Just a thought, you don't say what kind of rooster you have. I have two, one is a big (BIG) light sussex and the other is an OE (marans/ameraucana). The OE's crow sounds like a siren going off, really long and piercing. But the sussex's crow is very deep and doesn't carry that far. I guess a neighbor who likes to complain might still have an issue with it, but it's something to consider. There really is a big difference between my two - maybe you could find a roo with a deeper "voice" if you're intent on keeping the peace.