The master plan for the $5 billion “Dorchester Bay City” project, which calls for turning the site of the former Bayside Expo Center and surrounding parcels into a sprawling commercial and residential hub, is expected to go before a key city agency’s board next month.

Initially expected to be on the agenda for August’s meeting of the Boston Planning and Development Agency (BPDA) board, the plan now faces another month of review by agency staff members.

The date extension was announced at a July 26 meeting of the project’s community advisory committee (CAC), which is tasked with reviewing proposed mitigation as part of the BPDA’s process. Some CAC members pressed for an in-person meeting to discuss mitigation measures, and a BPDA staffer said they would consider the request.

Currently home to asphalt parking lots, the project has been the subject of hundreds of community meetings over the last three years. Changes since 2021 include the removal of a building and the addition of a 6,300 square-foot pavilion near the water’s edge and an esplanade, and the relocation of two buildings farther back from the waterfront, which are owned by the state Department of Conservation and Recreation.

The size of the development has also shrunk to 6.1 million square feet, from 6.5 million square feet. The total of green space has increased to 9 acres from 6.8 acres, with project proponents planning to install 1,000 new trees.

The developers, Kirk Sykes and Dick Galvin of Accordia Partners, pledged to build 3.7 miles of new bike lanes and create 4,500 parking spaces for bicycles. The list of improvements also includes $62 million for a new street network for the site.

Due to the Columbia Point peninsula’s vulnerability to rising sea levels, the project budgets $5 million to raise the Harborwalk by the Harbor Point Apartments, a raised ridge of 22.5 feet running from Harbor Point to Moakley Park, and elevating the entire project site by 21.5 feet.

Overall, the project could create 25,000 construction jobs and bring 15,000 permanent jobs to the area, revolving around research, office, retail, restaurant, services, and construction sectors.

The developers have also pledged to create a $8.25 million community benefits fund, which nonprofits in Dorchester and South Boston can apply for. Roughly 25,000 square feet of retail space will be set aside for independent local, minority, and women-owned businesses.

The project’s timeline calls for the state-level filings to come next month with 2024 eyed for breaking ground.

“In early 2024, we’ll be coming back…for each building to get community and municipal approval, which we’ll be engaging you along the way,” Sykes said during the July 26 community meeting.

Galvin said he remained confident about the project even as some have noted a wobbly economy to him. “A lot of people have asked us over the last year, in particular, ‘Gee, the life science economy feels like it’s on its rear end,” he said, “and what about work from home? Who’s going to come here?’ One of the things I’ve observed in 40 years in this business is that Boston can be a resilient place,” he added. “The underpinnings are all based on the incredible institutional assets and universities, and hospitals, and the amount of innovation that comes out of it.”