Since 2013, Irvine residents have expected to see as many as 9,500 homes built around the Great Park, under an agreement between the city and developer FivePoint Holdings.,Now the upper limit could grow to 10,556 homes, after FivePoint affiliate Heritage Fields asked recently to change how some of the homes are counted – subtracting the affordable units that are being built and providing leeway to build more homes overall.,FivePoint CEO Emile Haddad said Monday the proposal would simply use the city’s existing rules meant to encourage development of affordable housing, and adding more homes of any kind could help ease traffic by allowing some of the thousands of people who commute to jobs in Irvine to live there as well.,FivePoint is using a city rule to designate all the affordable homes as “additive,” which means they wouldn’t count toward the total number that can be built, so the developer could build that many more market-rate homes.,It’s the first time the city has gotten a request to change the designation of already-built homes, and it’s the first request to use the city’s “additive” provision on a project that already took advantage of a state law granting the right to build more homes if the project includes a certain percentage for low-income residents, according to a city report.