What happen next if you have mould infestation in your HDB?

  • 3 min reading time

Legal and Maintenance Advice for Managing Mould in HDB Flats

Mould growth in Housing Development Board (HDB) flats is a prevalent issue in Singapore, exacerbated by the city-state's high humidity levels. Not only does mould pose health risks, but it can also lead to significant property damage. Understanding the legal responsibilities and maintenance advice for addressing mould is crucial for HDB residents. This article provides an extensive overview of the policies, responsibilities, and effective strategies for managing mould in HDB flats.

Pico X mould eradication and prevention

Understanding Mould in HDB Flats

Mould thrives in moist environments, making HDB flats susceptible due to Singapore's climate. It typically appears as a patch of black, green, or white growths that can spread on walls, ceilings, and other surfaces. The key to managing mould is to control dampness within the flat.

Legal Framework for Mould Management

HDB's regulatory framework stipulates that maintenance of the internal areas of an HDB flat, including managing mould, falls primarily on the flat owner. However, there are exceptions where HDB may intervene, particularly when structural issues contribute to moisture penetration, such as leaking pipes or facade deterioration.

Responsibility of Flat Owners: Flat owners are generally responsible for the upkeep of their property, which includes taking measures to prevent and remove mould. This involves regular cleaning and reporting any structural defects that might contribute to mould growth.

HDB's Role: If mould growth is linked to structural defects or failures in the building exterior managed by HDB, the board may assist in remediation efforts. This includes repairs to external wall cracks or plumbing faults that are beyond the homeowner's control.

Preventative Measures for Mould

Proactive maintenance can significantly reduce the risk of mould. Residents are advised to adopt the following practices:

  • Ventilation: Ensure adequate airflow by regularly opening windows and using exhaust fans, particularly in high-moisture areas like bathrooms and kitchens.
  • Dehumidifiers: Utilize dehumidifiers to reduce indoor humidity levels.
  • Regular Inspections: Regularly check for signs of water leakage or condensation, especially around windows, pipes, and ceilings.
  • Prompt Repairs: Address leaks and dampness immediately before they lead to mould growth.

Effective Mould Remediation Techniques

Once mould appears, it is crucial to address it promptly to prevent health risks and structural damage. Here are effective techniques for mould remediation:

  • Cleaning Small Areas: For minor mould issues, use a solution of water and mild detergent. For non-porous surfaces, diluted bleach can be effective.
  • Professional Remediation: For extensive mould infestation, especially when it covers more than ten square feet, engaging professional services is recommended.
  • Addressing the Root Cause: Alongside cleaning, it is vital to fix the underlying issue that led to mould growth, such as a leak or inadequate ventilation.

Navigating Disputes and Seeking Assistance

In instances where disputes arise between flat owners and HDB or between neighbours (e.g., when mould spreads from one flat to another due to structural issues), it is important to seek a resolution through dialogue and mediation. HDB provides advisory services and can facilitate mediation sessions to resolve such disputes. Residents can also seek legal advice if the issue escalates.


Managing mould in HDB flats requires a combination of vigilant maintenance, understanding legal responsibilities, and implementing effective remediation strategies. By adhering to these guidelines, residents can ensure their homes remain healthy and free from mould-related issues. In cases of uncertainty regarding responsibilities or rights, consulting a Pico X Health Consultant can provide clarity and aid in effective mould management.

This comprehensive approach not only helps in maintaining the structural integrity and aesthetic value of HDB flats but also ensures the well-being of its occupants.


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