With seller's permission: Unscrew the shower head and put it on shower floor.

Once any ongoing damage has been mitigated, you'll need to have a lot of contact with your insurer to discuss your rehab plan.

@Marcus Stokes Starting your first fix-and-flip can be exciting but requires careful planning.

I am planning to pass on the cost to them both 50/50 since i dont know who flipped the switch, what do you think? 

Quote from @Richard Eric Hughes: My question is what ae you planning to do?

Of course, the floor plan has to be conducive to this.

Just keep in mind that using that emergency fund to buy your next property and having tapped a HELOC already may leave you in a bad spot if you run into a similar problem again.Also, I’m not 100% sure, but I have heard that personal loans don’t your credit more so than other types of debt so be sure you look into that if you go the personal loans route and then planned to finance your next purchase soon after.

@Roman Balmakov If you are planning on holding the property long term and have enough reserves to cover even worst case scenarios it could still be worth it. 

Since you are not doing super high end finishes as mentioned, doing high end flooring and all other stuff just above builder grade does not warrant tile or full wood flooring. 

If not, the only requirement may be filing plans with the dept of buildings.One of our contractors does the bulk of his work on contracts with NYC.Mainly work related to bathrooms & tiles/flooring, I will shoot you a PM if I can get any information on this.All the best!