TL;DR: In a condo building, water damage responsibility is split between two policies: the building association’s master policy (which covers shared structure and common areas) and each owner’s HO-6 policy (which covers the interior of their unit). When a leak crosses unit lines, which policy pays depends on where the water originated, what your master deed says about the boundary between “unit” and “building,” and whether the neighbor who caused the leak was negligent. Read your master deed before you file anything.
You woke up to a wet ceiling or a soaked floor, and the water came from somewhere above you. Or maybe you are the upstairs owner and your neighbor just knocked on your door with photos of their ruined hardwood. Either way, you are now inside one of the most genuinely confusing insurance situations in residential real estate: a condo water loss that crosses unit lines.
This is not the same question as whether homeowners insurance covers a burst pipe in a single-family house. Condo ownership layers two separate insurance policies on top of each other, and the boundary between them is defined by a legal document most owners have never read. Here is how it works in plain language.
What is the difference between the master policy and an HO-6?
The building association’s master policy and your personal HO-6 policy cover completely different things, and both will be in play when water crosses unit lines.
The master policy is purchased by the homeowners association (HOA) or condo association and covers the building as a whole: the roof, exterior walls, hallways, elevators, shared plumbing risers, and common areas. Most master policies also cover the building’s original fixtures inside each unit, though this varies significantly. The association pays the premium; every unit owner funds it through their monthly dues.
The HO-6 policy is your personal condo insurance, purchased by you and covering your unit’s interior. A standard HO-6 covers your personal property, your improvements and betterments (upgrades you made to the unit above the original builder finish), liability if someone is injured in your unit, and loss of use if you have to live elsewhere during repairs. Critically, a good HO-6 also includes “loss assessment” coverage, which protects you if the association levies a special assessment against all owners after a large loss.
The New Jersey Department of Banking and Insurance outlines what these policy types cover for NJ residents, and the distinctions matter because NJ has specific requirements around condo association master policies.
Where does one policy end and the other begin?
The boundary between the master policy and your HO-6 is defined by your master deed, not by any universal rule. This is the most important thing to understand about condo water damage.
Most master deeds use one of two frameworks:
“Bare walls in” (or “studs in”): The master policy covers everything up to the bare drywall surface. Your HO-6 must cover the paint, flooring, cabinets, appliances, fixtures, and everything else inside that shell. This is common in older buildings and puts more responsibility on individual owners.
“All in” (or “all inclusive”): The master policy covers original fixtures, flooring, and built-ins inside each unit. Your HO-6 still covers your personal property and any upgrades you made, but the base unit finishes are under the master policy. Newer condo developments often use this structure.
Why does this matter for a water loss? If water from an upstairs unit soaks your ceiling and ruins your hardwood floors, whether those floors are covered by the master policy or your HO-6 depends entirely on which framework your building uses. Pull out your master deed and look for the section defining “unit boundaries” or “insurable interest.” If you do not have a copy, your association manager or the county recorder’s office can provide one.
Who is responsible when water comes from a neighbor’s unit?
Responsibility for a cross-unit water loss generally follows one of three patterns, depending on what caused the leak.
Negligence by the upstairs owner: If your neighbor left a bathtub running, failed to maintain an appliance, or ignored a known leak, their HO-6 liability coverage is typically the first line of defense for your damages. Most HO-6 policies include personal liability coverage for exactly this situation. You would file a claim with their insurer, or your own insurer would pay you and then pursue subrogation against the neighbor’s policy.
Building system failure: If the leak came from a shared riser, a common-area pipe, or building infrastructure, the association’s master policy is usually responsible. This is why it matters whether the pipe that failed was inside a unit or part of the building’s shared plumbing. A washing machine hose inside unit 4B is the owner’s responsibility. The main supply riser running through the wall between units is the building’s.
No clear negligence: This is the hardest situation. If a pipe inside your neighbor’s unit failed without any negligence on their part, their liability coverage may not apply. In that case, your own HO-6 property coverage becomes your primary resource, and your insurer may or may not pursue the neighbor’s policy depending on the facts. Some states have specific statutes on this; in New Jersey, the analysis is fact-specific and your insurer’s subrogation team handles it.
For a deeper look at how homeowners policies handle sudden versus gradual water losses, the does homeowners insurance cover water damage guide on this site covers the underlying policy mechanics that apply to HO-6 policies as well.
What about the HOA’s responsibility?
The HOA’s responsibility in a water loss depends on what the association controls and what your governing documents say.
Associations are generally responsible for maintaining shared systems: the roof, exterior envelope, common hallways, and the building’s main plumbing infrastructure. If deferred maintenance on a shared system caused the loss, the association may bear liability. If the association’s master policy has a large deductible (some high-rise building master policies carry deductibles of $10,000, $25,000, or more), the association may assess that deductible against the unit owners involved. This is exactly why loss assessment coverage on your HO-6 matters.
High-rise buildings in Hoboken, Jersey City, Fort Lee, and similar dense markets often have master policies with significant deductibles precisely because the buildings are large and the per-occurrence risk is high. If you own in one of these buildings and have never checked your master policy’s deductible, that is worth doing before you need to file a claim.
What should you do right now if there is active water damage?
Stop the water first, then document everything, then sort out the insurance.
Step 1: Stop the source. If the water is still coming in, notify building management immediately. They can shut off the riser or access the unit above. Do not wait for insurance questions to be resolved before stopping active water intrusion.
Step 2: Document before anything is moved or dried. Take photos and video of every affected surface, including ceilings, walls, floors, and personal property. Timestamp everything. This documentation is the foundation of any insurance claim, regardless of which policy ultimately pays. The storm damage insurance claim checklist covers documentation best practices that apply equally to water losses.
Step 3: Call a restoration company. Wet building materials begin to support mold growth within 24 to 48 hours under the right conditions, according to EPA guidance on mold and moisture. Getting a certified restoration crew in to extract water and begin structural drying is not a luxury; it is how you protect the claim and the building. An IICRC-certified firm will document moisture readings, drying logs, and equipment placement in a format insurers recognize.
Step 4: Notify your insurer and the association. File notice with your own HO-6 carrier regardless of who you think is ultimately responsible. Your policy likely requires prompt notification, and your insurer can help navigate the subrogation question. Notify the association in writing as well.
Step 5: Read your master deed. Before you accept or dispute any coverage determination, read the unit boundary definition in your master deed. If the language is ambiguous, a public adjuster or an attorney familiar with NJ condo law can help you interpret it.
The water damage restoration service page has more on what a professional mitigation scope looks like, including the moisture mapping and drying documentation that supports insurance claims in multi-unit buildings.
What does a condo water damage claim actually look like in practice?
Here is a realistic scenario: a supply line to the dishwasher in unit 8C fails overnight. Water migrates through the subfloor into unit 7C below. The owner of 7C wakes up to a soaked kitchen ceiling and warped hardwood floors.
- The owner of 8C files a claim with their HO-6 liability coverage for the damage to 7C.
- The owner of 7C files a claim with their own HO-6 for their personal property and any improvements not covered by the master policy.
- The restoration company documents both units with moisture meters and thermal imaging, producing unit-by-unit drying logs.
- If the building uses a “bare walls in” master deed, 7C’s HO-6 covers the hardwood floors. If it uses “all in,” the master policy may cover the original flooring.
- If the master policy deductible is $10,000 and the loss is $8,000, the master policy pays nothing and the individual policies carry the whole loss.
This is why having an adequate HO-6 with strong loss assessment coverage matters more in a condo than in a single-family home. The layered structure creates gaps that individual policies are designed to fill.
The Restoration Group handles commercial restoration for multi-unit buildings and condo associations across New Jersey and the New York metro area, including the documentation-intensive work that high-rise associations and their insurers require. If you have active water damage in a condo or multi-unit building, call (855) 650-7422 any time, day or night.
About The Restoration Group
The Restoration Group is an IICRC Certified Firm (#210213) serving New Jersey and the New York metro area since 2021, with 24/7 emergency response. Their crews handle water damage restoration, flood damage, burst pipe cleanup, basement flooding, sewage cleanup, fire and smoke damage, mold remediation, storm damage, and commercial restoration across the region. They are a licensed NJ Home Improvement Contractor and carry insurance on every job.
Video Transcript
You woke up to a soaking wet ceiling — and the water came from the unit above you. Here’s exactly who pays for that damage. In a condo, two separate insurance policies are always in play: the building association’s master policy and your personal HO-6 policy. The master policy covers the building’s structure — roof, shared pipes, hallways, and common areas. Your HOA dues fund this one. Your HO-6 covers your unit’s interior — your flooring, personal belongings, improvements you’ve made, and liability inside your space. The boundary between both policies is set by your master deed — a legal document most condo owners have never actually read. Most buildings use ‘bare walls in’ or ‘all in’ coverage. Which one yours uses determines who pays for your ruined floors. If your neighbor was negligent — left a tub running or ignored a leak — their HO-6 liability coverage is typically first in line. If a shared building pipe failed, the association’s master policy steps in. Knowing the source of the leak changes everything. Before you file anything, pull your master deed and document all the damage with photos. Your insurer will need both. Condo water damage is complicated — but help is one call away. Call The Restoration Group at (855) 650-7422 for a free estimate.