

Damp & Mould Advice for Tenants
Damp and mould are common concerns in rented properties and can be frustrating for tenants to deal with. Understanding what causes damp, who is responsible, and what steps to take can help prevent issues from escalating unnecessarily.
This page provides clear, impartial guidance for tenants experiencing damp or mould, explaining the most common causes and when a landlord should arrange a professional damp survey.
Common Causes of Damp & Mould in Rented Homes
Damp and mould can develop for several reasons. The most common causes in rented properties include condensation due to poor ventilation, everyday moisture from cooking or bathing, and maintenance issues such as leaking gutters or defective external finishes.
In many cases, what appears to be damp is related to airflow and moisture management rather than a structural defect.
Condensation Is Often the Main Issue
Condensation occurs when warm, moisture-laden air meets colder surfaces, such as windows or external walls. This can lead to mould growth, water droplets, and damp-looking patches.
Condensation is influenced by heating patterns, ventilation, and how moisture is managed within the home. It is frequently mistaken for more serious forms of damp.
Who Is Responsible for Damp in a Rented Property?
Responsibility for damp issues depends on the cause. Landlords are generally responsible for structural defects, external maintenance, and ensuring the property is fit for habitation.
Tenants are usually responsible for managing everyday condensation through appropriate ventilation, heating, and use of extractor fans.
When the cause is unclear, a professional damp assessment arranged by the landlord can help determine responsibility fairly.
What Tenants Should Do If They Notice Damp or Mould
If you notice damp or mould in your rented home:
• Report the issue to your landlord or letting agent as soon as possible
• Provide clear details and photographs where appropriate
• Use ventilation and heating consistently
• Avoid blocking air vents or extractor fans
• Keep a record of communication
These steps help ensure concerns are addressed properly and fairly.
When a Damp Survey May Be Needed
If damp persists despite reasonable ventilation and maintenance, the underlying cause may not be obvious. In these situations, a landlord may choose to arrange an independent damp survey to identify whether the issue is condensation-related or linked to a building defect.
A proper assessment helps prevent unnecessary work and ensures the correct solution is applied.
Health Considerations
Prolonged exposure to damp and mould can be uncomfortable and may affect indoor air quality. Addressing moisture issues early helps maintain a healthier living environment and prevents deterioration of the property.
Understanding the cause is essential to resolving the issue effectively.
Important Note for Tenants
Dampline works directly with property owners, landlords, and professionals to carry out damp surveys and assessments. We do not undertake inspection work on behalf of tenants without landlord instruction.
This page is provided to help tenants understand damp issues and communicate effectively with landlords or managing agents.
Concerned About Damp or Mould in Your Rented Home?
If the cause of damp is unclear, your landlord or letting agent may wish to arrange an independent damp survey to identify the issue properly and decide on the correct next steps.