The Indonesian government has launched an ambitious, multi-pronged initiative to revitalize coastal slums, integrating them into the nation’s broader sustainable development framework to combat both extreme poverty and the existential threat of rising sea levels. By shifting from simple relocation to in-situ infrastructure upgrades, the Ministry of Public Works and Housing aims to improve sanitation, water access, and disaster resilience for millions living in informal settlements. This policy, accelerated by the 2026 national urban renewal mandate, marks a departure from historical practices of forced displacement, focusing instead on upgrading existing, high-density coastal zones through engineering interventions and social equity programs.
From Displacement to In-Situ Resilience
For decades, the standard Indonesian response to overcrowded and unsanitary coastal slums—known locally as kampung—was the bulldozer. Authorities frequently viewed these settlements as blight, opting for total clearance. However, current data from the World Bank’s Indonesia Urban Flagship Report suggests that total clearance often triggers a “poverty trap,” where displaced residents lose access to their informal economic networks and proximity to urban job centers. The new government strategy prioritizes “upgrading in place,” which keeps communities intact while installing modern plumbing, elevated walkways, and flood-mitigation barriers.
This approach addresses a critical information gap: the sheer economic cost of permanent relocation versus the long-term sustainability of hardened infrastructure. By investing in resilient materials—such as permeable paving and reinforced embankments—the government intends to mitigate the impact of tidal flooding, which is currently a daily reality for thousands of families in cities like Jakarta, Semarang, and Medan.
“The challenge is not just the physical structure of the slum, but the integration of the informal economy into the formal city grid. If you move people to the periphery, you destroy the very livelihoods that allowed them to survive in the city to begin with,” says Dr. Arianto Patunru, a lead economist at the Australian National University’s Indonesia Project.
The Economic Calculus of Coastal Adaptation
The financial burden of this transition is substantial, requiring a fusion of state funding and private-sector partnerships. According to the Indonesian Ministry of National Development Planning (Bappenas), the cost of inaction—measured in lost productivity from illness, flood-related damage, and social instability—far outweighs the capital expenditure of infrastructure upgrades. The government is incentivizing private developers to include low-income housing units within new commercial projects, a mechanism known as “inclusive urban development.”
This initiative is part of a larger, global trend of “climate-proofing” vulnerable coastal cities. Indonesia’s strategy mirrors successful models implemented in Brazil and Vietnam, where community-led design has increased the longevity of infrastructure projects. By involving local residents in the planning phase, the government hopes to ensure that new water and waste systems are maintained by the community, rather than falling into disrepair due to lack of local ownership.
Navigating the Risk of Gentrification
While the goal is sustainability, the risk of “green gentrification” remains a significant hurdle. When informal areas are upgraded with better drainage, electricity, and access, property values often surge, potentially pricing out the very residents the upgrades were intended to support. This creates a paradox: the more successful the infrastructure project, the more likely the current occupants are to be displaced by market forces.
To prevent this, the Indonesian government has introduced land tenure regularization programs. By providing legal documentation to residents in these upgraded zones, the state creates a barrier against predatory land acquisition. However, critics argue that the pace of implementation is slow. According to the Asian Development Bank, while policy frameworks are robust, the bottleneck often lies in the bureaucratic coordination between municipal governments and the central state authority.
“Infrastructure is only as sustainable as the legal protections surrounding the land. Without secure tenure, upgrades are merely a gift to future landlords rather than a solution for current dwellers,” notes Dr. Sarah Knuth, an expert in urban environmental policy at Durham University.
The Path Toward Long-Term Urban Stability
The success of Indonesia’s coastal slum upgrade program will ultimately be measured by its ability to maintain density while increasing safety. The current phase involves pilot projects in North Jakarta, where the installation of new sea walls and water-treatment facilities is already showing a reduction in water-borne diseases. The government aims to scale these pilots to cover 500 hectares of high-risk coastal land by the end of 2028.
For residents, the change is immediate. Access to clean water and reliable electricity is no longer a luxury but a design requirement. As global sea levels continue to rise, the resilience of these coastal communities will serve as a bellwether for the rest of Southeast Asia. The transition from reactive disaster management to proactive urban planning is a difficult, costly, and politically sensitive evolution, but for Indonesia, it appears to be the only viable route to maintaining the economic vitality of its coastal hubs.
How do you think a city can best balance the need for modern, climate-resilient infrastructure with the protection of long-standing, informal community networks? Let us know your thoughts on the future of urban development in the comments below.
