Calculate using real San Francisco data. Median home price: $1,200,000. Property tax rate: 0.74%.
With the median household income of $126,187 in San Francisco, CA, following the 28% rule, you could afford a monthly payment of about $2,944.
The cost of living index in San Francisco, CA is 190 (national average = 100). A home at the median price of $1,200,000 would require roughly 9.5x the median income.
A conventional 20% down payment on the median San Francisco, CA home ($1,200,000) would be $240,000. FHA loans may require as little as 3.5% ($42,000).