A landlord’s duty to mitigate damages

The Renters’ Rights Act 2026 will be in full effect as of 1 May, which means that the landscape for tenancies has changed from fixed terms to rolling periodic contracts. But there is one common issue landlords tend to deal with, which is the tenant who stops paying rent and falls off the face of the earth before their notice period ends. As much as you would want to sit back and let the tenant’s debt grow, you need to keep in mind your duty to mitigate damages as a landlord. 

Having a detailed understanding of your ‘duty to mitigate’ means that you’ll have a better chance of a successful court claim rather than having to endure an expensive legal loss. Here, we’ll look at the difference between rent and damages. 

What is the duty to mitigate?

A landlord’s duty to mitigate is a common law principle that states if a contract is breached, such as the landlord abandoning the property, the landlord (injured party) will need to take reasonable steps to prevent as much financial loss as possible. In other words, you are not legally able to allow the rent loss to increase over time if you have the power to stop it. 

If the court finds out that you were unable to mitigate your financial losses, it may reduce the amount of compensation you receive. In practical terms, if the tenant leaves and it takes you 8 months to find a new tenant, but the court feels that you could have found a replacement in 4 months, you may only be awarded 4 months’ worth of rental loss. 

Rent vs. damages

There is a distinct difference between claiming for debt (rent) and for damages. Let’s take a look at this in more detail. 

The action for debt (rent)

If the tenancy agreement is still in place (the tenant hasn’t provided you with a valid 2-month notice) and you haven’t accepted their surrender of the property, you’ll technically be claiming a debt. 

Usually, the landlord’s duty to mitigate does not apply to an action for debt, and the court has stated that a landlord isn’t forced to terminate a lease just so that they can find a new tenant. However, with the abolition of fixed terms in 2026, tenancies are more fluid, so if a tenant moves out, judges will be looking more and more at whether or not you’re using the court system properly. If you refuse to find a new tenant just to be able to keep the old one, a judge may view this as an unreasonable use of the legal system. 

The action for damages

From the moment you take the keys back and change the locks (if necessary), you’re no longer claiming for rent but instead for damages for the breach of contract because the tenancy is legally over from that point onwards. 

Now, the landlord’s obligation/duty to mitigate damages is fully active, and you’ll need to prove to the court that you did everything in your power to re-let the property as quickly as possible. 

Your duty to mitigate damages checklist

Having an empty property is the last thing you want as a landlord, and so when a tenant abandons your property, you need to be able to prove to the court that you’re taking reasonable steps to manage the problem. Here’s how: 

• Immediate re-advertising: Make sure that you advertise your property on relevant platforms immediately. 
• Market-realistic rent: You should not be advertising your property at a much higher rate in order to make up for the rent you’ve lost. Make sure your rental price is realistic and in line with the rental market. 
• Instructing agents: If you’re using an agent, make sure you give your agent written instructions to prioritise finding a new tenant. 
• Maintaining lettable condition: Make sure that your property is clean and functional so that you can re-let the property as soon as possible. 
• The viewing log: Keep a record of every enquiry and viewing you have, including all legitimate reasons why you may have rejected someone, for example, a failed credit check. 

Periodic tenancies

As you may already be aware, all tenants need to give two months’ notice before they’re able to leave the property and end the tenancy agreement. So, if a tenant abandons your rental property without notice, your damages will be limited to that two-month notice period, including any costs incurred. Courts are now less likely to tolerate landlords who keep their property empty. A landlord’s duty to mitigate is considered extremely important because the loss is more clearly defined. 

Common pitfalls to avoid

Here are a few things that you should keep in mind to avoid when dealing with a tenant who has abandoned your property: 

• The vengeance trap: You may have the desire to leave the property vacant so as to increase the amount of money the tenant owes. This will backfire in court, however, so always try your best to get your property filled again. 
• Renovation delay: Don’t decide to waste time with renovations in order to claim more lost rent from the old tenant. 
• The “no benefits” rule: You won’t be able to filter out a large demographic, such as tenants on benefits, and claim that you can’t find suitable tenants to rent to. The new act has made it illegal to discriminate against tenants on benefits. 

Proving your case 

With the launch of the Private Rented Sector Landlord Ombudsman in 2026, many issues that arise will be dealt with outside of the traditional court system. The Ombudsman will act as a mediator between landlord and tenant, aiming to look for a solution to the dispute without having to use the court. 

So, if you are pursuing a tenant for unpaid rent or damages after abandoning the property, the ombudsman will look to see what you have done to minimise the financial impact this will have. It is, therefore, in your best interest to keep a file with ads, agent logs and images to prove everything you’ve done to mitigate risk as much as possible.  

Document everything

The landlord’s duty to mitigate damages is about being able to prove that you are a professional landlord and business owner. By taking immediate steps to find a replacement tenant, you’ll: 

1. Recover your cash flow faster.
2. Maintain a strong legal position for any remaining gap in rent.
3. Protect your reputation with the new PRS database and ombudsman.

Are you looking for landlord insurance to help protect your rental property? Get in touch with our team of specialists at CIA Landlords to get your tailored quote on 01788 818 670. Also, be sure to visit our advice centre for more information on how to manage your rental property.