I don't know about tournaments, but in my leagues there are no rules governing height. If you play in a church hall you have to avoid the beams too. 🙂

Hitting the roof has to be a fault otherwise you could just hit straight up to get a let when you are caught out of position.

Just remember that it's the same for your opposition, if the hall is stopping you from doing something, then it's stopping your opponent too. Focus on what you can do rather than what you can't to keep that positive frame of mind.

I'm surprised there aren't any rules concerning the height of the hall in other countries, because here in Luxembourg the halls must actually have a certain height, 7 metres if I remember correctly.

Its a lot more of a problem in singles than in doubles, I would agree that for any reasonable level of singles a high hall is required.  Playing in a very low hall for league doubles the game becomes very compressed, everyone moves the base forward and you never have to move your feet onto or beyond the backline because the lifts or clears are too flat and can be intercepted.  

I know people say it teaches you to play flat but the problem is if you play low halls a lot you will have big gaps in your game: you won't be used to moving behind the shuttle on baseline, you can't lift high off a tight or spinning net shot, you don't have chance to develop a jump smash. Your general movement will suffer because the game is so flat and compressed. In the worst case players can develop only a short hitting technique overhead because all they hit from are punch clears/flat lifts in the midcourt. You can always choose to play flat in a high hall.

Having said that I have more of a problem with playing in all white halls or slippy halls than low halls and would rather see those outlawed.  If teams weren't allowed to play in white venues surely it would put pressure on new venues to get it right?