Who Is Responsible?

The best way to address this (for now) is to file a claim with your insurance company and let them duke it out with the association's insurance company. I don't know if you can expect this to be fixed this week (as I write this, it's Tuesday, but you might get lucky), but I would hope this is completed by mid-August, if not sooner.

If you want to handle this yourself, that's fine, but I wouldn't get too concerned if you have to go to Small Claims Court if the board cannot or refuses to do the right thing. Don't worry about the neighbors either - this is your home and sometimes you have to do what's necessary. Besides, I'm sure they'd do the same thing if this happened to their home.

If you haven't already done so, start keeping a written record of who you spoke to, when you talked to them and what was said. Send a formal letter to the board via the property manager if you have one, with photos (hopefully you took some that are time and date stamped when you discovered the problem). In your letter, ask for a SPECIFIC date when you can expect the work to be completed - send it certified so you have a record. If necessary, go to a board meeting and ask if they've received it and repeat the question.

Of course, you know to keep copies of letters, emails, etc., for your records in case you do take legal action because you'll need a paper trail.

You said the board member was doing the work - is he a plumber? Personally, I think hiring board members to do association work is a conflict of interest (your neighbors might want to rethink if he should be on the board when the time comes for the next election). Anyway, if he was fixing the pipe, I would think he's a plumber - and therefore, you might want to check with the county or whoever regulates plumbers to see if he's licensed and bonded. If not, the board needs to explain why he's doing the work and didn't have the decency to tell you about the property damaged in the first place. Good luck!