Slab Leak in a Condo or Townhouse: Who Pays?
How Responsibility Is Typically Divided
HOA responsibility (common elements): The main water supply line from the street to the building, shared drain and sewer lines that serve multiple units, plumbing that runs through common areas (lobbies, parking structures, shared laundry rooms), and any pipe that the CC&Rs designate as a common element. The HOA pays for repairs to these components from the association's reserve fund or master insurance policy.
Unit owner responsibility: Supply lines and drain lines that exclusively serve your unit, plumbing fixtures within your unit (faucets, toilets, water heater), and any pipe from the point where it branches off the common line to serve your unit exclusively. You pay for repairs and file claims under your individual HO-6 condo insurance policy.
The gray area: Pipes that run beneath your unit's slab but serve multiple units or that are not clearly classified in the CC&Rs. This is where disputes arise. Some CC&Rs define common elements as everything from the building exterior inward to the drywall surface, which would make under-slab pipes a common element. Others define the unit boundary as the concrete slab itself, making the pipes within the slab a unit-owner responsibility. The specific language in your CC&Rs controls the answer.
Insurance in Multi-Unit Properties
HO-6 (condo owner) policy: This covers your personal property, your unit's interior finishes (flooring, cabinets, fixtures), and improvements you made to the unit. It also includes liability coverage if a leak from your unit damages a neighbor. HO-6 policies typically cost $200 to $500 per year and have deductibles of $500 to $2,500. The HO-6 policy does not cover common element repairs, as those fall under the HOA master policy.
Loss assessment coverage: If the HOA's reserve fund or master policy does not fully cover a common-element slab leak repair, the HOA may assess individual unit owners for their share of the remaining cost. Loss assessment coverage on your HO-6 policy reimburses you for these special assessments. Standard loss assessment coverage is $1,000 to $5,000, but it can be increased for a small additional premium. This coverage is often overlooked but is valuable in older buildings with aging plumbing.
Service line endorsement: Just as with single-family homes, a service line endorsement on your HO-6 policy can cover the cost of repairing or replacing pipes that serve your unit. The endorsement costs $50 to $100 per year and covers $10,000 to $25,000 per incident. If your CC&Rs make you responsible for under-slab pipes serving your unit, this endorsement is worth adding.
Practical Steps When a Slab Leak Occurs
Notify the HOA immediately. Even if you believe the pipe is your responsibility, the HOA needs to know because the leak may affect common elements, neighboring units, or shared infrastructure. Most CC&Rs require prompt notification of any water intrusion event.
Review your CC&Rs. Read the sections on maintenance responsibilities, common elements, and unit boundaries. Look specifically for language about plumbing, pipes, and water systems. If the language is ambiguous, request a written interpretation from the HOA board or the association's attorney.
Coordinate with your neighbor. If the leak or its damage crosses unit boundaries, communicate openly with the affected neighbor. Share plumber reports, insurance adjuster findings, and repair plans. Most multi-unit slab leak disputes escalate because of poor communication rather than genuine disagreements about responsibility.
Get a written plumber assessment. Before any repair work begins, have the plumber document which pipe is leaking, whether it serves a single unit or multiple units, and where the leak is located relative to unit boundaries. This documentation is essential for determining responsibility and supporting insurance claims from all parties.
File claims with both insurers if needed. If the leak involves both common elements and unit-specific damage, file with the HOA master insurer for the common element portion and with your HO-6 insurer for the unit-specific damage. The two adjusters will coordinate to avoid double-paying for the same damage.
Read your CC&Rs before a slab leak happens so you know who is responsible for what. The HOA typically covers shared plumbing, and individual owners cover unit-specific pipes. Make sure your HO-6 policy includes loss assessment coverage and consider a service line endorsement if your CC&Rs assign pipe responsibility to you.