Singapore has a population density of approximately 8,000 people per square kilometre — one of the highest in the world. Yet the island does not feel like a city under constant spatial pressure. The reason lies in a set of deliberate planning decisions made over decades, decisions about where to put open space, how to integrate it with housing and what types of public realm to prioritise at different scales.
The Void Deck: Small-Scale Public Space at the Base of Housing
Singapore's most distinctive contribution to the design of public space in high-density housing is the void deck — the open ground floor of an HDB block, left unenclosed and accessible to all residents. Introduced in the 1970s, the void deck was conceived as a space for incidental social interaction: residents passing through, children playing, elderly neighbours sitting out.
Over time, void decks have acquired additional functions. Many host miniature libraries, table tennis tables, community gardens and multi-purpose halls rented out for weddings, funerals and celebrations. The void deck is arguably the most democratic public space in Singapore — no admission, no fee, no programme, available to whoever passes through.
This design decision — to sacrifice lettable floor area at the base of every block — reflects a planning philosophy that public space is not a luxury to be added after development but a structural component of housing itself.
Supertree Grove, Gardens by the Bay · Photo: Allie Caulfield / CC BY 2.0
Town Squares and Precinct-Level Planning
HDB towns are planned around a hierarchy of commercial and public nodes. At the top of the hierarchy is the town centre — typically anchored by a major bus interchange, a shopping mall and a hawker centre. Below it are neighbourhood centres serving roughly 20,000 to 30,000 residents, and below those are precinct pavilions and void deck gathering spaces serving individual blocks.
The spaces in between — the areas in front of shops, around the bus stop, beside the market — are not incidental. URA and HDB coordinate on setback requirements and pavement widths to ensure that these in-between spaces remain usable rather than residual. The five-foot ways (covered pedestrian walkways mandated on the ground floor of shophouse buildings) are a heritage example of the same principle.
The Marina Bay Waterfront
Marina Bay represents the most ambitious attempt to create a signature public realm in Singapore. The land reclamation that created Marina Bay was completed in stages between the 1970s and early 2000s. The public waterfront promenade — running from Esplanade to Marina Barrage and back around the bay — was designed as a continuous pedestrian circuit accessible from multiple entry points.
The design of the promenade negotiates a tension common to contemporary waterfront development globally: how to make space feel public when it is surrounded by expensive commercial developments. In Marina Bay, this is achieved through a combination of ground-floor retail requirements, wide pavement setbacks, public art installations and events programming managed by the Singapore Tourism Board. The result is a space that accommodates both the tourist economy and the everyday walker.
Regional Parks and the Distribution of Green Space
NParks' park planning operates at a regional scale. Singapore has five major regional parks — East Coast Park, West Coast Park, Bishan-Ang Mo Kio Park, Punggol Waterway Park and Jurong Lake Gardens — each serving a large catchment area and typically located near major water features (coast, reservoir or canal). These parks are large enough to accommodate diverse uses simultaneously: cycling, barbecues, water sports, dog exercise areas and quiet woodland walks.
The challenge is distribution. East Coast Park is one of the most heavily used leisure destinations in Singapore precisely because it fills a gap: large-scale coastal open space is rare, and the park serves residents from Tampines to Kallang who have no other accessible equivalent. The 2030 Green Plan's commitment to ensure every resident is within a 10-minute walk of a park is partly a response to the uneven spatial distribution of parks across the island's districts.
Density Without Overcrowding
Singapore's experience suggests that high density and adequate public space are not inherently incompatible. The key variables are: where public space is located relative to where people live; whether it is genuinely accessible without a car journey; and whether it is maintained to a standard that makes it attractive to use. On all three counts, Singapore's track record is better than most cities of comparable density — partly because HDB estate design has always treated public space as a planning input, not an afterthought.
For the planning framework that allocates land for parks and open space, see the archive's piece on Singapore's URA Master Plan. For the greenery integration approach that complements public space provision, see From Garden City to City in a Garden.