The perimeter of St. Albans Bay is ringed with camps, summer-only and year-round homes that have been there for ages. One of them — a handsome, charcoal-colored house with a distinctive red door — is brand-new yet holds a lifetime of memories. Make that several lifetimes. When Paul Hance and his seven siblings were growing up in Burlington, they and more than a dozen cousins would play at their grandparents' camp on the east shore of the bay. Years earlier, their great-grandparents had summered there, too. After his mother died in 2009, Hance served as executor of her estate, which had 19 heirs, aiming to assume sole ownership of the camp on behalf of future generations. The process took seven years. His goal? "I thought if there was any way to save it, I would," Hance said of the beloved family gathering place. Built in 1922, the camp had seen better days. Hance, now 63, is an artist and antiques dealer who splits his time between St. Albans and San Jose, Calif. "But I'm not a builder," he said. It was clear he couldn't simply renovate the place. With a sinking foundation, it needed to be dismantled and rebuilt from the ground up. "I didn't even know if I'd be able to financially afford [it]," Hance recalled. "I did a lot of research and watched a lot of restoration shows." That's how he discovered a way forward: Shelter-Kit, a company in Warner, N.H., that makes custom home-assembly models for DIY builders. "They send you all the lumber, including floor, stairs, et cetera — everything but the foundation," Hance explained. Selecting a model called the Patrick, he worked with Shelter-Kit for close to a year on the plan and budget. (According to the website, the Patrick with a partial loft now sells for $76,500; Hance paid $52,000 in 2018, plus $700 for delivery.) Meantime, Hance and a team of handy family members got to work. Hance wanted some small pieces of the old camp to be included in the new one. So, before he began to dismantle the existing house in summer 2016, "I went in and grabbed what I thought I could use: the front door, tie-rods, some floorboards," he said. His rescues weren't just architectural. He kept objects including his grandma's dishes and kitchen sink, assorted artwork, an 1820s Sheraton side table, and a plastic train…