Damp and Mould: The Hidden Health Risks Every Homeowner Should Know

When we think of damp and mould, we often picture unsightly patches on walls or a musty smell in the air. But beneath the surface, these issues can pose serious risks—not just to buildings, but to the people living inside them.

As a RICS surveyor, I’ve seen firsthand how overlooked moisture problems can escalate into health hazards. This blog explores the latest government guidance on the health impacts of damp and mould, and why urgent action is essential.

The Health Risks: More Than Just a Stain.

Damp and mould primarily affect the airways and lungs, triggering or worsening conditions such as:

• Asthma and allergic rhinitis

• Bronchitis and chronic obstructive pulmonary disease (COPD)

• Fungal infections like aspergillosis

In severe cases, prolonged exposure can be fatal. The tragic death of Awaab Ishak, a two-year-old boy who died from a respiratory condition caused by mould in a poorly ventilated home, underscores the urgency of addressing these issues.

But the impact isn’t limited to physical health. Damp and mould can also affect mental wellbeing, contributing to:

• Anxiety about health and living conditions

• Social isolation due to embarrassment or discomfort

• Stress from property damage and slow repair responses

  
  

Who’s Most at Risk?

While everyone is vulnerable, certain groups face greater harm:

• Children and older adults

• People with pre-existing health conditions (e.g. asthma, heart disease)

• Individuals with weakened immune systems (e.g. cancer patients, transplant recipients)

• Pregnant women and new mothers

• Tenants with mobility issues or mental health conditions

  These individuals may suffer more severe symptoms and may be less able to report or manage the problem themselves.

  
  

What Landlords and Surveyors Must Do

Government guidance is clear: medical evidence is not required to act. If damp and mould are present, especially in homes with vulnerable occupants, landlords must:

• Respond promptly and sensitively

• Identify and tackle the root cause—not just remove surface mould

• Document and photograph affected areas

• Reinspect after remedial work to ensure the issue hasn’t returned

As surveyors, we play a key role in identifying risks early and advising on appropriate interventions. Our reports should reflect not just the structural condition, but the potential health implications.

Final Thoughts

Damp and mould are more than maintenance issues—they’re matters of public health. Whether you’re a landlord, tenant, or property professional, understanding the risks and acting swiftly can prevent serious harm.

If you’re concerned about damp or mould in your property, or need a professional inspection, get in touch. At Prospect Building Surveyors, we combine technical expertise with a duty of care—because every home should be safe, warm, and healthy.