Community campaigner Michael Andjelkovic said the proposed 1000-space multi-storey car park at Edmondson Park train station is a "step in the right direction."
Holsworthy MP Melanie Gibbons said work on the first multi-storey car park at the south of the station is planned to start around mid-2020 and is still expected to be completed by mid-2021.
The community are invited to have their say on the early concept design for the car park which is the first step to delivering up to 2000 additional parking spaces for the growing community who had previously been forced into parking on footpaths due to the lack of parking.
"It is planned that the new facility will provide lift access, CCTV and lighting for improved safety and security, road pavement and pedestrian pathway upgrades for safe and convenient access to and from the station," said Ms Gibbons, who assured commuters alternative temporary parking will be provided to offset the unavailable spaces during construction.
"The provision for electric vehicle charging spaces, solar power and motorbike parking is also being assessed.
"It's important for the community to have their say on this upgrade, even in these times of social distancing, so the engagement will have an online focus.
"All feedback received will be considered in the development of the Review of Environmental Factors, which is the formal planning document for the project."
Transport for NSW is planning to make the new car park an Opal Park and Ride location meaning commuters will receive up to 18 hours free parking each day if they travel on public transport using their Opal card to ensure the spaces are available for people catching public transport.
Mr Andjelkovic has been campaigning for #MoreParkingNow for two years and two weeks. His online petition has more than 8000 signatures.
He is also pushing the south west rail link from Leppington to the future Badgery's Creek airport to be built as soon as possible to relieve some of the pressure on Edmondson Park and Leppington Stations.
"This is a step in the right direction. However remember that this is still in the promise/planning stage. The plans still need to be finalised and approved and funding needs to be officially allocated in the next budget," he said.
"This is a great step forward but more details need to be provided about the proposed temporary parking while the southern car park is closed.
"We have heard promises before so the pressure must continue until the whole project is delivered not just an announcement made that plans have started."
Ms Gibbons said: "Transport for NSW will continue to work with key stakeholders to finalise the plans for the remaining car parking spaces and more information will be shared with the community soon."
Meanwhile the On Demand public transport program - one of which operates at Edmondson Park - has reached a milestone delivering one million customer trips since the first vehicle hit the road in 2017.
The Edmondson Park trial, operated by Interline, is one of the best performing On Demand services of the 22 pilot programs and was recently extended.
Customers can book the service from the Interline App and follow the directions to meet their bus close to their home. Users transferring to the train receive a $2 transfer rebate through Opal Connect.
"Customers love the convenience of the Edmondson Park On Demand bus. The trial gives people more flexibility in how and when they travel to Edmondson Park train station." Ms Gibbons said.