On 1 May 2026, the first phase of the Renters’ Rights Act came into force in England. Section 21 no-fault evictions are abolished. Fixed-term assured shorthold tenancies are replaced by periodic tenancies from day one. The possession framework that has underpinned buy-to-let acquisition strategy for more than thirty years has fundamentally changed.

It is three weeks since those changes took effect. For investors currently in the market — assessing lots for the summer auction season, reviewing off-market opportunities, running numbers on portfolio additions — the practical question is not whether these changes matter but how they change the due diligence and acquisition calculation specifically.

The Renters’ Rights Act, however, is not the only material change in the legal landscape. A cluster of significant regulatory shifts have accumulated over the past two years, and in combination they have meaningfully altered what a thorough pre-acquisition review needs to cover. This article sets out the five changes that are live and consequential right now, and what each means for investors making acquisition decisions this week.

The possession framework that underpinned buy-to-let for thirty years has changed. Three weeks in, how are you adjusting?

1. The Renters’ Rights Act 2025: The Possession Reset

The most immediate change is the one making headlines. From 1 May 2026, Section 21 is gone. Landlords can no longer recover possession of a privately rented residential property in England without establishing a statutory ground under the amended Schedule 2 to the Housing Act 1988.

For investors acquiring tenanted property, the practical implications are direct:

  • Vacant possession strategy has changed. Where the acquisition plan involves buying tenanted and achieving vacant possession within a defined period, the legal route must now be mapped against the available statutory grounds. Ground 1A (intention to sell) requires a four-month notice period and cannot be served until the tenancy has been in existence for twelve months. Ground 1 (owner occupation) carries similar constraints. The old approach of serving a Section 21 notice shortly after acquisition is no longer available.
  • Pricing tenanted vs vacant possession. The discount typically applied to tenanted property must now reflect not just the hassle of managing an existing tenancy but the genuine legal timeline to vacant possession if that is required. For some tenanted acquisitions, that timeline has materially extended.
  • Deposit compliance is now harder to ignore. Non-compliance with tenancy deposit protection obligations is a bar to certain possession grounds. Investors acquiring from non-compliant landlords inherit a position that needs to be regularised before the relevant grounds can be relied upon.
  • New tenancy structure from day one. Any new tenancy granted from 1 May 2026 is automatically a periodic tenancy with no fixed term. Investors should understand what this means for cash flow forecasting, tenant stability assumptions and void management.

None of this makes tenanted acquisitions unviable. The private rented sector is structurally undersupplied and rental demand remains strong. But it does require a more careful assessment of the occupation position before exchange than was standard practice in the Section 21 era.

2. The SDLT Surcharge Increase: Fifteen Months In, Still Being Underestimated

From October 2024, the additional dwelling surcharge on residential property purchases was increased from 3% to 5%. This means that a buy-to-let investor acquiring a residential property now pays the standard residential SDLT rates plus 5% across every band.

On a £350,000 acquisition, this represents an SDLT liability of approximately £28,750 — a figure that would have been around £17,750 under the pre-October 2024 regime. The additional £11,000 is simply a higher cost of entry that needs to be reflected in the bid level and the return model.

Fifteen months after the change, it is still not uncommon for investors to arrive at the due diligence stage with an SDLT calculation based on the old rates. It is a straightforward error to make — particularly for investors who have been less active in the market since the change — but it has a direct and meaningful impact on the return calculation. Every acquisition appraisal this year should confirm the SDLT position from the outset, not as an afterthought.

For investors acquiring commercial property, mixed-use property or portfolios, the SDLT position is more complex and the potential tax saving from the correct classification is more significant. The distinction between a residential and a mixed-use transaction can be worth tens of thousands of pounds on the right deal.

3. EPC and MEES: The Clock Is Running

The current minimum EPC rating for privately rented residential property in England is E. The government’s stated trajectory is to raise this to C for new tenancies from 2028 and for all tenancies from 2030. These dates are subject to legislative confirmation, but investors acquiring property now with a medium-term hold period are buying into a window within which EPC compliance will need to be achieved.

The practical issue is not with properties already at C or above. It is with the volume of D and E rated stock — predominantly older Victorian and Edwardian terrace houses, pre-1980s flats and rural property — that remains available in the investment market. Much of this stock is being sold by landlords who are either unwilling or unable to carry out the improvement works required to meet the forthcoming standard.

For investors, this creates a bifurcated opportunity. The D and E rated properties being sold at a discount relative to equivalent higher-rated stock can offer attractive entry prices — but only if the improvement cost to reach C is accurately assessed, reflected in the acquisition price, and achievable given the physical and planning constraints of the specific property. A property that cannot practically be brought to C — due to construction type, heritage restrictions or third-party consent requirements — is not a discounted opportunity. It is a structural impairment.

Before bidding on any D or E rated property this week, investors should be asking: what works are needed to reach C, what will they cost, and who consents to them?

4. The Leasehold and Freehold Reform Act 2024: The Rules Are Still Changing

The Leasehold and Freehold Reform Act 2024 represents the most significant reform to leasehold law in decades. Its provisions are being brought into force in stages, and not all of them are yet effective — which means the landscape for leasehold acquisitions is genuinely in transition in a way that requires investors to verify the current position rather than assume.

The changes that are most directly relevant to investors making acquisitions right now include:

  • Abolition of marriage value in lease extension premiums — once in force, this will materially reduce the cost of extending leases below 80 years, making short-lease acquisitions more financially attractive than they have been for decades. The timing of this provision’s commencement should be confirmed before any short-lease acquisition.
  • The abolition of the two-year ownership requirement — once in force, buyers will be able to exercise the statutory right to extend from day one of ownership, removing the delay that previously required investors to hold for two years before the statutory process could begin.
  • Extension of statutory terms to 990 years — the reform extends the statutory extension term from 90 years to 990 years, providing effective perpetual ownership for extending leaseholders.

The transitional nature of these provisions means that investors need to confirm the current status of each relevant section before building assumptions about lease extension cost or process into an acquisition model. An investor who assumes that marriage value has been abolished and prices a short-lease acquisition accordingly — without confirming that the relevant section is in force — is taking a pricing risk that a brief check would eliminate.

5. Building Safety: An Ongoing and Evolving Liability

The Building Safety Act 2022 and the associated remediation programmes for buildings with unsafe cladding and fire safety defects continue to affect a significant portion of the leasehold flat market. In 2026, the immediate crisis of the most dangerous ACM-clad high-rise buildings is substantially addressed — but the medium-rise building safety programme is at a much earlier stage, and issues around EWS1 assessments, unresolved fire door replacement programmes and compartmentation works continue to affect many urban residential blocks.

For investors acquiring leasehold flats, building safety is not a historical issue that has been resolved. It is an active consideration that needs to be assessed on the specific building before exchange. The key checks remain the same as they have been since the Act came into force — EWS1 status, the remediation programme position, service charge trends and building insurance cost — but the picture is more varied building by building than the headline narrative suggests.

A building that is registered with the Cladding Safety Scheme and has a defined remediation timeline in place is a different risk profile from a building where no assessment has been carried out and the managing agent cannot provide a clear answer on the external wall status. Both types of building appear in the investment market regularly. The difference between them may not be apparent from a viewing — it is only visible from the documentation.

The Investment Conclusion

The five changes described above are not theoretical risks sitting on a future legislative horizon. They are live, in force, and directly relevant to every acquisition decision being made this week. The Renters’ Rights Act is three weeks old. The SDLT surcharge increase is fifteen months in. The EPC clock is running. The leasehold reform is in transition. Building safety remains a case-by-case due diligence exercise.

Taken together, they represent a meaningful shift in what thorough pre-acquisition due diligence needs to cover. The investor who reviews a legal pack through the same lens they used in 2023 is working with an outdated checklist. The acquisition analysis that does not explicitly address each of these five areas is incomplete.

The good news is that none of these changes make UK property investment unworkable. The fundamentals — structural undersupply, strong rental demand, a deep and liquid investment market — remain intact. But the margin for error on individual acquisitions is tighter than it has been. Understanding what you are buying, and what the current regulatory framework means for your specific strategy, is not optional due diligence. It is the foundation of getting the price right.

Bidq provides investor-focused pre-acquisition due diligence reviews that assess legal packs through the lens of today’s regulatory environment — not last year’s. Fast, document-based, and built for investors making live decisions. Explore Bidq’s solicitor-reviewed legal pack review.