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Strata · 7 min read

Strata plumbing: where your responsibility ends and the JMB's begins

Living in a KL condo means sharing plumbing with hundreds of neighbours. Knowing the exact handover point saves arguments, money, and one or two very awkward AGMs.

Under Malaysia's Strata Management Act 2013 (SMA 2013), the management corporation or JMB is responsible for "common property" — the parts of the building used or accessible by all owners. Inside-unit installations are typically the unit owner's responsibility. Plumbing sits awkwardly across both, and that's where most disputes start.

The short version of who owns what

As a rule of thumb in most KL strata schemes:

  • The vertical riser stack — common property, JMB's responsibility.
  • The branch tee that comes off the stack into your unit — common property up to and including the isolation valve.
  • Everything from your isolation valve inward — yours.
  • The soil and waste stack — common property. Your toilet, your washing machine drain, and the branch waste line into the stack are yours.
  • The shared sewer underground — common property. A blockage downstream of the stack base falls to the JMB; a blockage in your unit's branch is on you.

Your individual SMC's by-laws can vary this in writing. Read your strata title and the deed of mutual covenant if you're about to spend serious money.

What that means in real money

Say a leak appears in your master bathroom ceiling. The water is coming from the unit above, which has a failed PPR joint in the cold supply behind their vanity. That joint is on their side of the isolation valve — their unit, their problem, and their insurance claim. The JMB is involved only if reinstatement of common-area walls is needed.

Now flip it. A burst on the riser stack itself, between floors, soaks half a dozen units. That's the JMB's responsibility — both the repair and the reinstatement of damage to common ceilings. Your contents are still yours to claim through your own insurance, which is why a Strata Title Tenant insurance policy is one of the cheapest sensible things you'll buy this year.

Why the diagnosis matters before the argument

We get called to plenty of "the JMB said it's our problem" jobs that turn out to be the JMB's after a 20-minute investigation, and the reverse. Half of all strata plumbing disputes are really diagnosis disputes — nobody is sure where the water is coming from, so everyone defaults to "not me".

Getting a photo log and a written diagnosis before the email exchange begins changes the conversation. We provide both as standard. They aren't expensive, and they short-circuit a lot of unhappy WhatsApp threads.

Working with the building office

Before any work that involves a riser, a stack, or any access to the void above your ceiling, we file a permit-to-work with the building. Most KL JMBs require:

  • A method statement (what we'll do, how long it'll take, what's involved)
  • Public liability insurance certificate
  • Worker ID copies (yes, including the apprentice on the day)
  • Notice to affected neighbours if water needs to be cut from the riser

We keep all of this on file and submit on your behalf — it's not glamorous, but it's the kind of thing that lets the next job start on time instead of after a week of paperwork.

The single sentence to remember

If the water is on your side of the isolation valve, it's yours; if it's on the building's side of the isolation valve, it's the JMB's. Everything else is a conversation about what's on what side, which is why diagnosis-first really is the cheapest first step.