Mould & Damp in a Rental
Who Is Responsible — Malaysia

This guide is for general information only and does not constitute legal advice. For complex or contested disputes, consult a Malaysian-qualified solicitor.

No Residential Tenancy Act — the contractual framework

Malaysia does not have a Residential Tenancy Act that automatically imposes repair duties on landlords. Mould and damp responsibility is determined by:

• The tenancy agreement — the primary document. A well-drafted repair clause specifying who is responsible for structural defects vs day-to-day maintenance governs the dispute.
• Common law principles — the implied duty to provide premises in a fit-for-habitation condition at the start of the tenancy, and the tenant’s duty to use the property in a tenant-like manner (applied in Malaysian courts following Warren v Keen [1954] principles).
• Contracts Act 1950 — ss. 74–76 provide the measure of damages for breach of the repair duty.

See also our full landlord vs tenant repair responsibility guide for the broader framework.

Cause-based responsibility table

The key question is always: what caused the mould or damp? Malaysian courts and the Tribunal for Consumer Claims (TTPM) assess liability based on cause, not simply on where the mould appears:

Structural damp: the landlord’s duty

At common law, a landlord has an implied obligation to hand over the property in a fit-for-habitation condition at the start of the tenancy — and to maintain structural elements throughout the term. Structural damp arises from defects in the building fabric, not tenant behaviour:

• Roof leaks. If rainwater penetrates through a defective roof or parapet and causes ceiling or wall damp, this is entirely the landlord’s responsibility to rectify. See our roof repair cost guide for typical Klang Valley costs.
• Rising damp. Moisture wicking up from the ground through a slab or wall with failed damp-proof course is a structural issue predating the tenancy.
• Failed waterproofing. If the bathroom floor membrane has failed and is allowing water into the slab — causing damp in a wall or ceiling below — this is a structural capital repair. See our ceiling leak repair guide.
• Concealed pipe leaks. A pinhole leak in a concealed copper pipe inside a wall will cause damp that looks superficially like condensation but has a distinct plumbing cause. An infrared moisture scan or plumber’s pressure test can confirm this.

In a strata building (condo or serviced apartment), the Joint Management Body (JMB) or Management Corporation (MC) is responsible for the external building envelope and common-property roof. If the leak originates from a common area or the roof, the claim is against the management body, not the landlord. See our JMB not doing repairs guide.

Condensation mould: the tenant’s duty

Condensation mould is the most common cause of mould disputes in Malaysian rentals — and it is almost always the tenant’s responsibility. It occurs when warm, humid indoor air meets a cold surface (wall, window, ceiling near aircon). In Malaysia’s tropical climate, condensation is especially common in:

• Bathrooms without adequate exhaust ventilation.
• Bedrooms with aircon running 24 hours at very low temperatures causing the outer wall to stay cold.
• Kitchens where steam from cooking is not extracted by a hood.
• Closed-up units where the tenant rarely opens windows and humidity accumulates.

Condensation mould is a tenant-side issue because it arises from how the tenant uses and ventilates the property. Tenants have a duty to:

• Ventilate rooms by opening windows when possible or using exhaust fans.
• Wipe down condensation on window frames and wall surfaces regularly.
• Treat surface mould on tiles and grout promptly with a mould-removing spray.
• Report persistent mould that they cannot treat themselves.

Grey areas: mixed-cause and long-standing damp

Many real-world cases involve mixed causes that make it difficult to apportion responsibility cleanly:

• Long-standing damp worsened by tenant behaviour. If a minor structural seepage went unaddressed for years before the current tenancy and the tenant’s failure to ventilate amplified the mould growth, responsibility may be shared.
• Damp caused by tenant-damaged waterproofing. If the tenant’s renovation work (e.g., hacking without consent) damaged the bathroom waterproofing, the subsequent damp is the tenant’s cost.
• Building design deficiency. Some Malaysian buildings — especially older high-rises and 1980s–1990s terrace houses — have design flaws (no cavity walls, inadequate roof overhang) that cause chronic damp. If the deficiency predates the tenancy and is known to the landlord, the landlord bears responsibility for the structural fix even if condensation contributes.

In grey-area cases, a professional building inspection report identifying the dominant cause is essential for any Tribunal or court proceeding.

Health, habitability and your legal rights

Severe mould affecting habitability may engage the Housing and Local Government Ministry (KPKT) or local council enforcement powers under the Street, Drainage and Building Act 1974 if a property is rendered unfit for occupation. This is an extreme escalation path, but it exists for cases where structural damp makes a property genuinely uninhabitable and the landlord refuses to act.

From a health perspective, the Ministry of Health Malaysia (KKM) has noted that mould exposure — particularly Aspergillus and Cladosporium species common in tropical environments — can cause respiratory and allergic conditions. This is relevant context when assessing habitability, but health claims require medical evidence and are separate from tenancy law claims.

How to identify the cause of mould or damp

A damp / moisture meter survey by a building inspector or waterproofing contractor costs approximately RM200–RM500 and provides an objective written assessment that is useful at the Tribunal.

Resolving a mould and damp dispute

• Step 1: Put the complaint in writing. Email or WhatsApp the other party with a clear description, photos, location and when the damp appeared. Retain all records.
• Step 2: Get a professional assessment. A building inspector, waterproofing contractor or plumber’s written report identifying the cause is the most powerful document in any Tribunal claim.
• Step 3: Allow reasonable time to act. Give the responsible party 7–14 days to engage a contractor. For severe or habitability-affecting damp, a shorter timeline is reasonable.
• Step 4: Send a letter of demand. If unresolved, send a formal letter of demand citing the repair clause, the professional report, and a final deadline before Tribunal filing.

Tribunal for Consumer Claims (TTPM)

Either landlord or tenant can file a claim at the Tribunal for Consumer Claims (TTPM) under the Consumer Protection Act 1999 for disputes up to RM50,000. The process is straightforward: filing fee RM5–RM10, no lawyer required, hearing usually within 60 days. Prepare: the tenancy agreement, written repair requests, professional assessment report, photos, and receipts for remediation costs already incurred.

For higher-value claims or where the Consumer Protection Act does not apply (e.g., commercial tenancies), the Magistrates’ Court handles claims up to RM100,000.

Mould prevention checklist for tenants and landlords

Tips for landlords on mould and damp

• Inspect and repair the roof, external walls and all waterproofing before every new tenancy — discovering a structural defect after the tenant moves in is expensive and legally complicated.
• Include a clear repair clause in the tenancy agreement that distinguishes structural defects (landlord) from day-to-day maintenance (tenant).
• Ensure all bathrooms have working exhaust fans and all kitchens have a functioning extraction hood before handover.
• Respond to mould complaints promptly and in writing. Delay increases the scope of the damage and exposes you to a larger Tribunal award.

Tips for tenants on mould and damp

• Document the condition of every wall and ceiling on move-in day with date-stamped photos.
• Report any damp or mould to the landlord in writing as soon as you notice it — do not wait. Your obligation is to report promptly; the landlord’s obligation is to assess and repair.
• Keep receipts for any mould treatment products you buy or professional cleaning services you engage — these are recoverable at the Tribunal if the mould was caused by a structural defect.
• If damp is making the property unliveable and the landlord refuses to act, seek legal advice before withholding rent. Unilateral rent withholding is risky and can expose you to a rent-arrears claim.

Sources & official references

• Contracts Act 1950 (Malaysia) — ss. 74–76 (damages for breach of contractual duty).
• Consumer Protection Act 1999 (Malaysia) — Tribunal for Consumer Claims jurisdiction.
• Street, Drainage and Building Act 1974 (Malaysia) — s. 83 (unfit for human habitation enforcement).
• Strata Management Act 2013 (Malaysia) — duties of JMB/MC for common property and building envelope maintenance.
• Common-law principle of “tenant-like manner” — Warren v Keen [1954] 1 QB 15 (applied in Malaysian courts).
• Ministry of Health Malaysia (KKM) — guidance on indoor air quality and mould health risks.
• Tribunal for Consumer Claims Malaysia (TTPM) — www.kpdnhep.gov.my.