Finally bought my own house at 29 a few months ago. I turned 30 last month. I had lived at college for five years (barring summers) and later Korea for two years while teaching English. I then spent 3 years living with my dad's family while I got my graduate degree and working two part-time jobs. After finally getting a steady salaried job two years ago, I made plans to move out.
However, I fully acknowledged that buying a house in my market (South Florida) would have been im-fucking-possible without a substantial amount of help from family. They paid for the bulk of my down payment, and I handled the rest. It blew through all of my savings (thanks to a bullshit insurance bill a month after I closed on the house), but now I live alone in a 2/2 house with around $1,200 in monthly payments for mortgage and HOA fees. That may seem like a lot, but I was finding 1/1 apartments with monthly rent at that price.
It depends on the family, but take advantage of what you can. Job and housing markets in big areas can be hard to crack, and very few people have the kind of support network that I had. There's coworkers a few years older than me who still live with family or with roommates to save costs. EDIT: The stigma isn't that bad here since it's common with Hispanic families, but man oh man, my dating life would have gone a lot better if I had my own place.