A 2.5-acre parking lot next to the former Evans School in the Golden Triangle neighborhood could be the future home of a 19-story apartment building, according to a concept plan submitted to the city on Thursday. Lennar Multifamily Communities (LMC), a real estate investment arm formed by homebuilder Lennar Corp. (NYSE: LEN), is considering building a 479-unit residential development at the corner of 11th Avenue and North Bannock Street. The proposed project, dubbed Evans West, would also feature ground-floor retail along 11th Avenue, while the ground level along Bannock Street would be dedicated to a residential lobby.