Condensation in a rented home: who is responsible?

Direct answer

It depends on the cause. Landlords often blame condensation on the tenant, but if it is driven by a fault they should fix, such as poor ventilation, no extractor fans, cold bridging, or inadequate heating, then it is their responsibility. If it is purely from everyday living and the home is sound and well-ventilated, you can reduce it. Report it in writing so the cause can be investigated.

Condensation is one of the most common causes of damp and mould in rented properties, but it is also one of the most disputed. Landlords often blame tenants for condensation, while the real cause is sometimes a structural or heating problem the landlord should fix. Here is how condensation works, when the landlord is responsible, and what you can do.

Key facts

• The 2024 to 2025 English Housing Survey found serious condensation (3% of homes) was more common than penetrating damp (2%) or rising damp (1%). English Housing Survey 2024-25, GOV.UK
• The Housing Ombudsman's 2021 report "Spotlight on damp and mould: it's not lifestyle" called on landlords to stop automatically blaming tenants' lifestyle for damp and mould. Housing Ombudsman, Spotlight on damp and mould

What causes condensation?

Condensation happens when warm, moist air meets a cold surface. The moisture in the air turns back into water droplets, on windows, walls, or around window frames. If this happens repeatedly and the moisture cannot escape or dry out, it leads to damp and eventually mould.

Common sources of moisture in a home include cooking, showering, drying clothes indoors, and simply breathing. Some level of condensation is normal in any home.

When is condensation the tenant's fault?

Condensation can be made worse by how people live in a property. Actions that increase moisture and reduce ventilation, such as blocking air vents, not opening windows, drying large amounts of washing indoors without ventilation, or not using extractor fans, can contribute to condensation problems.

If a tenant's lifestyle is genuinely the sole cause of condensation and mould, the landlord may argue they are not responsible for the damage. However, this is a difficult argument for landlords to sustain in practice, because most homes need adequate ventilation and heating for condensation to be manageable.

When is condensation the landlord's responsibility?

Condensation becomes the landlord's problem when:

• The heating system is inadequate or broken. If you cannot warm the property properly, cold surfaces will always cause condensation. The landlord is legally required to maintain the heating system.
• Ventilation is inadequate. Building regulations require adequate ventilation in kitchens and bathrooms. If extractor fans are broken or vents are blocked by structural features, the landlord may be responsible.
• The property has poor insulation or draughts. Cold external walls are more prone to condensation. If the property has structural problems, poor insulation, single glazing in an extreme state of disrepair, or draughts from gaps in the structure, the landlord may be responsible for addressing these.
• The property is simply too cold to heat. Some properties are structurally unsuitable for habitation, the heating system cannot overcome the cold surfaces. This can amount to a fitness for habitation issue under the Homes (Fitness for Human Habitation) Act 2018.

How can you tell the difference between condensation damp and rising/penetrating damp?

Condensation damp usually appears in corners, on cold walls, around window frames, and in poorly ventilated rooms like bathrooms and kitchens. It is worst in cold weather.

Rising damp comes up from the ground and usually appears near floor level, with tide marks on the wall.

Penetrating damp comes through the building fabric, from a leaking roof, broken guttering, or cracked external walls. It often appears as patches that are worse after rain.

Both rising and penetrating damp are the landlord's responsibility. Condensation damp may be disputed, but if the property lacks the heating or ventilation needed to manage moisture, the landlord has a case to answer.

What should you do if your home has condensation and mould?

• Ventilate where you can, open windows, use extractor fans, leave small gaps under interior doors
• Wipe down condensation from windows and walls when you see it
• Report the problem to your landlord in writing, explaining where the mould is and how bad it is
• Ask your landlord to inspect and address any inadequate heating or ventilation
• If mould is serious and your landlord does not act, contact environmental health

Can you claim compensation for condensation-related mould?

If the condensation problem is partly or wholly caused by the landlord's failure to provide adequate heating or ventilation, you may have a disrepair claim. This includes health effects from mould, damage to belongings, and the general inconvenience of living with the problem.

When should I contact Support for Tenants?

If you have mould caused by condensation and your landlord blames you rather than addressing the underlying problem with heating or ventilation, we may be able to help. We handle housing disrepair claims for private renters on a no-win, no-fee basis.

Call us on 0800 030 4669. No upfront cost. You only pay if you win, and the fee comes out of the compensation, not your pocket. If you don't win, you pay nothing.

Sources

• Landlord and Tenant Act 1985, Section 11 (legislation.gov.uk)
• Homes (Fitness for Human Habitation) Act 2018 (legislation.gov.uk)
• Understanding and addressing the health risks of damp and mould in the home (GOV.UK)
• English Housing Survey (GOV.UK)