Let's take Mountain View. Looking at "houses" and "townhouses" on Zillow, the cheapest one is this one[1] for $1,295,000. Zillow says the estimated monthly cost is $6,176. I don't think that's possible on a $100k salary once you factor in taxes. Zillow also says the rent "Zestimate" is $3,949/mo, so Zillow thinks it would be cheaper to rent than to buy. One hypothetical reason that renting could be cheaper than buying is that landlords buy for the expected price growth rather than just for the rental income.

> you're presumably living somewhere right now.

Maybe with roommate(s). If you buy 50% or 33% or 25% of a house with your roommate(s), that's not really $100k buying a house, that's $200k or $300k or $400k buying a house.

[1] https://www.zillow.com/homedetails/1993-Plymouth-St-APT-8-Mo...