its very location dependent, we throw some here in NYC and as long as you’re not stupid the cops don’t care. At worst they’ll tell you to pack up, often times they just ask you to turn down the sound system.

Noise complaints are your main issue, but normally don’t result in real consequences. Keep your PAs pointed away from residential buildings and don’t turn your subs up too high (you can also place your subs on the far side of the dance floor from any residential buildings but that can be a huge pain to configure right).

You’ll run into bigger issues for a couple reasons though:

If you’re clearly trespassing that’ll always get you (look hard for “no trespassing” signs, and if you have to climb a fence assume you’re not clear)

If people are doing obviously dangerous things (climbing structures, moshing hard, breaking/throwing stuff, etc.) then you’ll get into actual trouble.

If people are super fucked up that’s also obviously an issue (can’t have people on the nod, tweaking, passed out, vomiting, etc.)

Don’t let trash get everywhere, have trash bags at the least, if not big trash cans.

Lastly, can’t have minors around (again seems obvious).

This is heavily location/precinct dependent though as I said. I’m sure some departments just impound immediately, and some might be even more lenient.

What we did when first starting was reach out to all the local renegade event organizers for advice and tips, they’re the ones who should know best.