The Long Island project is primarily a coastal protection measure. The low-lying East Coast Park area is largely lower than 5 metres above mean sea level — the extent of projected sea-level rise in Singapore by the end of this century if higher global mean sea levels coincide with extreme high tides and storm surges. URA noted that some seafront areas, such as East Coast Park, have experienced coastal flooding in recent years due to seasonal high tides.

These events in January 2024 and January 2026, against the backdrop of rising sea levels and more intense rainfall, underscore the need to begin coastal protection works progressively. URA said in a statement that Long Island is a critical coastal protection measure, and the preparatory works are important to ensure the timely completion of the reclamation off East Coast Park.

The concept for Long Island was first revealed in Singapore’s Concept Plan 1991. At the 2019 National Rally, then Prime Minister Lee Hsien Loong said reclamation was being studied as a means to defend East Coast Park against rising seas, while creating space for a freshwater reservoir. Waterfront homes are expected to be built on the reclaimed land, along with amenities and industrial facilities.

The preparatory works will involve mapping the seafloor and water depth, as well as carrying out an environmental impact assessment. This could take several months to about a year, depending on the complexity and scope. These works are expected to occur in localised areas, so they could cause temporary and localised disruptions to recreational activities.

URA has been clear that the preparatory works will not lock in the plans for Long Island and will not involve actual reclamation works. The plans and design for the project will be finalised only after the full findings of technical studies, mitigation measures, and feedback from further public engagements have been taken on board.

URA also noted that there were suggestions to incorporate nature-based solutions, such as creating conditions for marine life and intertidal habitats to thrive, as well as to implement the works in phases to mitigate the impact on affected stakeholders as much as possible. Acknowledging that East Coast Park is an important recreational space with shared social memories, URA said it will plan for Long Island and the new reservoir to facilitate future recreational activities.

While Long Island will take several decades to plan, design, and build, the project signals a long-term commitment to developing Singapore’s eastern coastline. The creation of 800 hectares of new land — with new waterfront homes, a reservoir, and 20km of parks — could reshape the property landscape in the East Coast and Marine Parade districts.

Since November 2023, URA and other agencies have engaged more than 14,000 people on their aspirations and ideas for Long Island. The agency said there was consensus on the critical need to protect the low-lying East Coast from rising sea levels, and recognition that the reclamation project is an optimal solution that brings national benefits.

For current property owners in the East Coast precinct, the Long Island project could enhance the long-term appeal of the area. For buyers looking at East Coast properties, it is worth keeping an eye on how this landmark project develops over the coming years.