The proposal would allow Buckhead City to acquire Atlanta park land within its boundaries for just $100,000 per acre, even though an acre in the neighborhood can command 10 times that amount. Atlanta would also have to either split all assets outside its city limits with the proposed Buckhead City borders or sell them and split the proceeds. Georgia’s legislature has allowed unincorporated areas around Atlanta to vote to form their own cities for nearly two decades. But it has allowed only one vote to leave, a wealthy subdivision inside the small city of Stockbridge south of Atlanta. Although rumblings about a potential Buckhead split have gone on for years, the effort picked up steam last year due to concerns about crime.