After nearly forty years, Section 21 — the notice that allowed landlords to regain possession without giving a reason — will cease to exist. Here's exactly what's changing, when it's changing, and what you need to do about it.
In about 3 months, every landlord in England loses their fastest eviction route. Forever. Most have no exit plan.
I'm Jun, founder of CortexaProp. I've managed over 1,000 properties. Today I'm going to walk you through exactly what's changing, when it's changing, and — most importantly — what you need to do about it.
What I'm about to show you could save you 12 months and £20,000 in losses.
After nearly forty years, Section 21 — the notice that allowed landlords to regain possession of their property without giving a reason — will cease to exist.
If you're thinking "I've heard about this, I'll deal with it later" — that's precisely the mindset that costs landlords thousands. The transition rules are already in motion. The window to serve a valid Section 21 notice is closing. The decisions you make in the next few months could determine whether you have a smooth exit strategy — or find yourself trapped in a legal process that takes over a year.
In 2023, approximately 26,000 Section 21 notices were served across England. That's 26,000 landlords who used the "no-fault" route to regain their properties — whether to sell, to move family in, or simply because the tenancy wasn't working.
From May 2026, that option disappears entirely.
The Renters' Rights Act 2025 received Royal Assent in late 2025, and the government has confirmed the implementation date: 1st May 2026. This isn't speculation anymore. This is law.
Here's what makes this different from previous property legislation: this is what the government calls a "big bang" implementation. That means on 1st May 2026, almost every existing assured shorthold tenancy in England will automatically convert to what's called a "Section 4A assured tenancy."
No fixed terms. No predetermined end dates. Just rolling periodic tenancies that continue indefinitely — unless you have grounds to end them.
Your existing tenancies will change. Not just new ones. Existing ones.
⚠️ The Trap: If your Section 21 notice was served more than two months before it was due to expire, the calculation changes. You get the earlier of four months from notice expiry OR 31st July 2026. The government specifically designed this to prevent landlords from serving notices early just to beat the deadline.
What This Means in Practice:
Under the new system, every eviction requires a reason. Here are the grounds that matter most to private landlords:
Key Number to Remember: 12 Months Minimum Tenancy
The protected period means you cannot use Ground 1A (sale) or Ground 1 (occupation) during the first 12 months of any tenancy. Plan accordingly.
Under Section 21, landlords could use the "accelerated possession procedure" — a paper-based process that didn't require a hearing. That's gone.
From May 2026, every possession claim requires a hearing. Every single one.
The current average time from serving a Section 8 notice to obtaining possession is 6-12 months. With the anticipated increase in contested cases — because tenants now have nothing to lose by defending — that timeline is expected to extend.
The government has committed to court reforms, but those reforms are not yet in place. The Landlord Database and Ombudsman service aren't coming until late 2026 at the earliest. The Decent Homes Standard implementation is scheduled for 2027.
What This Means in Practical Terms:
If you need to regain possession of a property after May 2026, plan for a minimum of 12 months from identifying a problem to having vacant possession.
You have a narrow window. Serve a Section 21 notice before 30th April 2026. If your tenant doesn't vacate, pursue possession through courts before 31st July 2026. After that, you're using Ground 1A — which means waiting out the 12-month protected period if you have a newer tenancy.
Start documenting everything now. Under the new system, your ability to regain possession depends on evidence. Rent payment records. Communication logs. Property inspection reports. The landlords who will navigate this successfully are the ones with comprehensive documentation.
Act now, not later. If you have legitimate grounds for possession — arrears, anti-social behaviour, breach of tenancy — the Section 21 route is still available until April 2026. After that, you're in contested territory.
This is exactly why we built CortexaProp. Our platform continuously monitors your compliance exposure, tracks critical dates, and alerts you to risks before they become crises. Because in this new regulatory environment, the landlords who survive are the ones who anticipate problems — not the ones who react to them.
The abolition of Section 21 is the most significant change to private renting in England since the Housing Act 1988. It's not something you can ignore and hope goes away.
But here's what I want you to take from this: this isn't about whether the changes are fair or unfair. That debate is over. The law has passed. The dates are set.
What matters now is how you respond.
The landlords who will thrive in this new environment are the ones who understand the rules, prepare their documentation, and make strategic decisions based on facts — not fear.
This change doesn't mean landlords lose their rights completely — but it does mean the rules are changing in ways that aren't always obvious.