Winters recently approved what would be the largest residential project in two decades. Granite Bay Holdings would build more than 400 single-family homes on 100 acres in the city’s northwest corner. It’s also required to aid schools, reopen the community pool … and expand the city’s sewage treatment plant. However, that expansion would be on land owned by Richland Planned Communities … which has also wanted, and failed to get, an OK for an even bigger home-building effort. Richland is suing. City officials are holding fast. And for the moment, neither project is underway.