Ceiling leaks between units: who is responsible

If water is coming through your ceiling, the starting point in a strata development is a legal presumption. BCA's guide on water seepage says that where there is dampness, moisture or water penetration on the interior ceiling of a unit, it is presumed, unless evidence shows otherwise, that the defect is in the unit immediately above.

BCA describes inter-floor water seepage as one of the most common issues in strata-titled developments. The usual picture is water passing through the floor slab of the upper unit to the ceiling of the unit below.

When the dispute goes to the Strata Titles Boards (STB), the STB's own FAQ lists disputes on inter-floor water leakage under Section 101(1)(a) and/or Section 101(8). BCA's dispute resolution guide likewise says an owner with water seepage from above can file an application with the STB under Section 101(8) of the Building Maintenance and Strata Management Act (BMSMA). The STB refers to the current law as the Building (Strata Management) Act.

A presumption is a starting point, not a final finding. It decides who has to show what:

• If you live below, the visible dampness on your ceiling is what brings the presumption into play. You do not have to trace the exact defect upstairs before raising it.
• If you live above, you are presumed to be the source unless you can prove otherwise. BCA's guide on stakeholders' roles puts this on the upper floor unit owner or occupier, so tenants are covered by the same expectation.
• Either way, BCA expects the two units to investigate together. The presumption is not a reason for the upper unit to refuse access or for the lower unit to skip the investigation.

The presumption can be displaced by evidence. A leak that turns out to come from a shared pipe, an external wall or the roof is a different matter, covered below.

BCA's starting rule is simple. The management corporation (MCST) is responsible for maintaining common property and fixing defects there. Each owner is responsible for keeping their own unit in good condition, including defects inside the unit's boundaries.

BCA's water seepage guide applies this to common situations:

• Pipes: a leak in a pipe serving two or more units, where the pipe is common property, is for the MCST to repair. A leak in a pipe serving only one unit is for that unit's owner.
• External walls: where the wall is common property, the MCST is responsible for repairing the leak.
• Roofs: the owner of the uppermost unit should check whether the roof is common property, especially in cluster housing and shophouses. If it is, the MCST manages and maintains it.
• Windows: the owner maintains louvres, casement windows, sliding windows and windows with movable parts. Where the window frame is common property, the MCST should maintain the frame.

BCA's guide on common property says structural elements such as slabs, beams, columns and walls are common property, as are pipes used across two or more units. It also says that, generally, everything inside a unit is the owner's property unless defined as common property.

To see exactly where your unit ends, BCA points to the strata title plan, a survey plan registered with the Singapore Land Authority. Any owner can get a copy from the MCST or from SLA.

The MCST is not a judge between neighbours, but it does have a part to play.

• Joint inspection. BCA suggests that the affected parties and the MCST or managing agent carry out a joint inspection to find the cause and proceed with any repairs needed.
• Leaks from common areas. As a good practice, where dampness or water penetration comes from a common area, BCA says the MCST should investigate first. If the source is common property, maintaining it is the MCST's duty.
• When neighbours cannot agree. BCA's dispute guide says the owners can ask the MCST to intervene. The MCST can write to the upper unit owner requesting a joint investigation, help both sides settle the matter, and tell them they may need to apply to the STB.

BCA itself does not settle these disputes. Its dispute guide states that neither the Commissioner of Buildings nor BCA is empowered to resolve disputes under law, and BCA's page on common issues says it cannot intervene in or advise on private disputes.

Official guidance leaves the money largely to the people involved:

• If needed, the affected parties can engage an independent consultant or licensed plumber to find the cause, and work together to fix it.
• For inter-floor seepage, BCA says the upper and lower unit owners should decide on their respective share of the repair costs, and that both should resolve the cost and methods of repair privately.
• Damage and compensation for losses suffered from water seepage are to be settled between the owner and the parties concerned. BCA notes these are private issues not addressed under the BMSMA.
• If the source is inside a unit, BCA says it is that owner's responsibility to carry out the repairs. If it is common property, the MCST's duty to maintain applies.

No official source we checked sets a fixed rule on who pays for investigation tests. Agree it in writing with your neighbour, or with the MCST where common property may be involved, before the work starts.

Because the presumption turns on evidence of dampness on your ceiling, and because an STB application may follow, keep a clear record from the first day. Practical suggestions:

• Dated photos and short videos of the ceiling, the stain spreading and any dripping, taken from the same spot each time.
• When you noticed it, and whether it gets worse after rain or after the unit above uses a bathroom or kitchen.
• Every message, letter and email to your neighbour and to the management office, with dates.
• Reports from any consultant or plumber, and quotations and receipts for tests and repairs.
• A copy of the strata title plan if the boundary between your unit and common property is in question.
• A note of damage to your own fittings and belongings, kept separately from the repair itself.

1. Talk to your neighbour. BCA's guides advise both owners to work together to investigate and repair the leak, and to discuss repair costs.
2. Tell the management office in writing. Ask for a joint inspection, especially if a shared pipe, external wall, roof or other common property might be involved.
3. Agree the investigation. Settle who will carry it out, when, and how the cost is split.
4. Ask the MCST to intervene if your neighbour does not respond. It can write to the upper unit requesting a joint investigation.
5. Apply to the STB if the matter still cannot be resolved.

Community mediation is not the route for this. BCA's dispute guide notes that the Community Mediation Centre does not handle cases needing expert technical knowledge, such as water seepage.

The STB is a quasi-judicial tribunal that mediates and hears disputes within strata-titled properties. BCA lists inter-floor water leakages first among the common disputes brought before it, and notes that the Board's panel includes lawyers, architects and engineers.

How a case runs, as the STB describes it:

• Application. The applicant files an application against the respondent. The STB asks applicants to email a soft copy of the form to [email protected] for checking first, and then sends payment and filing instructions.
• Who applies. Where a unit has more than one owner, the STB advises naming all owners as applicants.
• Mediation. All parties must attend the mediation sessions the Board fixes. The application fee covers two mediation sessions. Mediations are private, confidential and "without prejudice". If the dispute is resolved, the matter can end there.
• Hearing. If mediation does not resolve it, the Board gives directions to prepare for a hearing and fixes a date.
• Orders. The Board's orders are binding and can be enforced through the State Courts. BCA notes that the STB's decisions are final, with appeal to the High Court only on a question of law.

The STB cannot give legal advice. Its FAQ suggests independent legal advice if you are unsure which sections apply. The STB also offers a pre-filing assessment tool on its proceedings page, and current fees are listed on its website.

This guide is about private strata developments with an MCST. HDB publishes its own guidance on ceiling leaks. Its home care guide says flat owners are responsible for the upkeep and maintenance of their flat, covers shared responsibilities for ceiling leaks within flats, and says that for leaks from common property you should contact your Town Council rather than an MCST.