You're going to have to show listings. Last time, people were posting spam postings they found on Craigslist. If you want an apartment - you can find 1-bedroom "luxury" apartments (also known as normal apartments outside the bay area) for about $3300-4000/month. Even at $7000/month income that leaves "thousands" left over but that is a fucked ratio of expenses. You shouldn't be spending close to 50% of your take home on RENT. You will never be able to retire and live the same lifestyle.
If you want a house, you're not finding a nice house (3+ bedrooms, central air, etc.) and in a nice neighborhood (San Carlos, Hillsborough, Palo Alto, Los Altos, Los Gatos, Menlo Park, etc.) for $4000-5000. I'd love to see the listings... I don't even bother with SF because the prices are even more outlandish for nice neighborhoods.
Familiar with the city and actually paying rent here are different. I've had coworkers who lived with their parents who are wildly out of tune with how much it costs to rent a place. I don't know how your friend affords a high rise on $140k/yr - maybe you should ask what their rent is and if they're sharing it with someone.
You can't buy a house now with $250k/yr in inner sunset. Go to Zillow and find me a nice house you can afford on $250k/yr and won't be house poor in the end with. Do it - prove me wrong.