Gulguer National Park's creation is part of the wider Cumberland Plain Conservation Plan (CPCP), which aims to "improve ecological resilience and protect biodiversity in Western Sydney by 2056." The plan aims to offset the impact of urban development, with about 73,000 new homes earmarked for Western Sydney over the next three decades.

NSW Environment Minister Penny Sharpe said Gulguer National Park, which would include new campgrounds, walking and cycling tracks, would provide much-needed green space for the region.

Hiking and mountain biking trails are expected to weave throughout the eucalyptus trees, creeks, and gum tree forests. While only some trails will be open initially, New South Wales National Parks and Wildlife Service plans on adding more down the line, along with lookouts, campsites, and picnic areas in the future.

Gulguer National Park takes its name from the Gundungurra word that describes the whirlpool action of the water that forms during high flows in the Nepean River. The national park will occupy the traditional land of the Indigenous Dharug, Dharawal, and Gundungurra peoples. Important Aboriginal cultural heritage will be protected and the land’s management as a national park will enable greater access to Country for Aboriginal people.

The park will also protect habitat for at least 28 threatened species, including Cumberland and Dural land snails, southern greater glider, powerful owl, giant burrowing frog and eastern coastal free-tailed bat. It also features areas of critically endangered Shale Sandstone Transition Forest and Sydney Turpentine–lronbark Forest ecological communities.

"Making it a national park means that it has one of the highest levels of protection," Ms Sharpe said. "It means that it's here for us to look after for many many decades to come and it means that it restricts what can happen on here."

Public access to the new park is currently only available via Bents Basin State Conservation Area. Opportunities for visitors to access the park will increase over time, with the expansion of the park and creation of infrastructure to support appropriate public use.

The new park is set to open in the next six months.