Biourbanism Case Study: Sydney Mega Park - Biourbanism.
A megapark for a megacity: Sydney Basin

Biourbanism Case Study: Sydney Mega Park

November 21, 2022

By Adrian McGregor

In 2021, McGregor Coxall unveiled a plan to create the world’s biggest urban park inside the Sydney Basin.

By 2070, Greater Sydney will be home to ten million people – a megacity by definition. It is anticipated almost half of this population will reside west of Parramatta in areas yet to be urbanised.

The proposal creates a new 1000-kilometre ring of open space that unites the disparately managed parks and waterways of the Sydney Basin into a world-class urban park governed by a city-wide parks agency.

Surpassing the 200,000-hectare Chugach State Park in Anchorage, Alaska, it would be the world’s largest urban park with an estimated 1.5 million-plus hectares of green space. The plan upscales the NSW Government’s ‘city in a park’ concept, comprising a circular network of public open spaces from Gosford to Wollongong, and Bondi to the Blue Mountains. The park will be the lungs of the city – limiting urban sprawl, reducing urban heat, soaking up carbon and conserving ecological assets for future generations.

The concept integrates the management of over 50 existing, separately managed parks in the Sydney basin (including 34 national parks) by the NSW Government into a single coordinating entity, ensuring the highest level of protection for public lands and the environment in the future.

Sydney has always had a close relationship with its landscape. For millennia, First Nations peoples have lived in the Sydney Basin, sustainably managing and farming the landscape and waterways on a vast scale. Today, reconnecting with our unique landscape has never been more important. With the climate emergency on our doorstep, the need for respectful, intelligent, large-scale, integrated planning of the city and its environment is crucial for building resilience to rising temperatures.

Urban plans for Sydney Basin and adjoining parklands aren’t new. The most significant was the Cumberland Plan adopted in 1951, an unrealised strategy that proposed a green belt around the city to contain its two million sprawling residents at the time. The proposal includes a concept for a new parks agency to coordinate and manage more than 6000 hectares of parklands that receive over 40 million visits yearly, combined. The Greater Sydney Parklands agency is a positive first step in realising such a comprehensive city-wide parks vision that supports the current population. This agency could be further expanded to become Sydney Parks, a sister to Sydney Water.

As the failure of the Cumberland Plan demonstrated, a park plan without commitment to a funded agency that drives delivery is no plan at all. Since 1958, Melbourne has had both a parks and a water charge – so the funding model already exists in Australia.

Healthy parks and waterways go hand in hand and Sydney’s primary catchments of Parramatta, Georges and Hawkesbury-Nepean will be the foundation of Sydney’s resilience – fostering biodiverse aquatic life in water that is clean enough to swim in. Picture a Sydney whose beaches, coastal and urban, are an equitable source of recreation city-wide.

Australia is one of 141 countries that pledged at COP26 to halt and reverse forest loss and land degradation by 2030, and to absorb carbon from combustion of coal, oil and gas. A Mega Park can position NSW as a pioneer in delivering that promise, leveraging a unique opportunity to create unified parklands that serve Sydney’s diverse communities.

The pandemic has demonstrated that local and regional parks are crucial infrastructure in maintaining the mental and physical wellbeing of citizens. The proposed Greater Sydney Parklands is a positive first step in managing a significant part of our public open space, but the real challenge is  to expand our parkland vision to the mega scale.

A megapark for a megacity: Sydney Basin

Sydney is projected to become a megacity by 2070. To support its ongoing liveability, McGregor Coxall has proposed that a new Mega Park be created. The proposal creates a new 1000-kilometre ring of open space that unites the disparately managed parks and waterways of the Sydney Basin into a world-class urban park.