In East Oakland’s Jingletown, a new twist on senior housing is in the works. The neighborhood known for its artists’ lofts will soon be home to Phoenix Commons, a “cooperative lifestyle community” for older adults. The four-story complex of 41 units will be the East Bay’s first senior cohousing development, according to project CEO Chris Zimmerman. Look for it on 29th Street overlooking the waterfront, just off Alameda’s Park Street bridge. Move-in date: early 2015.