Never really been a thing around here from my experience, and I grew up in Alamo, surrounded by the type of people who would happily flaunt a summer home. Second properties are usually in Tahoe or southern California somewhere, maybe Hawaii. I know a few people who have done the whole Napa thing and started their own labels of varying quality, but that's less common.
Summering/Wintering is more of an East Coast thing where there is crappy weather during those seasons. Northern California has never had to have that tradition for itself, where people are more likely to have a "cabin," or vacation house.
Sure, but Tahoe/snow residences are mostly called cabins and at any rate most people don't spend the whole season there so much as use it as home base when skiing or spending weekends and occasional weeks there.
