Ku-ring-gai, located in Sydney’s northern suburbs, is renowned for its unique and environmentally sensitive and significant landscape. Often described as the “lungs of Sydney,” this region is characterized by a rich blend of natural and cultural features that set it apart.

Its environment includes lush bushland, a substantial tree canopy, and critically endangered ecological communities, including the Blue Gum High Forest, Sydney Turpentine Ironbark Forest, and Duffys Forest.

Less than 1% of the Blue Gum High Forest remains globally, making its preservation a matter of international ecological importance.

The area is also home to diverse flora and fauna, significant Aboriginal heritage sites, and a distinctive urban forest that contributes to both biodiversity and the region’s aesthetic character. This green environment not only supports local wildlife but also plays a vital role in mitigating urban heat, improving air quality, and maintaining the ecological health of surrounding areas like Western Sydney, the Northern Beaches, and the Hawkesbury River.

The unique character of Ku-ring-gai is further defined by its heritage-listed properties, heritage conservation areas and garden suburbs, which have historically been shaped by a preference for low-density housing and detached homes surrounded by garden. Ku-ring-gai has the best collection of 20th Century domestic architecture in the nation.

For over 30 years Friends of Ku-ring-gai Environment (FOKE) have highlighted the need to preserve Ku-ring-gai’s local identity, character, amenity, heritage and environment. Ku-ring-gai is an integrated blend of both the natural environment and the built suburban form. The Ku-ring-gai Local Strategic Planning Statement and Urban Forest Strategy underscore the commitment to maintaining this balance, aiming to conserve the area’s visual and landscape character amid growth pressures.

However, overdevelopment poses a significant threat to this delicate ecosystem and community fabric.

Current NSW Government planning policies including the Transport Oriented Development (TOD) program mandates higher-density housing (6- to 7-storey apartment buildings within 400 meters of stations like Gordon, Killara, Lindfield, and Roseville). The TOD is seen as a direct challenge to Ku-ring-gai’s environmental and heritage values. Critics argue that such policies override local protections—like the Tree & Vegetation Development Control Plan and heritage conservation measures—will lead to several adverse impacts:

1. Loss of Tree Canopy and Biodiversity: The replacement of trees and gardens, with hard surfaces with concrete for apartment blocks and oversized home, reduces deep soil landscaping, essential for sustaining the urban forest and endangered ecological communities. This threatens the survival of native wildlife and pushes species toward extinction, undermining federal biodiversity commitments.
   
   
2. Cumulative Environmental Strain: Development proposals are often assessed in isolation, ignoring the cumulative impact of prior projects. Increased population density strains infrastructure—water, sewerage, and transport—while exacerbating runoff, congestion, and habitat loss. The lack of updated baseline studies on heritage, infrastructure, and traffic since 2002 complicates sustainable planning.
   
   
3. Heritage and Character Erosion: High-rise developments disrupt the low-rise, garden-suburb aesthetic, creating a “Swiss cheese effect” where modern towers overshadow heritage properties. This not only diminishes visual appeal but also devalues the cultural history tied to Ku-ring-gai’s evolution over 150 years.
   
   
4. Climate Resilience Risks: The push for density conflicts with Sydney’s 40% tree canopy target by 2036, reducing the area’s capacity to combat climate change effects like heatwaves and flooding. FOKE has persistently advocated for a planning system rooted in ecological sustainability, warning that current trends prioritize developer interests over long-term environmental health.
   
   

Community resistance, backed by Ku-ring-gai Council’s legal action against the TOD policy, reflects widespread concern. Residents fear property devaluation and the loss of their “green” environment to what they describe as “hyper-overdevelopment.” While the region has already approved 13,000 new dwellings since 2006 and faces a target of 10,660 more by 2036, FOKE has argued that existing zoning cannot accommodate this level of growth without sacrificing the area’s unique attributes. The tension lies in balancing housing needs with the preservation of an irreplaceable natural and cultural legacy—a challenge that remains unresolved.