Street parking in the Sunset is certainly better than most parts of the city. Areas like Irving street, Judah street, and Taraval street are the busiest streets in the Sunset so it usually consists of more meter parking and may require a street permit to park for more than 2 hours. The outer Sunset would be better for parking since there are typically less restaurants and businesses.
The best thing to do is to check out the area where you think you want to live and see how the parking is for yourself at those times that you'll be needing it. This will tell you first hand how easy or difficult parking may be.
Have a good long weekend.
Rich Bennett, Realtor
Zephyr Real Estate
And yes the meter maids do drive around a lot and certainly mark tires to ticket beyond the time limits and will also issue tickets for blocking sidewalks even though you're in front of your own garage. Parking is usually available most days, but on a warm day or if there's a big event like Outsidelands going on, you may be searching for a while as people will flood the area nearer to Golden Gate Park.