Section 8 vs Section 21: Why Possession Changed on 1 May 2026
For thirty years, landlords had two ways to recover a property: Section 21 (no reason needed) and Section 8 (cite a ground). The Renters' Rights Act 2025 collapsed that into one. From 1 May 2026, Section 21 is abolished, and Section 8 is the only route. If you grew up on the old regime, this post explains what actually changed and how to think about possession now.
What this means for you. The mental model has flipped. Under Section 21 you didn't need a reason — you served notice and, after the period, applied for possession. Under Section 8 the reason is the whole case: you cite a statutory ground, you evidence it, and a court tests it. Possession is now slower, more evidence-driven, and only available where a genuine ground exists. That's the single biggest practical change the RRA makes to a landlord's day-to-day.
What Section 21 was — and why it's gone
Section 21 was the "no-fault" route. On an assured shorthold tenancy, a landlord could serve a Section 21 notice (the prescribed Form 6A) without giving any reason, and after the notice period apply for possession — often via the fast "accelerated" paper procedure. It made the assured shorthold tenancy genuinely shorthold: the landlord could always get the property back.
The Renters' Rights Act 2025 abolished Section 21 from 1 May 2026 as the centrepiece of the reform. With it went the assured shorthold tenancy itself — all such tenancies converted to periodic assured tenancies by operation of law on commencement. (We cover that conversion in the Section 21 abolition guide and the now-live commencement post.)
If you served a Form 6A before 1 May 2026, transitional rules let it run to a court deadline — that's a separate, time-limited situation covered in the Form 6A transition guide. But no new Section 21 notice can be served now.
What Section 8 is
Section 8 is the grounds-based route, and it predates the reform — it's just that most landlords rarely used it while Section 21 existed. A Section 8 notice (prescribed Form 3A for private lets) cites one or more grounds from Schedule 2 to the Housing Act 1988: rent arrears, the landlord needing to sell or move in, anti-social behaviour, breach of tenancy, and so on. The landlord serves the notice, waits out the ground-specific notice period, and — if the tenant doesn't leave — applies to the court, where the ground is tested.
The two routes side by side
| Section 21 (abolished) | Section 8 (the only route now) | |
|---|---|---|
| Reason needed? | No | Yes — a Schedule 2 ground |
| Prescribed form | Form 6A | Form 3A (private sector) |
| Evidence at court | Minimal | The ground must be evidenced |
| Court procedure | Often accelerated (paper) | Standard possession claim |
| Available from 1 May 2026? | No | Yes |
How to think about possession now
The honest reframing: you can no longer assume you'll get the property back on demand. Three implications worth internalising:
- Tenant selection and rent collection matter more. Because the easiest exit (Section 21) is gone, preventing the problem — careful referencing, prompt arrears action — is worth more than it used to be.
- Arrears need watching against the Ground 8 threshold. The mandatory rent-arrears ground now needs 3 months / 13 weeks, tested at notice and hearing. Letting arrears drift, then hoping for a quick possession, no longer works. See the Ground 8 guide.
- The "I want to sell / move in" grounds carry long notice and conditions. Grounds 1 and 1A give you a route to recover for genuine personal/sale reasons, but with a 4-month notice, a 12-month minimum tenancy before the ground is available (Schedule 2: "the current tenancy began at least 1 year before the relevant date"), and re-letting restrictions. They are not a Section 21 substitute.
None of this makes letting unworkable — the vast majority of tenancies end by agreement, not by court order. But the safety net of guaranteed no-fault possession is gone, and the discipline that replaces it is good record-keeping and early, grounds-based action when something goes wrong.
Where to start if you need possession today
- Identify whether a ground genuinely applies — see the Section 8 grounds guide.
- Serve the correct form (Form 3A) with the right notice period — see the serving guide.
- Keep evidence for the ground and proof of service, and issue proceedings within the 12-month window if the tenant doesn't leave.
Related guides
- Section 21 Has Been Abolished: What Landlords Need to Do — the abolition and the AST conversion.
- How to Serve a Section 8 Notice (Form 3A) — the new standard procedure.
- Section 8 Grounds for Possession Under the RRA — the grounds you can rely on.
- Form 6A Section 21 Notice: RRA Transition Guide — for pre-1-May Section 21 notices still in play.
Sources
- Renters' Rights Act 2025 (full text) — abolition of Section 21 and the wider reform.
- Housing Act 1988 s.8 — the Section 8 notice and possession procedure.
- Housing Act 1988 s.21 — the now-abolished no-fault route (as amended).
- GOV.UK — Evicting tenants: Section 21 and Section 8 notices — operator guidance on the possession routes.
This is general information about the change from Section 21 to Section 8 possession and is not legal advice. Possession claims turn on the specific ground and procedure — for contested or urgent cases consult a qualified housing solicitor. Crocker Digital Ltd (Company No. 17008789) and RentersActReady accept no liability for action taken solely on the basis of this article.