rental Prices and Market Dynamics in Commercial Office’ (MIT Center for Real Estate Research Paper No. 21/04) (11), analysed ten U.S. cities and found rent premiums of 4.4—7.7% for certified healthy buildings compared to non-certified buildings.
Asset Valuation
Lützkendorf and Lorenz (2011), in “Capturing sustainability-related information for property valuation” (12), demonstrate how sustainability-related data can influence property valuation.
Worldwide, certified green and healthy buildings can achieve asset values of 0—30% above standard, depending on location and the type of certification.
Healthy building sale price premiums are not simply about branding. They can reflect, depending on the building:
Lower operational risk
Reduced regulatory exposure
Improved tenant demand and retention
Lower vacancy risk
Higher rental income
Perceived future-proofing against climate regulation
Stronger ESG alignment for institutional capital
Research on exact sale premiums on healthy buildings is still limited but the (U.S.) ‘National Association of Realtors’ “Wellness Trend Driving Real Estate Price Premiums“ article (13) states:
“Homes and communities designed around wellness are reporting resale values 10%–25% higher, and commercial properties are achieving rental premiums of 4.5% to 7.5% more per square foot, according to the Global Wellness Institute.”
Operational Efficiency and High-Performance Buildings
The features required for 1) healthy and 2) environmentally sustainable, high-performance buildings frequently overlap. The Stok report “The Financial Case for High Performance Buildings: Quantifying the Bottom Line of Improved Productivity, Retention, and Wellness” states:
“The business case for High-Performance Buildings (HPBs) traditionally cites energy savings and increased asset value as the most appealing incentives. But another – and arguably greater – form of enhanced value creation that comes through HPBs is rarely discussed: HPBs benefit the people who occupy them, which in turn produces significant positive impacts on a company’s bottom line.“
The Stok report calculates that — for a hypothetical company — businesses can gain a $3,395 per employee or $18.56 per square foot increase in annual profit, by designing the building ‘for the occupant’.
While there is much overlap between green and healthy building approaches, as cautioned by the World Green Building Council (10), it would simplistic to assume that a low-carbon building would automatically equal a healthy building. There are many combined ‘wins’, but also some tensions, for example: 1) over-sealed buildings can trap pollutants without adequate ventilation and 2) some low-energy, low-maintenance buildings can rely on materials that off-gas air pollutants.
Generally, the twin goals for a high-performance building — the ability to enhance health and the ability to be environmentally sustainable — are a natural and easy combination with many shared strategies and design solutions.
Reduced Healthcare and Societal Costs
Healthy buildings deliver benefits for the wider community, stakeholders and the public also. According to the Velux and BPIE “Healthy Buildings Barometer (2024)” report (p. 10) (15):
Implementing well-designed energy-efficiency measures in all EU hospitals could save more than €45 billion annually, which equates to around 10% of total annual EU healthcare costs.
Renovating all inefficient housing stock in the EU could recover costs within two years, generating approximately €194 billion in equivalent societal savings, such as:
Fewer sick days
Reduced hospital visits
Lower healthcare expenditure
Poor indoor environments have consistently been linked with an increase in respiratory and cardiovascular risk, particularly in damp or polluted buildings. While this article focuses on business ROI, the macroeconomic savings strengthen the investment case.
From a systems perspective, healthier employees reduce public health burden, insurance costs and long-term disability; while promoting community cohesion, resilience in the face of climate change and a healthier planet.
Measurement: Turning Health into Data
The business case strengthens when health outcomes are measurable.
The World Green Building Council’s (WGBC) report “Health, Wellbeing & Productivity in Offices“ (10) proposes an integrated framework combining:
Financial metrics (business financial performance)
Perceptual metrics, such as occupant surveys (‘worker perceptions’)
Physical metrics, such as temperature, CO2 and pollutant levels (building performance, quantified ‘environment’)
By combining financial, human and building metrics — both performance and health/wellbeing metrics — a business can start to see itself more as a ‘system’ within other systems. Healthy buildings become data-driven assets with integrated feedback loops. Eventually the business can learn to function as a self-correcting and self-optimising system, which exists in a harmonious relationship with people, the planet and the economy.
Risk Mitigation and Resilience
The COVID-19 pandemic exposed the financial fragility of poorly ventilated buildings. Enhanced ventilation and filtration reduce airborne disease transmission risk, as discussed in the Harvard “Healthy Buildings: How Indoor Spaces Drive Performance and Productivity” book (2).
Healthy buildings can also help mitigate the following risks, among other things:
Legal risk related to unsafe environments
Reputational damage risk
Workforce disruption risk
Risk of building damage from severe weather events
Investors are increasingly integrating health considerations into capital allocation decisions. The report “A New Investor Consensus: The Rising Demand for Healthy Buildings” (16) by the ‘UN Environment Programme’ (UNEP) indicates growing investor appetite for health-promoting assets.
Healthy buildings, when correctly designed, reduce operational risk.
ESG, Sustainability and the Future of Capital
Health, wellbeing and productivity may become synonymous with sustainability.
The WGBC report “Health, Wellbeing & Productivity in Offices“ (10) questions whether we will see the rise of a Chief Wellbeing Officer, integrating facilities management (FM), HR and finance.
Healthy buildings align with:
Social sustainability
Environmental, Social and Governance (ESG) standards
Corporate governance
Long-term risk management
The IWBI report “Investing in Health Pays Back” (1) highlights that integrating health into corporate strategy can potentially unlock tangible financial benefits, as well as align with sustainable finance principles.
As regulatory frameworks evolve, social sustainability metrics may become as material as carbon and energy-efficiency requirements.
CONCLUSION
Healthy buildings and the ‘people-based business’ approach represent a profound shift in how we define value. They move the conversation from cost control to optimising environments for human wellbeing. When we recognise that buildings shape our stress levels, ability to collaborate, cognitive performance, immune resilience, creativity, emotions and decision-making quality, we begin to understand that architecture is not aesthetic backdrop. It is biological infrastructure.
Businesses that invest in healthy buildings are not indulging in luxury. They are investing in the ‘operating system’ of their organisation: their people. In a century defined by knowledge work, climate change and mental health challenges, the workplaces we design today will either deplete or elevate human potential. The evidence increasingly suggests that elevating people is one of the most financially intelligent decisions a business can make.