When monsoon rain reaches a crowded neighbourhood, the meaning of a decent home becomes immediate: a dry floor, working drains and a safe route to school. Across Southeast Asia, housing security increasingly depends on whether communities can withstand environmental pressures while remaining affordable.
World Habitat Day, observed this year on October 5, carries the theme “Adequate Housing for All”. It puts a practical question before the region’s growing cities: who can afford to live safely within them?
Making Existing Homes Better
The housing challenge extends beyond building more units. UN-Habitat estimates that 2.8 billion people worldwide experience some form of housing inadequacy, including around 1.1 billion living in slums and informal settlements. These are global figures, but Southeast Asia offers clear examples of the work needed.
The World Bank’s June 2025 Indonesia Economic Prospects report estimated that 26.9 million Indonesian households needed better housing, compared with 5.4 million needing new housing. The distinction is crucial: improving sanitation, drinking water, construction quality and overcrowded living conditions deserves attention alongside new developments.
For a family in an established kampung, upgrading a home can preserve access to customers, schools and relatives. A cheaper house far from employment may bring higher transport costs and disrupt the relationships that help households manage everyday difficulties. Housing policy therefore needs to consider the whole neighbourhood, including livelihoods.
Giving Communities a Leading Role
Thailand’s Baan Mankong programme offers a longstanding model of residents shaping their housing future. Through the Community Organizations Development Institute, or CODI, communities organise cooperatives, negotiate land arrangements and access subsidies and affordable loans to build or improve homes.
“This way community members can be responsible for their own development,” CODI international relations officer Angkhana Trantarathong told the Thomson Reuters Foundation in 2021.
The same report described nearly 300 families in Bangkok’s Leab Klong Song Samakkhee community moving approximately three kilometres to safer housing after devastating floods. It also acknowledged that some households could not afford the programme, underscoring the need for additional support for the poorest residents.
The lesson is participation backed by resources. Consultation becomes meaningful when residents can influence location, design, repayment terms and the protection of their community networks.
Designing Neighbourhoods for Rain and Heat
Bangkok’s Chulalongkorn University Centenary Park demonstrates how public space can help manage heavy rainfall. According to its designer, LANDPROCESS, the park can hold up to one million gallons of water, helping ease pressure when drainage systems are overwhelmed. Such infrastructure complements wider flood management; one park cannot protect an entire city.
Singapore’s Tengah development approaches neighbourhood design through connected greenery and everyday accessibility. Its 1.3-kilometre Plantation Farmway links housing with community facilities, while the planned town centre places roads underground to create a pedestrianised surface. These features illustrate how housing, mobility and public space can be planned together.
For other Southeast Asian cities, the useful principle is adapting design to local conditions and budgets. Shaded walking routes, dependable drainage and accessible services deserve a place in ordinary neighbourhoods, including those with modest incomes.
Investing in Local Ideas
Young people are already developing practical responses. At the 2025 Habitat Youth Assembly in Cebu, Habitat for Humanity awarded ten Asia-Pacific projects US$4,000 each. Winners included initiatives from the Philippines, Vietnam and Cambodia.
“These proposals offer culturally relevant housing solutions tailored to the unique needs of each community,” said Liz Satow, Habitat for Humanity’s Asia-Pacific vice-president. The grants supported experimentation and mentorship; their announcement was a starting point rather than proof of completed housing improvements.
World Habitat Day’s promise will be tested where people live: in repaired homes, affordable neighbourhoods and streets that remain usable after rain. Southeast Asia’s urban future needs sustained investment that allows residents to stay safe, connected and involved in shaping their communities.
