Parking Districts?

[firstfrost.livejournal.com]

A guest of mine got a ticket marked "out of area" for parking half a block from my house. So, I'm writing to contest the ticket, and one thing I note is that I can't find documentation anywhere about what area a guest permit marked "district C" actually covers. My google fu has failed me. Any suggestions?

Comments

[watchamacallit.livejournal.com]

They don't specifically say at the parking office (that way they can ticket at will) but I was told to stay within one block to be safe.