The branch basically owns all the Kingdom Halls now so they would look after their property.
That being said if the local Kingdom Hall that you attend burns to the ground you will be guilted into donating and providing free labour to rebuild the Kingdom Hall that your congregation bought and paid for and was expropriated by the branch.
That’s how con artists operate. They are not satisfied in taking from you once, they want to take again, again and again.
When the congregation held title to the Kingdom Hall the branch would charge a couple hundred bucks a month for “insurance” but it was basically another income stream for them.
If the Kingdom Hall suffered a loss they would guilt free labour and money from the minions to rebuild the hall.