Who pays for mould in a rental property?

In the UK, landlords are typically responsible where mould stems from property disrepair or structural issues (e.g. penetrating damp, plumbing leaks, failed ventilation, or damp‑proof course problems). Tenants should report issues promptly.

If mould is primarily caused by tenant behaviour (e.g. poor ventilation or inadequate heating leading to condensation), the tenant may be responsible—but in practice landlords often still incur cleaning costs and disruption.

• Early warning reduces remediation cost
• Alerts support timely intervention
• Historical data helps show what happened
• Useful for managing agent workflows
• Supports maintenance planning and prioritisation

Letting agents and liability

A letting agent can be involved, but liability depends on what’s in the contract and who had responsibility/control. The default legal duty to keep a property safe and fit for habitation sits with the landlord, but a managing agent may share liability if they accepted responsibility to organise repairs/inspections and failed to act when notified.

Mould Sense helps in the background by identifying risk early and prompting action sooner—often before costs are generated. This can reduce disputes and support evidence‑based decision making.

Note: This is general information, not legal advice. Always check your tenancy agreement and (if applicable) your managing agent contract.