Saturday in Fairmount starts on the porches: coffee on the swing, a screen door clapping shut, a bungalow's narrow front lawn waiting under a June sky that has not turned hot yet. BBB Lawn Care works Fort Worth yards in that early, forgiving hour, when the St. Augustine still holds the night's cool and each pass of the mower lays a straight stripe down toward the curb. These Craftsman blocks were built for strolling, and a well-kept lawn is the first thing a neighbor notices on the walk up to Magnolia Avenue. By the time heat starts shimmering off the pavement, the grass lies even, the clippings are swept from the walk, and the house looks like it is sitting up straight. Small work, done house by house, and in Fort Worth it adds up to a street worth coming home to.