Study reveals economic and health benefits of denser suburbs

Study reveals economic and health benefits of denser suburbs

Denser and more walkable suburban developments keep chronic diseases at bay and deliver lifetime economic and health gains of $4,500 for every resident, new research shows.

The paper published by RMIT urban researchers in the International Journal of Behavioural Nutrition and Physical Activity shows there is economic and health benefit to designing new suburbs with health objectives in mind.

The researchers looked at two case studies in different areas of western Melbourne: Altona North, an industrial development site with existing amenities such as transport and shops, and Truganina, a lower density growth area on the urban fringe.

Authors Dr Lucy Gunn and Dr Belen Zapata-Diomedi from the RMIT Centre for Urban Research compared the built environments, and the health and economic benefits that come from living in each suburb.

Their study found that shifting residents to Altona North would result in an average gain of an additional month of living with full health – without chronic diseases associated with physical inactivity such as Type 2 diabetes, heart disease and colon cancer.

The health uplift of living in a denser suburb represents an economic benefit of $4,500 per person over their lifetime, or $94 million for a population of 21,000 people housed in Altona North.   

Render of the Altona North precinct. Image by Tract Consultants.Render of the Altona North precinct. Image by Tract Consultants.

Gunn said the research shows there is great potential for brownfield developments that make use of existing surrounding infrastructure provided they are designed well.

“If you build a healthier environment there is an economic value that comes back to society,” Gunn said.

“We generally already know this, but this new study details this benefit in health and economic terms.

“With Melbourne’s booming population and the State Government announcing 50,000 housing lots for 12 new suburbs on the city’s fringe, our study offers support and evidence for rethinking urban design.

“Clearly there are benefits to more walkable residential developments that are not being accounted for by authorities in the decision-making process.

“Our research could be applied to major infrastructure projects where the economic and health benefits could sway design decisions and the allocation of funding.”

The researchers set out to compare two different sites where suburban development could occur to accommodate population growth in Melbourne.

Altona North was selected as it is an upcoming brownfield development site with medium to high density, and Truganina was chosen for comparison.

While both have similar populations, Truganina has a vastly different built environment structure lacking amenities such as a variety of public transport options, shops and services – whereas the Altona North site has a more established surrounding environment. 

Maps of brownfield Altona North and green-field area of Truganina showing their urban structure, access to destinations, public open space and bus lines.Maps of brownfield Altona North and green-field area of Truganina showing their urban structure, access to destinations, public open space and bus lines.
20 February 2019

Share

The study found well-located higher density developments in established areas with existing amenities were likely to produce health outcomes and economic benefits compared to housing the same people in low density developments on the urban fringe.

There is a cost to society for not having infrastructure that supports a healthy, active population and this isn’t recognised in current planning decisions for major infrastructure projects, which typically ignore the role of health, says co-author Dr Zapata-Diomedi.

“Chronic diseases linked with physical inactivity are a huge cost to individuals and our health system,” she said.

“To assess the health of the 21,000 people across their lifetime, we used health adjusted life years, which is a measure of health that combines the mortality, morbidity and quality of life typically used in studies such as this.  

“We estimated a gain of 1,600 health adjusted life years using our modelling for the Altona North residents in comparison to them living in Truganina.

“Hypothetically, if you could change the design of Melbourne in its entirety, these health gains would be considerable.

“Investing in infrastructure that supports health makes sense – socially and economically.” 

 

Be part of the conversation about Melbourne's future as our population heads towards 8 million. Join local and international leaders from industry, research and innovation, 18-20 February at RMIT. Find out more at Engaging for Impact 2019

 

Story: Chanel Bearder

20 February 2019

Share

  • Society
  • Sustainability
  • Research
  • Urban Design
Engage

Related News

prs-sem1-wrapup-image2-1220x732ps.jpg

A semester of global research: showcasing HDR excellence across three continents

From Ho Chi Minh City to Barcelona to Melbourne, DSC’s HDR Symposia spent the first half of 2026 engaging with RMIT’s global community of Higher Degree by Research (HDR) candidates through formal PhD examinations, milestone reviews and work in progress presentations.

Overview of Paris from Pompidou Center with roof tops.

European cities short on shade as heat bites

New analysis of 5.5 million buildings shows 84% fall short of tree canopy levels required for meaningful cooling.

wsbe-26-wrap-thumbnail-1220x732px (1).jpg

RMIT advances sustainable housing leadership at WSBE26

RMIT University was honoured to recently host the World Sustainable Built Environment Conference 2026 (WSBE26) in Melbourne, one of the longest‑running global scientific and technical conference series dedicated to sustainability in the built environment.

Study lead author and RMIT PhD candidate Kinjal Furia.

Ultrasound unlocks protein from cauliflower waste

An RMIT innovation uses ultrasound to extract leaf protein from discarded cauliflower leaves, identifying a potential new use for vegetable scraps.

Show more
aboriginal flag float-starttorres strait flag float-start

Acknowledgement of Country

RMIT University acknowledges the people of the Woi wurrung and Boon wurrung language groups of the eastern Kulin Nation on whose unceded lands we conduct the business of the University. RMIT University respectfully acknowledges their Ancestors and Elders, past and present. RMIT also acknowledges the Traditional Custodians and their Ancestors of the lands and waters across Australia where we conduct our business - Artwork 'Sentient' by Hollie Johnson, Gunaikurnai and Monero Ngarigo.

More information