Amelia and Sydney Stoker are 39-year-old identical twins who work together at their orthodontics practice, Twin Smiles Orthodontics, in the San Francisco Bay Area. In July 2022, when the house next door to Amelia's husband's childhood home hit the market, they did the thing most siblings only talk about at Thanksgiving: Sydney and her husband Paden Roder bought it. The family compound was born. The setup is deliberately engineered for friction reduction. The backyard fence between the two properties is gone, merging the land into a single shared space. Two ADUs (accessory dwelling units) sit behind the houses — one housing two au pairs who collectively mind all five children (three belong to Sydney, two to Amelia), the other rotating between Sydney's mother-in-law and the Stoker twins' own mother when she visits. Amelia's in-laws live down the same street. The density of available adults is the structural advantage. The economics are pooled where it matters and separated where it doesn't. A shared family credit card covers compound expenses — Costco runs, paper towels, dinner ingredients. Cooking duties rotate on a fixed weekly schedule: Amelia's household on Tuesdays, Sydney's on Thursdays, Sydney's retired mother-in-law on Mondays, Wednesdays, and Fridays. Every weekday evening, all seven adults and five kids eat together. By 7:30 PM, everyone retreats to their own house. The boundaries are real. The catalyst was Amelia's husband Adam Fagin, who grew up in the Bay Area house his parents still owned and had been renting out during his studies. When the neighbor's four-bedroom went on the market, Fagin talked Sydney and Roder past their hesitation about Bay Area costs and proximity fatigue. Around the same time, a commercial building came up for the twins' orthodontics practice. Sydney describes it as feeling like fate, though the logistics were carefully deliberate. What the Stokers have built is a working answer to the childcare crisis that doesn't require policy intervention or employer benefits — just proximity, trust, and a willingness to share resources. Sydney credits the compound with making a third child feasible. Amelia says they have more free time than friends raising kids in isolated nuclear households. The au pairs share duties across all five children rather than being siloed to one family, which is a genuine efficiency gain. The men in this arrangement are notably enthusiastic. Fagin, an only child, frames the compound as giving him the sibling relationship he never had. Roder talks about watching his nieces grow up alongside his own kids and building relationships he hopes will last their lifetimes. Neither treats the arrangement as a compromise — both describe it as an upgrade on the default model of two parents alone in a house. The unspoken reality here is that this requires specific preconditions most families don't have: a family-owned house in the Bay Area already paid for, a second house appearing next door at the right moment, two dual-income professional households with the capital to buy in one of America's most expensive markets, and — perhaps most critically — two couples who genuinely like each other enough to eat dinner together every night. The Stokers built something real, but the recipe isn't replicable by will alone. It's a proof of concept for communal living that works precisely because it wasn't communal ideology — it was family pragmatism backed by fortunate circumstances.