Section 8 vs Section 21: Key Differences for Landlords in 2026

For more than three decades, Section 8 and Section 21 of the Housing Act 1988 were the two routes a landlord in England could use to recover possession of a rented property. Choosing between them was a genuine decision: Section 21 was faster and required no reason, while Section 8 was slower but allowed possession to be sought at any point in a tenancy, provided a ground could be proved.

That decision disappeared on 1 May 2026, when the Renters' Rights Act 2025 abolished Section 21 entirely. Landlords and letting agents still search for "Section 8 vs Section 21" in large numbers — partly out of habit, partly because older guidance and templates online have not caught up, and partly to understand transitional notices served before the change. This guide answers the question properly: what each notice meant, how they differed, and what the abolition of Section 21 actually changes for a landlord seeking possession today.

For the full story of the reform itself, see our guide to Section 21 Abolished: What Landlords Should Do Now. [INTERNAL LINK: Section 21 abolition guide]

A Section 8 notice is a notice seeking possession under Section 8 of the Housing Act 1988. Unlike Section 21, it has always required the landlord to state and prove a specific reason — known as a ground — drawn from Schedule 2 to the Act. Common grounds include serious rent arrears, antisocial behaviour, the landlord wanting to sell, or the landlord wanting to move back in.

Section 8 notices are now served on Form 3A, which replaced the previous Form 3 from 1 May 2026. Grounds are split into mandatory grounds, where the court must order possession once the conditions are proved, and discretionary grounds, where the court decides whether eviction is reasonable. Because Section 21 is gone, Section 8 is now the route for every possession claim in England, not just the ones where a clear fault or reason exists.

A Section 21 notice allowed a landlord to end an assured shorthold tenancy without giving the tenant any reason — the so-called "no-fault" eviction route. Provided the correct form (Form 6A) and notice period were used, and the property met certain compliance requirements, a landlord did not need to prove rent arrears, antisocial behaviour, or anything else.

Section 21 notices typically required at least two months' notice and could be enforced through the accelerated possession procedure — a largely paperwork-only county court process that often did not require a hearing. This made Section 21 the faster, more predictable option, and historically the most commonly used possession route in England.

In 2026, the honest answer is: always. Since Section 21 no longer exists, Section 8 is the route for every possession scenario, including ones that would previously have gone through Section 21 by default — selling a property, moving back in, or simply wanting the tenancy to end without an obvious "fault" on the tenant's side. The practical question is no longer "Section 8 or Section 21," but which ground under Section 8 applies.

Section 8 is the right tool whenever a landlord can point to one of the following: serious or persistent rent arrears, antisocial behaviour or property damage, a genuine intention to sell or move back in (subject to the 12-month restriction), or another Schedule 2 ground such as a tenancy obtained by a false statement.

This section is kept for context only. Before 1 May 2026, landlords typically reached for Section 21 when they wanted certainty and speed and did not want their reason for seeking possession tested in court — for example, ending a tenancy at the close of a fixed term, or recovering a property to sell without needing to evidence the sale.

None of that applies any longer.There is no scenario in 2026 where a landlord can choose Section 21 over Section 8 — the choice has been made by Parliament, not by the landlord's preference for speed. The only live exception is a landlord who validly served a Section 21 notice before 1 May 2026 and is still within the transitional window to issue court proceedings on it (see below).

Schedule 2 to the Housing Act 1988 sets out the grounds a landlord can rely on under Section 8. They fall into two categories:

A notice can cite more than one ground at once, which is common practice for rent arrears cases — citing Ground 8 alongside Grounds 10 and 11 gives the landlord a discretionary fallback if the mandatory threshold is not met by the hearing date. See our Section 8 multiple grounds generator [INTERNAL LINK: Section 8 multiple grounds generator] for the full list.

One of the clearest practical differences between the two systems was the notice period. Section 21 used a flat two-month minimum, regardless of why the landlord wanted the property back. Section 8 notice periods vary considerably by ground:

• No minimum notice: Ground 14 (nuisance, annoyance or illegal use)
• 2 weeks: Ground 7B (no right to rent), Ground 12 (breach of tenancy)
• 4 weeks: Ground 8, 10 and 11 (rent arrears and late payment)
• 2 months: Ground 7 (death of the tenant)
• 4 months: Ground 1 (moving in), Ground 1A (selling), Ground 2 (mortgage repossession)

Where a notice cites several grounds with different notice periods, the longest period applies to the whole notice — a rule that has no equivalent under the old Section 21 system, since Section 21 only ever had one notice period to apply.

Section 21 cases were generally handled through the accelerated possession procedure — a paper-based process under the Civil Procedure Rules designed specifically for "no-fault" claims, which often resulted in a possession order without either party attending court.

Section 8 claims proceed under the standard Part 55 possession procedure. Where the tenant disputes the ground relied on — which happens far more often under Section 8 than it ever did under Section 21 — the case typically goes to a hearing, where both sides can give evidence and the judge decides whether the ground is made out (and, for discretionary grounds, whether possession is reasonable).

For landlords used to the old Section 21 process, the biggest adjustment is preparing for a hearing as the default expectation, not the exception. See our possession claim guide [INTERNAL LINK: possession claim guide] for the full Part 55 process.

Section 21 was generally the cheaper and faster route when both options existed, because the accelerated procedure needed less preparation and rarely required a solicitor or barrister to attend a hearing. Section 8 claims tend to involve more time and cost: gathering evidence, preparing for a contested hearing, and — for discretionary grounds — the uncertainty of a reasonableness test that a judge could decide either way.

Now that Section 8 is the only option, the comparison is less relevant than the practical planning it implies: landlords should budget more time (notice periods up to four months, plus court waiting times) and expect to invest more in record-keeping — rent ledgers, correspondence, and evidence of intent — from the very start of a tenancy, not just when a problem arises.

The abolition of Section 21 sits inside the wider Renters' Rights Act 2025, which received Royal Assent on 27 October 2025 and commenced on 1 May 2026. Alongside removing Section 21, the Act:

• Converted every assured shorthold tenancy into an open-ended assured periodic tenancy
• Introduced Form 3A as the prescribed Section 8 notice form, replacing Form 3
• Added new grounds, including Ground 1A for landlords selling a property
• Increased several notice periods, most significantly to four months for Grounds 1, 1A and 2
• Introduced a 12-month restriction preventing Grounds 1 and 1A from being used early in a tenancy
• Created a transitional window for Section 21 notices served before 1 May 2026, ending 31 July 2026 in almost all cases

For a full timeline of dates and a deeper breakdown of every ground and notice period, see our complete guide: Section 21 Abolished: What Landlords Should Do Now. [INTERNAL LINK: Section 21 abolition guide]

"Section 8 vs Section 21" used to be a real fork in the road for landlords seeking possession in England — one fast and reason-free, the other slower but always available. Since 1 May 2026, that fork has closed: Section 21 is abolished, and Section 8 is the only way to recover a property, whatever the landlord's reason for wanting it back.

The practical task for landlords now is not choosing between the two notices, but getting Section 8 right — identifying the correct ground, calculating the correct notice period, using the current Form 3A, and gathering the evidence a court will expect at a hearing. Landlords still relying on old Section 21 habits, templates, or expectations are the ones most likely to see a possession claim go wrong in 2026.