CARRBORO - A developer has asked the Board of Aldermen to wait until the fall to review a proposed charter school and other major changes proposed for the Claremont South mixed-use project on Homestead Road.

However, the board will review the developer’s request to increase the types and density of housing in the project at 7:30 p.m. Tuesday.

Omar and Adam Zinn, of Parker Louis LLC, want to modify a conditional-use plan approved in April for 92 single-family homes and one acre of commercial space on 38 acres.

The modification seeks an additional 28,000 square feet of commercial space and a mix of roughly 80 townhomes or apartments and 37 single-family homes. It also includes a two-story school, a soccer field, playground and gymnasium.

The board voted in April to let the Zinns build some smaller homes priced at roughly $200,000. The other option would have been to sell 15 percent of the homes for less than market value through the Community Land Trust

Neighbors and critics of the project expressed concern last week that more homes and the proposed Howard and Lillian Lee Scholars Charter School would increase traffic and harm Bolin Creek.

Adam Zinn said the project’s commercial component will meet new Jordan Lake pollution mitigation guidelines. He and his brother will work with town staff this summer to complete a formal traffic study and review other details, he said.

In addition, the school will have different start times from other nearby schools, helping to reduce the traffic burden on Homestead Road, he said.

The National Heritage Academies, a for-profit charter school company based in Michigan, plans to operate the Lee charter school on seven acres in the eastern part of Claremont South.

Adam Zinn said they are still reviewing the school’s contract.

Doris Jackson, president of the school’s board of directors, said in a recent letter that the school could open in late 2013 if the plan is approved by January.

The school will target minority students and focus on closing the achievement gap and a college prep curriculum. According to its charter application approved in August, it will initially open as an elementary school then expand to serve students through eighth grade.

Since the opening is delayed, its charter will have to be re-approved by the state, said Joel Medley, director of the state Office of Charter Schools.