The Renters’ Rights Act is live, and a plan built on the old assumptions is now out of date

The biggest shake up of private renting in a generation is here. Past the headlines about tenant protection, the Act quietly invalidates assumptions baked into a lot of landlords’ strategies. It is not coming. It arrived.

The Renters’ Rights Act 2025 received Royal Assent in October 2025 and its core reforms came into force on 1 May 2026, widely described as the biggest change to the rental sector in around forty years. For years reform sat on the horizon as a thing to prepare for. A great many landlords are still running plans built on rules that no longer apply.

I want to look past the headlines at what this means for the numbers.

Section 21 has gone, and so have fixed terms

Landlords can no longer end a tenancy simply by giving notice without a reason. To recover possession you need a specific, valid legal ground under the Section 8 framework, such as wanting to sell, wanting to move in, or tenant fault such as serious arrears, and you have to be able to evidence it.

Fixed term assured short-hold tenancies have gone too. Tenancies are now periodic, rolling arrangements that continue until they are properly ended.

Why this reaches into the financial plan

It is tempting to file all this under operational and assume it does not touch the plan. It does. How quickly you can regain possession, how you exit a tenanted property, how long a problem tenancy might run: those assumptions sit underneath every buy to let model ever built, and they have all shifted.

Possession takes a valid ground and a process, which can mean longer timescales than landlords were used to, and arrears based grounds carry higher thresholds and longer notice periods than before.

So model voids and arrears a little more conservatively, and hold enough liquidity to absorb a longer gap when a tenancy goes wrong.

Selling needs a plan, not a notice

If your strategy involves selling with vacant possession, you can no longer simply serve notice and recover the property. There is a dedicated possession ground for sale, with its own notice period and restrictions preventing you from re-letting if you change your mind within a set period after using it.

That is not a barrier to selling. It is a reason to plan the exit further ahead than you used to.

Rent increases and the daily running of it

Rent can generally now be increased only once a year, with a required notice period, and the scope for the sort of in tenancy increases some landlords relied on is curtailed. There are new rules about how tenancies are advertised and what can be asked of tenants at the outset.

The compliance detail is where the penalties live

There are immediate obligations attached to the new regime, including requirements to give tenants prescribed information, and getting that wrong can carry financial penalties. The broad planning point is simply that the cost and administration of compliant letting have gone up, and an honest financial model should say so.

And there is more coming

The May changes are not the end of it. Further elements, including a landlord database and an ombudsman service, are being introduced in stages. Assume continued development rather than a settled framework.

Be careful where you get this from

A word on sources, because it matters more here than usual. The specifics of grounds, notice periods, thresholds and compliance duties are precise, and precise things are exactly what get mangled in a confident summary.

I am regulated. What I write goes through a compliance process before it reaches you, which is why this article is careful and why it took a while to arrive. Anybody else can post a punchy explanation of the new rules the afternoon they are announced, be wrong about a notice period, and face nothing at all when a landlord acts on it. Speed and certainty are cheap to produce. Being answerable for them is not.

So check the current official guidance before you act on anything, including this.

Plan within the regime, not against it

The fundamentals have not changed. Model honestly, hold liquidity, protect the downside, plan the exit, take a long view. What the Act has done is move some of the inputs, and the direction of travel remains towards greater tenant protection rather than away from it.

Refresh the inputs. Then get on with it.

On a personal note, and slightly beside the point, I have noticed that every significant piece of legislation in my working life has been announced as the end of something. Buy to let has been declared finished more than once. It never quite is. It just gets a bit more procedural, and the people who read the procedure do better than the people who complain about it.

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This article is general information, not personal financial, legal or regulatory advice, and the rules here are detailed and still evolving. Always check current official guidance and take professional advice for your own circumstances before acting.

Legacy Capital Management is an Appointed Representative of and represents only St. James’s Place Wealth Management plc (which is authorised and regulated by the Financial Conduct Authority) for the purpose of advising solely on the Group’s wealth management products and services, more details of which are set out on the Group’s website at www.sjp.co.uk/products.

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