Who Is Liable When an Upstairs Neighbor Floods Your Unit?

When water from an upstairs unit damages yours, liability depends on three factors: the cause of the water (sudden pipe failure vs. negligence vs. long-term leak), the HOA's master policy structure, and your state's condominium liability statutes. There is no universal answer — the same event can result in different coverage outcomes depending on these variables.

If the upstairs neighbor was negligent — left a faucet running, failed to report a known leak, or caused the damage through an intentional act — their homeowners (HO-6) policy's liability coverage applies to your damages. If the water came from a sudden, unforeseeable pipe failure within the shared building structure (not inside either unit), the HOA's master policy typically covers structural damage and the neighbor's HO-6 covers your personal property through subrogation.

Always file with your own insurance first, regardless of who you think is at fault. Your insurer will pay your covered losses and then pursue subrogation (reimbursement) from the responsible party's insurer. This protects you from delays while liability is disputed. Document the source, the neighbor's unit number, your conversation with building management, and all damage with video before any cleanup begins.