Does My Guarantee End When a Replacement Tenant Moves Into My Child’s Student House?
Your daughter moved out of that student house eighteen months ago. Someone else took over her room, your name’s still on a guarantee form from years back, and a letter just arrived chasing unpaid rent. You’ve seen something online about a “6-month rule” for guarantors. It’s real — but whether it actually applies to you depends on one specific legal distinction almost nothing written for renters explains clearly.
Quick answer: the 6-month rule is a genuine law, a Section 17 notice under the Landlord and Tenant (Covenants) Act 1995, and per the Act itself, it isn’t restricted to commercial property — it applies to any qualifying tenancy. But it only bites in one specific scenario: where the departing tenant’s interest was formally assigned to the replacement, and the guarantee was set up to continue covering that assignee. If what actually happened was a surrender — the old tenancy ending and a fresh one starting for the new occupant — your guarantee ended at that point regardless of any 6-month notice, because there was nothing left for a notice to protect.
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Assignment versus surrender: the distinction that decides everything
These are two legally different events, and almost every explanation of the 6-month rule online skips straight past this because it’s written for commercial landlords, where assignment is the normal way a lease changes hands. In residential and student housing, it’s the other way around — surrender is far more typical than assignment, precisely because landlords generally prefer to start clean with a new signed agreement rather than manage an ongoing chain of assignees and guarantors.
If your daughter’s tenancy was formally assigned to the replacement student, and your guarantee was written to continue covering whoever holds the tenancy afterward, then Section 17 genuinely applies: the landlord has to notify you within 6 months of each specific unpaid charge, or they permanently lose the right to chase that particular charge from you. If instead the landlord ended the old tenancy and started a brand new one with the replacement student — a surrender — your guarantee ended along with the old tenancy, full stop, and the 6-month notice rule was never relevant to your situation in the first place.
Surrender doesn’t require a signed release — conduct alone can do it
Here’s a genuine correction to how this is often explained: a surrender doesn’t have to be a written document. Per Shelter England’s legal guidance, a tenancy can be surrendered “by operation of law” through the unequivocal conduct of both landlord and tenant, and Shelter specifically notes that granting a new tenancy for the same property can itself amount to a surrender of the old one. In plain terms: if the landlord actually signed a fresh tenancy agreement with the replacement student, that act alone may have ended the original tenancy and released the original guarantor, even without a formal written release ever being signed.
This cuts both ways for a worried guarantor. A written Deed of Release is still the clearest, easiest-to-prove evidence that you’re off the hook. But the absence of one doesn’t automatically mean you’re still liable — if the landlord’s actual conduct (a new signed tenancy with the replacement, rent collected directly from them under new terms) was clearly inconsistent with the old tenancy continuing, that conduct can have ended it regardless of paperwork. It’s a genuinely harder thing to prove without a document, which is exactly why getting it in writing at the time remains the sensible move — but its absence isn’t the end of the story.
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Being honest about where this gets genuinely uncertain
Every piece of published legal commentary on the assignment/surrender distinction and Section 17 is written for commercial landlords and solicitors — there’s no dedicated guidance addressing exactly how this plays out in an ordinary student house share. The legal principles above are well-established; applying them to a specific real situation depends entirely on what actually happened at the time your daughter’s replacement moved in, and that’s genuinely worth a proper read of your specific paperwork (or a solicitor’s opinion) rather than assuming either outcome from a general explanation like this one.
A worked example
Picture a five-bedroom student house where each room is £550 a month. One housemate leaves after the first term. Scenario one: the landlord has the outgoing tenant’s guarantee continue under a formal assignment to the replacement. Six months pass with no notice served about a specific £550 unpaid charge — that particular charge can never be recovered from the original guarantor, though later unpaid charges, properly notified within their own 6-month windows, still could be. Scenario two: instead, the landlord simply ends the old tenancy and signs a brand new agreement directly with the replacement student. That’s a surrender. The original guarantor’s liability ended the moment that happened, and nothing about a 6-month notice period comes into it at all — there was no assignment for Section 17 to attach to.
The separate 6-year rule for old debts generally
Distinct from the Section 17 notice question, there’s a general time limit on how long any contract debt can be pursued at all. Under the Limitation Act 1980, ordinary contract debts, including rent arrears claims against a guarantor, generally have to be brought within 6 years of the debt arising, or 12 years if the guarantee was signed as a deed. This applies regardless of whether your situation involved an assignment or a surrender.
What to actually check if a letter like this arrives
Find out what actually happened when the replacement moved in: was the existing tenancy formally assigned with your guarantee continuing, or was a brand new tenancy signed directly with the replacement? Look for a Deed of Release, a fresh tenancy agreement in the replacement’s name, or any correspondence describing the changeover. If it was a surrender — express or implied through the landlord’s conduct — point the landlord to that. If it was a genuine assignment with continuing liability, check whether a Section 17 notice was actually served within 6 months of each specific charge you’re now being asked to pay.
FAQ
Isn’t there a 6-month rule that protects guarantors automatically?
There is a genuine 6-month rule, called a Section 17 notice, but it only applies if the departure was handled as a formal assignment with your guarantee continuing. If it was handled as a surrender instead, the 6-month rule doesn’t apply because your guarantee already ended outright.
What’s the actual difference between assignment and surrender?
Assignment transfers the existing tenancy to someone else, and your guarantee can continue attached to it. Surrender ends the existing tenancy completely, and a fresh one starts for whoever’s living there now — which ends your guarantee at the same time.
Does surrender have to be in writing to count?
No. A tenancy can be surrendered by conduct alone — called surrender by operation of law — if the landlord’s and tenants’ actions are clearly incompatible with the old tenancy continuing, such as the landlord granting a fresh tenancy to the replacement. Written proof is far easier to point to later, but conduct alone can legally do it too.
If a Section 17 notice was never served, am I definitely off the hook?
Only for the specific unpaid charges that fall outside the 6-month window, and only if your situation was actually an assignment with continuing liability in the first place. If it was a surrender, the notice requirement never applied to you at all, because your guarantee ended when the surrender happened.
How long can a landlord wait before chasing any old guarantor debt generally?
Separately from the 6-month notice rule, ordinary contract debts under the Limitation Act 1980 generally have to be pursued within 6 years of the debt arising, or 12 years if the guarantee was signed as a deed.
This article is for general education, not legal advice. DebtShift is an educational publisher, not a law firm. Whether your specific situation was an assignment or a surrender depends on facts a solicitor should review. If you’re dealing with a demand as a guarantor, StepChange offers free, confidential debt advice.
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Related reading: Student Rent Guarantors: New Death Liability Rule From May 2026 and Guarantor Loan Default UK: What Happens
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Written by Hamid Ali, MSc Accounting & Finance, ACCA (in progress), Founder of DebtShift · Updated July 2026