DBtoOC said:
Help drive down the AirBNB rating for that property by making the experience 'no so pleasant' for the guest.
As a former vacation rental owner for 7+ years, I'd advise against this. Especially if you live right next door.
You really don't want to provoke out of town travelers on a short term stay who already demonstrated a lack of regard.
They can easily cause property damage just before they leave (spray paint your garage, urinated on your front door, throw a rock to break a window,etc) and get away with it.
Plus the OP indicated this owner has multiple properties in Irvine. Chances are they advertise on multiple platforms like VRBO, HomeAway, Expedia, Flipkeys in addition to AirBnb. So getting them a bad review on a single listing on a single platform is rather useless.
To the OP, I'd advise getting your HOA involved. The most likely reason the city has done nothing is your complaint wasn't made with enough evidence attached. The city is not even going to issue a citation if there's not enough proof to verify which Unit is in violation.
Getting your HOA to issue the owner a violation would go a long way. Plus the HOA can keep the heat on the owner more so than the city can.
The city has to first issue a citation & allow them time to shut down. Then if they don't, they would send cease and desist letter which allows them more time. After that they get fined, but it allows them more time and they can appeal. And all they have to do to get the city to back-off, is to change their minimum stay to 30 nights.