Nearly a third of private renters in England live in shared accommodation, yet most move in with nothing more than a group chat agreement and a vague sense of goodwill. I’ve covered the UK rental market for years, and the single most common question I get is what happens when a flatmate stops paying or wants to leave early. The answer, more often than not, is that nobody actually knows — because there’s no written agreement to fall back on. Here’s what you actually need to know.
If you’re renting with flatmates, the legal framework around shared housing is about to change significantly. The Renters’ Rights Act 2025, which received Royal Assent on 27 October 2025, introduces a phased overhaul of tenancy law in England. The first major changes take effect from 1 May 2026, and they affect everyone living in a shared private rental — whether you’re on a joint tenancy or a lodger agreement. A tenant landlord lawyer can help you understand how these changes apply to your specific situation, but the basics are straightforward enough to get your head around now.
What a roommate lease agreement actually covers
The most important thing to understand is that a roommate lease agreement isn’t a single document. It’s the combination of your tenancy agreement with the landlord and any separate agreement you make between flatmates. The tenancy agreement sets out your legal relationship with the landlord — who pays rent, when, and what happens if someone doesn’t. The flatmate agreement covers the day-to-day stuff: bills, cleaning, guests, and what happens if someone wants to move out early.
Under the new rules, all existing fixed-term and assured shorthold tenancies will automatically convert into periodic (rolling) tenancies from 1 May 2026. That means you can end your tenancy with two months’ notice at any time — but if you’re on a joint tenancy, you need all flatmates to agree, or you’ll need to find a replacement tenant the landlord approves. My advice: get a written agreement between flatmates that covers how you’ll handle someone leaving, including notice periods and finding a replacement. It saves a lot of arguments later.
Why the new rules matter for shared housing
The Renters’ Rights Act changes the balance of power in shared housing significantly. Take the ban on rental discrimination. It is now illegal for landlords or agents to discriminate against tenants with children or those receiving benefits. This covers both obvious discrimination like adverts saying “No DSS” and more subtle ways landlords can put people off. The only exceptions are legitimate ones, like avoiding statutory overcrowding or if a tenant genuinely cannot afford the rent. For flatmates looking for a new housemate, this means you cannot discriminate either — and if a landlord does, tenants can apply for Rent Repayment Orders.
Civil penalties for non-compliance have risen sharply. First or minor offences can cost up to £7,000, and repeat offenders face fines of up to £40,000. The maximum amount reclaimable via Rent Repayment Orders has doubled, allowing tenants to recover up to 24 months of rent in the most serious cases. Repeat offenders automatically receive the maximum — the tribunal will order the full 24 months’ rent if the landlord has previously committed the same offence. That’s a serious deterrent.
What I notice is that most flatmates don’t realise these protections exist until something goes wrong. If you’re in a shared house and your landlord tries to evict you without a valid Section 8 ground after 1 May 2026, or refuses to consider a pet request within 28 days, you have real legal recourse. A tenant landlord lawyer can help you navigate a Rent Repayment Order claim, but the process itself is designed to be accessible — you apply to the First-tier Tribunal, and the fee is £47.
Where shared housing agreements go wrong
The most common mistakes I see in shared housing come down to three things: not having a written agreement between flatmates, misunderstanding joint liability, and ignoring the new legal requirements. Let me walk through each one.
Relying on verbal agreements
If your tenancy is based entirely on a verbal agreement made before 1 May 2026, the landlord cannot use the Renters’ Rights Act Information Sheet. They must instead provide a written summary of terms by 31 May 2026. That’s a legal requirement, not a suggestion. For flatmates, a verbal agreement about who pays what and when is almost impossible to enforce. If one person stops paying, the others are left covering the shortfall. A written flatmate agreement doesn’t need to be complicated — a simple document signed by everyone, covering rent split, bills, notice periods, and what happens if someone leaves, is enough to prevent most disputes.
Not understanding joint and several liability
This is the one that catches people out most often. On a joint tenancy, every tenant is individually responsible for the full rent. If your flatmate loses their job and can’t pay, the landlord can come after you for the whole amount. You can then try to recover the money from your flatmate, but that’s a separate civil matter. The new rules don’t change joint liability — they just make it harder for landlords to evict you for non-payment. Under the revised Section 8 grounds, a landlord can only evict for persistent rent arrears if the tenant is at least three months in arrears. That gives you some breathing room, but it doesn’t mean you won’t be chased for the money.
Ignoring the new written information requirements
From 1 May 2026, landlords must give tenants certain written information about key terms of the tenancy before signing the agreement. If they don’t, tenants can complain to the local council, and the landlord could receive a fine of up to £7,000. For existing written tenancies signed before 1 May 2026, tenants must receive the Renters’ Rights Act Information Sheet 2026 by 31 May 2026. If you’re a tenant and your landlord hasn’t provided this, you have grounds to complain. If you’re a landlord or a lead tenant managing a shared house, you need to make sure this is done. The government has published a PDF guide with the required information — it’s 10 pages and covers everything you need to include.
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| Phase | Start Date | Key Changes for Shared Housing |
|---|---|---|
| Phase 1 | 1 May 2026 | Section 21 abolished, fixed terms become periodic, rent increase protections, pet requests, discrimination ban |
| Phase 2 | Late 2026–2028 | PRS Database rollout, Landlord Ombudsman introduced, mandatory landlord registration |
| Phase 3 | 2035–2037 (TBC) | Decent Homes Standard applied to private rented sector, EPC C target by 2030 |
What I’d say about the discrimination ban is that it’s broader than most people realise. It covers both obvious discrimination like adverts saying “No DSS” and more subtle ways landlords or agents can put people off or block them from renting. If you’re a flatmate looking for a new housemate and you reject someone because they receive benefits, you could be in breach of the law. The only exceptions are legitimate ones, like avoiding statutory overcrowding or if a tenant cannot afford the rent. A tenant landlord lawyer can advise on what counts as a legitimate reason in your specific situation.
How to set up a roommate lease agreement that works
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The key to a good roommate lease agreement is covering the scenarios that actually cause problems. Here’s how to approach it.
Get the tenancy agreement right first
Your tenancy agreement with the landlord is the foundation. Make sure it includes all the required written information that must be given to tenants from 1 May 2026. This can be included in the tenancy agreement itself or given separately. The government has published a list of what needs to be included — check the PDF guide on gov.uk. If you’re the lead tenant managing the shared house, you’re responsible for making sure everyone gets this information. A tenant landlord lawyer can review the tenancy agreement to ensure it complies with the new rules.
Write a flatmate agreement that covers the hard stuff
This is the document that prevents most disputes. It should cover: how rent and bills are split, what happens if someone wants to move out early (including notice period and finding a replacement), how guests are handled, cleaning responsibilities, and what happens if someone doesn’t pay. The agreement doesn’t need to be legally complex — a simple signed document is enforceable as a contract between you. If you want a template, there are plenty available online, but make sure it’s updated for the new rules. A tenant landlord lawyer can help draft one that covers all the bases.
Understand the new notice periods and grounds for eviction
From 1 May 2026, landlords can no longer use Section 21 to evict tenants. They must rely on revised Section 8 grounds, which include: landlord or family intending to occupy the property (after 12 months), intention to sell (after 12 months), redevelopment requiring vacant possession, persistent rent arrears (at least three months in arrears), and persistent antisocial behaviour. For student HMOs, landlords can recover possession at the end of the academic year (June to September) provided they give four months’ notice. If a Section 21 notice was served on or before 30 April 2026, it remains valid — but court proceedings must begin within six months of serving the notice, or by 31 July 2026, whichever comes first. After 1 May 2026, no new Section 21 notices can be served under any circumstances.
Plan for the future phases
The PRS Database will roll out regionally from late 2026. Landlords will be legally required to register both themselves and their properties on the database, with an annual fee. The database will serve as a central hub for verified information on landlords, tenants, and property details. The Landlord Ombudsman will follow, providing free, binding dispute resolution for tenants. Private landlords will be required to join the scheme, expected by 2028. If you’re in a shared house, this means you’ll have a formal route to resolve disputes without going to court. The Decent Homes Standard is expected to apply to the private rented sector by 2035–2037, requiring minimum housing quality standards and alignment with energy efficiency targets (EPC C by 2030, subject to review). Awaab’s Law will introduce clear legal timeframes for landlords to fix serious issues like damp or mould — the timescales are still under consultation.
- 1Check your tenancy typeAre you on a joint tenancy or individual tenancy? This determines your liability and what happens if someone leaves. If you’re unsure, check your tenancy agreement or ask the landlord.
- 2Get the required written informationFrom 1 May 2026, landlords must provide written information about key terms before signing. Existing tenants must receive the Renters’ Rights Act Information Sheet by 31 May 2026. If you haven’t received it, ask for it.
- 3Write a flatmate agreementCover rent split, bills, notice periods, guests, cleaning, and what happens if someone leaves. Get everyone to sign it. Keep a copy each.
- 4Know your rights under the new rulesYou can challenge rent increases at tribunal for £47. Landlords must consider pet requests within 28 days. Discrimination against benefit recipients or families is illegal. If your landlord breaches these rules, you can apply for a Rent Repayment Order.
Frequently asked questions about roommate lease agreements
Can I be evicted if my flatmate stops paying rent? ▾
What happens if my landlord hasn’t given me the Information Sheet by 31 May 2026? ▾
Can my landlord increase the rent to force me out? ▾
What if I want to leave before my fixed term ends? ▾
Can my landlord refuse to let me have a pet? ▾
What’s the difference between a joint tenancy and a lodger agreement? ▾
The biggest change coming in May 2026 is that fixed-term tenancies become a thing of the past for most private renters. That gives you more flexibility, but it also means you need to be more organised about how you manage shared housing. If this was useful, you might also want to read Shared Housing SOS: Surviving a UK Flatshare (Thriving).
Sources and Further Reading
Essential Lease Clauses Renters Should Always Check — A practical breakdown of the clauses that matter most in any tenancy agreement, including what the new rules mean for your rights.
Decoding UK Lease Agreements: What Tenants Really Need to Know — A deeper look at how to read and understand your tenancy agreement, with specific guidance on the changes introduced by the Renters’ Rights Act.
Tenancy agreements: written information for your tenant. GOV.UK, 2026.
The Renters’ Rights Act: What’s Changing and When?. SpareRoom, 2026.
