Buying a family-sized home with three or more bedrooms used to be manageable for young people with children. But with home prices climbing faster than wages, mortgage rates still close to 23-year highs and a shortage of homes nationwide, many Millennials with kids can’t afford it. And Gen Z adults with kids? Even harder.

Meanwhile, Baby Boomers are staying in their larger homes for longer, preferring to age in place and stay active in a neighborhood that’s familiar to them. And even if they sold, where would they go? There is a shortage of smaller homes in those neighborhoods.

As a result, empty-nest Baby Boomers own 28% of large homes — and Milliennials with kids own just 14%, according to a Redfin analysis released Tuesday. Gen Z families own just 0.3% of homes with three bedrooms or more.