The Legacy Barn. The Foundation Chronicles, #9

Ten years is a long time to keep a secret, but the growth of Sterling Solutions can no longer be contained in a four-bay garage. In The Legacy Barn, the family embarks on their final massive structural build: a secondary "Legacy Barn" designed to house the heavy machinery that has become the backbone of the ridge's economy. But the barn serves a dual purpose. It is the training ground for fifteen-year-old Leo, who has spent his childhood as the "Apprentice" and now prepares to follow in his father's footsteps.
As Grant handles the massive steel spans, he realizes he is no longer the only master builder on the property. The legacy isn't just the 20 acres or the windfall-it's the transfer of the "Sterling Standard" to the next generation.