Edit:
So the numbers are not a direct exchange rate to USD.
Q: How were dollar values assigned to households? A: The households’ door numbers represent the consumption values (US dollars) that each adult in the household has per month. This figure comes from a combination of the household’s self-reported consumption and income levels. We then checked the official cost of living data in each country to adjust the values for purchasing power parity (PPP) and converted the value into US dollars. Read more about how we assigned the Dollar Street values here.
They fix the toilet for $200, I need to earn $400 to have that $200, and the toilet repair person gets to keep $100 after their taxes.
$400->$100 in one go. Government keeps $300. Make that make sense.
I'm not familiar with the situation in San Francisco. But in Santa Cruz, the cost to own with a 20% down payment is ~50% higher than the rent for the same unit. If you can't afford a substantially higher down payment, you're not really in the market for a home.
With $7k/month after tax, you would probably be renting an 1br, or maybe a cheap 2br. But your income is not high enough to buy anything, unless you start looking for homes well outside the town.
* in an area not going to get shot or mugged
* structurally earthquake safe so that we don't die