Sylvania Heights Community & Youth Club will be able to upgrade facilities built 40 years ago after topping the vote in Sutherland Shire in the My Community Project program.
The club, which received 1783 points under the preferential voting system - the highest number in Miranda electorate and the shire overall - will receive a state government grant of $200,000.
Burraneer Bay Public School's oval upgrade project will also receive a $200,000 grant after receiving 1683 points, the highest in Cronulla electorate.
Patchy old grass on the oval will be replaced with synthetic turf for the benefit of school students, before and after school care children, local sporting groups and members of the wider community.
Bellingara Netball Complex is the shire's only other winner, with a grant of $38,679 to fund nine sun safe shelters.
The project gained 1627 points in Miranda electorate.
In Heathcote electorate, the Helensburgh Mountain Bike Park will be expanded through a $60,500 grant.
The campaign, run by Helensburgh Off Road Cycle Club, resulted in 2718 points.
The Stanwell Park CWA Community Hall will be renewed with a grant of $198,000.
The voting system gave points for each preference, with voters asked to rate between three and five projects.
First preference votes were allocated 10 points, with the number gradually decreasing to one point for fifth preferences.
More than 40 community infrastructure projects in the shire were nominated for funding, with a maximum of $260,000 available to each electorate.
In a joint statement, state MPs Mark Speakman (Cronulla) and Eleni Petinos (Miranda) "thanked all applicants and sponsors for taking the time and effort to develop their ideas and promote their projects along with the members of the community who voted".
"My Community Project captured the imagination of the community with people putting a lot of work into their ideas and it was great to see people get behind the projects that matter to them," Ms Petinos said.
The Sylvania Heights Community & Youth Club submission said, "After 40 years of continuous community use, SHCYC's amenities are no longer fit for purpose and in need of upgrading.
"The existing change room facilities have deteriorated to a point where they are hardly used, cramped and a major barrier for female participants.
"We're keen to refurbish, so the local community can access modern and fit-for-purpose amenities.
"The redesign will include female-friendly amenities and refit existing change rooms, so they support the diverse range of community activities and major sports promoted by SHCYC.
"Better facilities foster stronger engagement and participation."
The Burraneer Bay Public School submission said upgrading the oval would benefit about 600 students, as well as the Before and After School Care Centre attached to the school, vacation care, local sporting groups and the wider community to use the oval safely.
"This will promote a healthy lifestyle and improve the well-being of students and the local community," the submission said.
"The project will also prevent school students, local sporting groups and the wider community from tripping on the oval's uneven surface, which is in urgent need of repair."
Details on successful applications: www.nsw.gov.au/mycommunityproject