Is this legal? Neighbor posted a no parking sign

Got a ticket here on Tuesday for being a few inches in the red. Totally my fault, just annoying because it was under 24 hours (Monday night to Tuesday afternoon) and we have street cleaning on Wednesdays so my car would have moved anyways. The ticket was listed as a complaint though so my assumption is the neighbor called it in. Today I see that they installed their own sign for no parking, tow away zone. They also painted the street (which I’m not mad about, that’s helpful when parking). I get the “don’t block the garage” and “red zone enforced” signs but this just seems like an asshole move…

Got a ticket here on Tuesday for being a few inches in the red. Totally my fault, just annoying because it was under 24 hours (Monday night to Tuesday afternoon) and we have street cleaning on Wednesdays so my car would have moved anyways. The ticket was listed as a complaint though so my assumption is the neighbor called it in. Today I see that they installed their own sign for no parking, tow away zone. They also painted the street (which I’m not mad about, that’s helpful when parking). I get the “don’t block the garage” and “red zone enforced” signs but this just seems like an asshole move…