2025 wrapped: the year that changed UK rentals

This is August’s review of the 2025 UK rental market, first published in December 2025 and updated in 2026 with the confirmed figures and what happened next.

2025 reshaped the UK private rented sector more than any year in nearly four decades. The Renters’ Rights Act received Royal Assent, rental inflation cooled sharply, interest rates fell back from their peak, stamp duty rose for investors, and a meaningful number of landlords decided to sell. This is the recap: the headlines, the hard numbers, and the regulation that went on to shape 2026.

Royal Assent: the Renters’ Rights Act becomes law

The defining story of the year was the Renters’ Rights Act receiving Royal Assent on 27 October 2025, the most significant change to the private rented sector in a generation. The government confirmed in November that the bulk of the reforms would commence on 1 May 2026, a single date on which all tenancies, new and existing, move onto the new system at once.

At the heart of the Act is the abolition of Section 21 no-fault eviction. From 1 May 2026, landlords can no longer end a tenancy without a specific reason, all assured shorthold tenancies convert to assured periodic tenancies, and possession relies on Section 8 grounds such as arrears, sale, or the landlord moving in. The Act also bans rental bidding wars, requires a single advertised rent, limits increases to once a year through a prescribed notice, and gives tenants a free route to challenge above-market rises at tribunal. Alongside these, it introduces a national landlord database and, by 2028, mandatory membership of a PRS Landlord Ombudsman scheme. The full detail sits in our Renters’ Rights Act hub; the headline for 2025 was that years of uncertainty finally resolved into a fixed commencement date.

The run-up to Royal Assent saw a burst of activity, with some landlords serving notices or raising rents ahead of the changes, and the National Residential Landlords Association reporting that 41% of landlords were likely to sell during 2025-26, against 19% two years earlier. Landlords approaching the transition digitally, with proper compliance trackingand document storage, were best placed to adapt, as our guide to becoming a digital landlord explains.

The great rental cooldown: what the ONS data showed

While the Act took the headlines, the market quietly changed underneath it. After years of soaring rents, inflation cooled steadily through 2025. The ONS Price Index of Private Rents, which tracks the whole rented stock rather than just new lets, fell from 9.0% annual growth in December 2024 to 7.7% in March, 6.7% in June and 5.0% by October 2025, the slowest rate since August 2022. By October the average UK rent stood at £1,360 a month, just £65 higher than a year earlier.

The cooling was uneven. In England, annual growth fell from 9.2% in January to 5.0% by October, with the North East still highest and Yorkshire and the Humber lowest. Wales ran hotter at 6.7%, while Scotland recorded just 3.4%, the legacy of its earlier rent control measures. Portal data for new lets told the same story from a different angle: Zooplareported new-tenancy rents up just 2.2% over the year to October, the slowest in four years, with the average new let at £1,320.

Two forces drove the slowdown. Net migration fell dramatically, with provisional ONS estimates showing a fall of around 78% between mid-2023 and mid-2025, easing a key source of rental demand. At the same time, improved mortgage affordability brought first-time buyers back, with many leaving rented homes and freeing up stock. Supply improved too, with the number of homes to rent up around 15% over the year, though still well below pre-pandemic levels, and properties taking longer to let. For landlords, the message was clear: the era of automatic double-digit rent rises was over, and success now depends on competitive pricing, quality and good service.

Interest rates: some relief, but not a return to cheap money

After the pain of 2022 and 2023, 2025 brought gradual relief as the Bank of England cut its base rate from 4.75% at the start of the year to 4.5% in February, 4.25% in May and 4.0% in August, where it was held in November. By year end the rate stood at 4.0%, a full 1.25 points below its peak but still high by the standards of the previous decade.

The relief was real but partial. Average five-year fixed buy-to-let rates eased to around 4.5% to 4.7% by the end of 2025, far better than the near-6% of late 2022 but still well above the sub-2% deals many landlords had locked in before 2022. With a large number of fixed deals expiring during the year, many landlords still moved onto higher rates than they had been paying, so buy-to-let affordability remained a pressure point even as headline rates fell. The Bank’s messaging stayed cautious, and the open question going into 2026 was whether rates would fall far enough, fast enough, to improve margins squeezed by slower rent growth and rising costs.

Stamp duty and the ongoing tax squeeze

April 2025 brought significant stamp duty changes. The temporary threshold increases from 2022 expired, the nil-rate band returned to £125,000, and first-time buyer reliefs tightened. For landlords buying additional property, this stacked on top of the 5% surcharge, more than doubling the bill on many purchases and prompting a rush to complete before the deadline. Combined with slower rent growth and higher borrowing costs, the higher entry cost led many investors to conclude the numbers no longer worked.

Underneath the headline changes, Section 24 continued to squeeze mortgaged landlords by restricting mortgage interest relief to the basic rate, which pushes higher-rate landlords into materially larger tax bills than the old system allowed. The familiar response continued through 2025, with many landlords moving properties into limited companies to deduct interest in full and access corporation tax rates, though incorporation carries its own costs and complexity and rarely suits those with just one or two properties. Looking further ahead, the November 2025 Autumn Budget confirmed a new property income tax from April 2027, raising rates on rental profit to 22%, 42% and 47%, a further reason for landlords to review their structure, as our Making Tax Digital and landlord tax guide sets out.

Energy efficiency: the 2030 deadline came into focus

2025 brought no new energy standards into force, but the direction became much clearer. Government consultations confirmed the path to requiring rented homes to reach EPC C, with new tenancies expected to comply from 2028 and all tenancies by 2030, and a new assessment methodology focused on fabric performance, heating efficiency and smart readiness arriving in 2026. A proposed cost cap of around £15,000 per property, with a lower affordability threshold and an exemptions route, gave landlords some protection against unlimited spending.

Around 60% of rented homes already meet the C standard, leaving a significant share needing work over the next few years. Many landlords acted early in 2025, prioritising insulation, glazing, efficient heating and smart controls, both because better-rated homes let faster and command stronger rents, and because spreading the cost beats a last-minute rush late in the decade. Properties holding a valid EPC C when the new methodology launches will keep that rating until the certificate expires, which is a strong incentive to certify borderline properties sooner rather than later.

The exodus: landlords voting with their feet

No single figure captured the mood better than the NRLA finding that 41% of landlords were likely to sell, more than double two years earlier, and our piece on why landlords are leaving the sector explores the reasons in depth. They were interlocking: regulatory complexity ahead of the Renters’ Rights Act, rising mortgage and compliance costs, the tax squeeze from Section 24 and higher stamp duty, worries about regaining possession once Section 21 went, and, for many approaching retirement, a natural exit point while prices held up.

The effect on the market was mixed rather than uniformly negative. Some sold homes left the rented stock for owner-occupiers, tightening supply, while others passed to landlords or institutional investors and stayed available. In much of the country outside London, supply actually improved as competition eased; in high-demand city centres and university towns, losing rental homes made shortages worse. Tenants with stable incomes and good references gained choice and slower rent growth, while those with more complex circumstances often found remaining landlords more selective. For landlords who stayed, the lesson was professionalisation: good systems, current records, quality properties, quick responses and careful attention to tax structure.

What happened next: into 2026

The dates 2025 had been bracing for duly arrived. The Renters’ Rights Act began commencing on 1 May 2026, abolishing Section 21 in England and converting tenancies to assured periodic agreements, just as the autumn’s confirmation had set out. Rent growth kept easing, with ONS data showing UK annual growth down to around 3.5% by spring 2026. And the November 2025 Autumn Budget confirmed the property income tax rise from April 2027 and a high-value council tax surcharge on homes worth over £2 million from April 2028, while leaving stamp duty unchanged and stopping short of applying National Insurance to rental income. In short, the uncertainty that defined 2025 largely resolved in the first half of 2026, and the landlords who used the year to prepare, rather than wait, met those changes from a position of strength.

What 2025 taught us

A handful of lessons carried forward. Regulation is now a permanent feature rather than a one-off shock, so ongoing adaptation matters more than any single rule. Market dynamics have fundamentally changed, with supply and demand rebalancing and automatic rent growth gone for most areas. Tax efficiency has become central to viable returns, making professional advice on structure worthwhile for leveraged landlords. Energy efficiency is the next frontier, and 2026 is the year to plan for it rather than the year to ignore it. And across all of these, professionalisation is no longer optional: the complexity of modern letting makes proper systems essential, and trying to run a portfolio on spreadsheets and memory is increasingly untenable. Rules also differ across the four nations, as our guide to UK landlord laws by region explains.

Final thoughts

2025 was a hard year for landlords, but not a closing of the door. The reforms, the cooldown, the tax changes and the exits reshaped the sector, yet strong, stable demand remains, particularly for quality homes managed well. The landlords most likely to thrive treat letting as a business: they price competitively, keep compliance current, budget for void periods and upgrades, and use the right tools to stay organised. If you want to go into the year ahead ready rather than caught out, you can get compliance and documents in order in one place, model returns with our rental yield calculator, and start for free.

Disclaimer: This article is a guide and not intended to be relied upon as legal or professional advice, or as a substitute for it. August does not accept any liability for any errors, omissions or misstatements contained in this article. Always speak to a suitably qualified professional if you require specific advice or information.