The building next door has been driving me insane.
Car park exhaust fans installed at a similar level to my unit has been coming on very early in the morning and the noise is terrible.
I wrote to the Environment Protection Authority, and was told it's outside their jurisdiction. I was directed to contact the local council, and was asked to fill out a log documenting the extent and nature of the noise for two weeks to see if the noise constituted a public nuisance.
I judiciously filled out the log. A few days after I submitted it, I got a reply saying that the council can't do anything because noise of this nature is normal for the city between 6am to 11pm.
I politely pointed out that the noise was now coming on at 5am, which prompted another round of email exchanges (including a request for me to send them some photos). That was over a week ago. I haven't heard back since.
The joys of city living.