If you have ever rented a property, there is a good chance a guarantor was part of the equation — whether you were asked to provide one as a tenant, or someone asked you to act as one on their behalf. Guarantor arrangements are common in the private rented sector, particularly for younger tenants, students, and people with limited rental history, lower income, or weaker credit profiles.
But guarantor agreements are more complex than many people realise. They carry real financial risk, and they do not always hold up in the way landlords expect — or fall on guarantors as heavily as they fear. This article explains how guarantor agreements work in practice, when a landlord can enforce one, and the circumstances in which a guarantee may be challenged.
What Is A Guarantor In A Residential Tenancy?
A guarantor is a third party — usually a parent, relative, or close friend — who agrees to meet a tenant’s financial obligations under a tenancy agreement if the tenant does not do so themselves. This usually covers unpaid rent, but it may also extend to damage to the property beyond fair wear and tear, depending on the wording of the agreement.
The guarantee is usually set out in a separate deed of guarantee, though it can sometimes be included within the tenancy agreement itself. The distinction matters because some guarantees must be executed as a deed, particularly where the tenancy has already been entered into before the guarantee is signed.
Landlords often ask for guarantors where:
- The tenant has no previous rental history
- The tenant’s income does not meet the landlord’s affordability threshold
- The tenant is a student or has irregular income
- The tenant has a poor or limited credit history
- The tenant receives benefits and there is a shortfall between the rent and benefit entitlement
In London in particular, where average private rents remain the highest in England, guarantors are increasingly common even for working tenants whose income levels fall just short of the required affordability multiplier.
How Does A Guarantee Agreement Actually Work?
A properly drafted guarantee creates a legally binding obligation on the guarantor to pay if the tenant defaults. However, the exact nature of that obligation depends on the wording of the document.
A true guarantee is a secondary obligation. This means the guarantor’s liability depends on the tenant’s liability. If the tenant is not legally liable for the sum claimed, the guarantor will usually have a defence too.
An indemnity is broader. It can make the guarantor directly liable for the landlord’s loss, and landlords often prefer this wording because it gives them more flexibility when recovering unpaid rent or other sums.
Many modern landlord documents include both guarantee and indemnity wording. That is why anyone being asked to act as a guarantor should read the document carefully — ideally with advice from a law firm in London — before signing.
What Can A Landlord Claim From A Guarantor?
The scope of the guarantor’s liability depends on what the guarantee says. In a well-drafted agreement, a landlord may be able to claim:
- Rent arrears built up during the tenancy
- Rent or occupation-related sums that continue after the original term, if the guarantee clearly covers that period
- The cost of repairing damage caused by the tenant beyond fair wear and tear
- Interest, where this is lawfully included
- Legal costs in some cases, where specifically provided for and recoverable
One area that often surprises both landlords and guarantors is what happens when the tenancy changes. If the tenancy is renewed, varied, or converted into a different arrangement without the guarantor’s clear consent, the guarantee may not cover the new position — especially if the guarantor’s exposure has increased.
This has become even more important since the Renters’ Rights Act 2025 reforms came into force on 1 May 2026. Most assured shorthold tenancies in England have moved into the new assured periodic tenancy structure, and guarantees need to be checked carefully to see whether they still apply and to what extent.
For landlords facing difficulties recovering rent arrears through a guarantor, our debt recovery services in London can assist in pursuing what is owed efficiently and correctly.
When Can A Guarantee Be Challenged?
Guarantor agreements are not always enforceable. There are several circumstances in which a guarantor may be able to challenge liability.
1. The Agreement Was Not Properly Put In Writing Or Signed
A guarantee must be in writing and signed by the guarantor. In some cases, it must also be executed as a deed. A deed must clearly state that it is intended to be a deed, be signed by the guarantor, and have the guarantor’s signature witnessed at the point of signing.
If these formalities were not followed, the landlord may have difficulty enforcing the guarantee. This is especially important where the guarantee was signed after the tenancy agreement had already been entered into.
2. The Tenancy Was Materially Changed Without The Guarantor’s Consent
If the landlord and tenant agree changes to the tenancy — such as a rent increase, a renewal, a change in the term, or permission for additional occupants — without involving the guarantor, the guarantor may argue that their liability does not extend to the altered agreement.
A minor change may not be enough to release a guarantor. However, where the change is material or increases the guarantor’s risk, the guarantee may no longer apply unless the guarantor agreed to it properly.
This is one reason why landlords dealing with changes to a tenancy should involve the guarantor formally, ideally through a deed of variation or a fresh guarantee where needed. Our property dispute solicitors in London regularly advise on how to structure these arrangements correctly.
3. Undue Influence Or Misrepresentation
If a guarantor was pressured into signing — by the tenant, the landlord, or anyone else involved — or was misled about the nature or extent of their obligations, they may have grounds to have the guarantee set aside.
This is especially relevant where the guarantor is vulnerable, elderly, financially dependent on the tenant, or signed without having the document properly explained to them.
Courts look closely at the circumstances surrounding the signing. If the guarantor was not given time to consider the document, was not advised to seek independent legal advice, or did not understand the level of financial risk involved, that may support a challenge.
4. The Guarantee Is Wider Than The Tenancy Agreement
A guarantor’s liability cannot exceed the tenant’s liability. If the tenant has a valid defence to the arrears or a claim against the landlord, this may reduce the amount the guarantor has to pay.
Problems also arise where a guarantee tries to cover every future extension, renewal, variation, or rent increase without clear limits. Very wide wording can be challenged, particularly if it creates an unfair or unexpected burden on the guarantor.
If a fixed-term tenancy has ended or moved into a periodic tenancy, the wording of the guarantee must be checked carefully. Some guarantees continue beyond the original term, while others do not. Many landlords assume a guarantee automatically rolls over, but this is not always correct.
Our post on tenancy types and what a move toward periodic tenancies could mean explores how this transition affects the rights and obligations of all parties.
5. The Landlord Delayed Too Long In Pursuing The Claim
Guarantors are not exposed indefinitely. Time limits may apply depending on whether the guarantee was signed as a simple contract or executed as a deed.
Delay can also create practical problems. Records may be incomplete, memories may fade, and the guarantor may lose the chance to recover money from the tenant. Landlords should act promptly once arrears arise, and guarantors should take advice as soon as a claim is made against them.
What Happens When Eviction Is Involved?
In many rent arrears situations, possession proceedings and guarantor enforcement are closely connected. A landlord may pursue possession against the tenant while also seeking payment from the guarantor.
Since 1 May 2026, landlords in England can no longer serve new Section 21 notices. In most private rented cases, landlords now need to rely on Section 8 grounds for possession, which require a legally recognised reason such as rent arrears, anti-social behaviour, or another statutory ground.
If you are a guarantor being pursued while the tenant is facing eviction, it is important to understand which ground is being relied upon and whether the rent arrears are properly calculated. Our post on strengthened Section 8 grounds for arrears, ASB, and sale or occupation sets out how the eviction process has changed.
If you are a landlord trying to recover possession and enforce against a guarantor at the same time, seeking advice from section 8 eviction solicitors will help you navigate both issues in the right order.
Advice For Guarantors: What You Should Know Before You Sign
If someone is asking you to act as a guarantor, here is what you should do before putting pen to paper:
- Read the full guarantee document carefully — not just the parts that have been highlighted for you
- Check whether your liability is unlimited or capped
- Check whether the guarantee covers rent arrears, property damage, legal costs, interest, or all of these
- Find out whether your liability continues if the tenancy becomes periodic or is renewed
- Understand whether the landlord can pursue you directly once the tenant defaults
- Ask for independent legal advice before signing
The financial exposure can be substantial. In some cases, guarantors find themselves facing claims for thousands of pounds in arrears that have built up over a long period. If you are already in that situation and believe the guarantee was improperly entered into, take legal advice urgently.
Our team can assess whether there are grounds to challenge the agreement. Separately, if you are a landlord reviewing your documentation following the changes previously discussed in our post on Section 21 abolition proposals, it is sensible to check your guarantee wording at the same time.
Disputes Involving Guarantors — Getting The Right Help
Guarantor disputes can become contentious quickly, particularly when large sums of money are involved and relationships between tenant and guarantor are strained.
Whether you are a landlord seeking to enforce a guarantee, a guarantor who believes their liability has been wrongly claimed, or a tenant caught in the middle of a dispute, the right legal advice at the right time makes a significant difference.
For disputes that end up in court, having experienced commercial litigation solicitors in London on your side ensures your case is properly prepared and presented. If the matter also involves property condition issues, rent arrears, possession proceedings, or related tenant claims, our housing disrepair solicitors and wider property team can point you in the right direction depending on the nature of the dispute.
Frequently Asked Questions
Can A Guarantor Be Pursued After The Tenancy Has Ended?
It depends on the wording of the guarantee. Some guarantees end with the original tenancy, while others extend to any later periodic tenancy or period during which the tenant remains in occupation. The document needs to be checked carefully.
What Happens If The Guarantor Dies?
The guarantor’s estate may remain liable for obligations that accrued before death. Whether any further liability continues depends on the wording of the agreement and the circumstances at the time. Legal advice should be taken if a landlord is pursuing a deceased guarantor’s estate.
Can A Landlord Chase Both The Tenant And The Guarantor At The Same Time?
Often, yes. A guarantor can usually be asked to pay the debt in addition to, or instead of, the landlord pursuing the tenant. The exact position depends on the wording of the guarantee and whether it also includes indemnity wording.
I Was Pressured Into Signing As A Guarantor. What Can I Do?
You may have grounds to challenge the agreement on the basis of undue influence, misrepresentation, or lack of proper understanding. The strength of your case will depend on the facts, the relationship between you and the tenant, and how the guarantee was presented to you.
Does A Guarantor Need To Be A UK Resident?
Not necessarily. There is no fixed rule that a guarantor must live in the UK. However, landlords often prefer UK-based guarantors because enforcement against someone overseas can be more difficult, slower, and more expensive.
Speak To Our Team
Guarantor arrangements might seem straightforward on the surface, but they can quickly become legally complex — particularly when relationships break down, circumstances change, or the documentation was not set up correctly in the first place.
Whether you are a landlord trying to recover what you are owed, a guarantor facing an unexpected claim, or a tenant trying to understand your position, Atalaw Solicitors is here to help. We are an established London law firm with over 20 years of experience, and we will give you practical, straightforward advice from the very first conversation.
Contact us today — we are ready to help you find a clear way forward.