The community garden joined the Brooklyn Queens Land Trust, which means it can't be sold or developed.
The city will consider other sites for affordable housing, so the disputed lot could become a park.
Poses Park on East 68th Street was closed to the public in 2009.
District 5 will take part in the participatory budgeting process for the first time this spring.
The proposed 2-acre plaza will have retail and event space, developer Brookfield Properties said.
One Community Board 8 Member suggested developers should pay for public green space.
Residents and activists expressed their concerns at a community board forum Thursday night.
The East River pier opened Monday, the Open Space Alliance announced.
East River State Park's dog run and four other projects won District 33's participatory budgeting vote.
The dog run is one of 16 projects proposed for a participatory budgeting vote.
The city finished acquiring nearly 25,000 square feet of parks space on 79th Street near Travers Park.
After soliciting responses from 130 people, the 82nd Street Partnership will present a plan to the city.
Groups behind the forthcoming hospital and nursing school complex promised to fix an area park.
Upper East Siders said the planned nursing school and hospital threatens the area's quality-of-life.
Residents and activists voice their concerns to Community Board 7 ahead of a vote Wednesday.
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