There are a lot of houses like this one in San Francisco. It’s rare to have buildings any older because of the great eathquake of 1906. I believe one of the oldest buildings in San Francisco is Mission Dolores. Mission Dolores was founded in 1776.
One thing you will notice about San Francisco is that everyone has a dog or two. You can find dog culture everywhere here. Take a look at the house above. Notice the Labs decorating this victorian? (click on picture to see better)

what a great house! the dog trim is awesome!
A friend came to visit me in the Bay Area (I live in the South Bay) and wanted to see SF. We took one of those double-decker bus tours. Having grown up in the Bay Area and spent lots of time in SF, I was surprised by how much I learned. One thing? There are more dogs in SF than children.
when choosing to buy a dog house, always choose wood based dog house or if you can afford one, choose steel based*`.