Quote from @Joe Homs:
@Gopichand N. your HOA is probably only responsible for anything inside the common walls. They would probably not cover this, so it's your responsibility as a landlord. You can always ask? Just have it fixed by your plumber and move on...
Good Investing...
@Joe Homs - Thats how anyone sees it by general agreement and thats probably the HOA first response but in this case, firstly I have no idea of this as the base is 100% caulked before I even purchased this, secondly ,if I press the flooring in the bathroom I see water just pops up ,or the hardwood flooring in the living room feels like a bit wet underneath, it could have spread to other apartments flooring as well and it could impact the whole building (you won't know until someone opens the flooring) ,want to brainstorm on how to convince HOA to chip in? or I don't have a chance here ,my HOA is pretty reasonable if they feel justified which I think is the case here