Yep, did it 2x... Buckle up:

1st-time: apartment had moisture ingress issues along the exterior ceiling, and management was trying to blame us for steaming up the apt. with too-hot showers, too much stove-top cooking... All sorts of dipshit excuses. The ceiling sheetrock was so wet & soft I could push my fingers into it.

We called the city building inspector, and they said they weren't allowed to cut holes in walls to investigate, but if there was already a hole they would have no problem coming over and checking the ceiling/frame/roof.

We asked the management/maintenance dopes to cut a hole - at our expense - to check for mold, and so they did, and stuck a moisture meter up in the roof. They said it was bone dry.

At the very moment, the city building inspector showed up (how convenient!) and jammed his arm up into the ceiling to investigate. He pulled out a handful of water-logged insulation, and after two minutes of it inspecting, he discovered a list of building code violations.

The complex was already under a state mandate to replace all furnaces due to CO leaks (four times while we were there...fun), mold repairs along entire exterior/interior walls, and shoddy building codes.

Fuck you Stone Farm in Lebanon, NH.

2nd-time: Moved into a rental house in West Lebanon that had just come onto the market. It was a pre-1980s but, renovated to NH code, and came with the regular lead paint warnings.

It looked good for a week, but the new paint began to crack and chip all around the house, and you could see the vibrant blue base layers popping out. Fuck that.

Called to complain to the home-owner, and they made up some low-effort excuse about how they provided the bare minimum of lead paint mitigation, blah blah blah.

They could have been cool about it, but the wife/GF of the owner was an argumentative hag, so under threat of calling in the state inspector we packed up, and left. They tried to threaten to keep money and sue, but we knew they were full of shit.

TL;DR : find a legitimate code violation, if possible.