London New-Build Buyers: EPC 2030 Rules and Leasehold Reform

Buying a London new-build has never been only about the floor plan and the asking price in front of you. The real test of judgement is whether the home can comfortably weather the regulatory shifts of the next decade. In 2026, the United Kingdom is advancing two regulatory tracks that are reshaping the housing market at the same time: the Warm Homes Plan, which raises energy efficiency (EPC) standards, and leasehold reform, which is redrawing the map of property tenure. For buyers looking overseas, understanding these two tracks is the same as seeing — years in advance — how resilient a property will really be. At IREIS Properties, we believe that rather than chasing the discount of the moment, a discerning buyer should bring the regulatory future into the decision itself.

Why 2026 buyers must price in the regulatory future

For a long time, overseas buyers assessing London property focused on location, rental yield and completion date. From 2026, a deeper question rises to the surface: will this home lose value — or even become impossible to let — a decade from now because it cannot keep pace with new regulation? This is not alarmism. From 2030, rented homes that fall short on energy efficiency will face real restrictions on letting, and apartments with unfavourable tenure structures may look less attractive as reform unfolds.

For Taiwanese and overseas Chinese buyers accustomed to a freehold mindset, this framing matters all the more. In Taiwan, Hong Kong and Singapore, the idea of buying a fixed-term right to occupy rather than the land itself can feel unfamiliar, and the obligation to fund energy improvements years after completion is rarely part of the conversation back home. A home that looks cheap today, yet carries the burden of heavy future refurbishment costs, is no longer cheap. Conversely, a new-build that already meets the standards of the future is the kind of asset genuinely worth holding for the long term.

This guide unpacks both regulatory tracks and returns to a checklist you can use the moment you view a property. It deliberately avoids quoting a single tax figure you should not rely on, and instead points you to the official sources and the professional advisers who can confirm your own position. The aim is not to alarm but to equip: once you know which questions to ask, the regulatory future stops being a source of anxiety and becomes simply another column in your due diligence.

The EPC and the 2030 rules: will your home make the cut?

The Energy Performance Certificate (EPC) rates the energy performance of every home in the UK, from A (best) to G (worst). On 21 January 2026, the UK government confirmed the direction of its Warm Homes Plan: privately rented homes in England and Wales must reach EPC band C (or an equivalent standard) by 1 October 2030 in order to continue being let, unless an exemption applies. The plan is backed by up to £15 billion of public funding; the framework is set out in the UK government’s official minimum energy efficiency standard guidance.

The government has paired this with safeguards: there is a cost cap — around £10,000 per property — on the improvements a landlord must fund, and where a property still falls short after that has been spent, the landlord may register a 10-year exemption and continue letting. On enforcement, local authorities may levy penalties of up to £30,000 per breach, per property. In addition, from October 2026 the current single-metric EPC assessment is expected to move to a multi-metric model (covering the fabric performance of the building, among other factors). In practice this means a future certificate will look more closely at how well a building holds heat through its walls, roof, windows and airtightness, rather than relying on a single headline score. For owners of older rental stock this signals a significant potential refurbishment bill; but for buyers who choose the right property, it is a dividing line that separates the strong from the weak.

It is worth being precise about scope. The 2030 EPC C requirement is targeted at the private rented sector, so it bites hardest on landlords rather than on owner-occupiers, who are not compelled to upgrade in the same way. But the direction of travel matters even if you intend to live in the home yourself: an energy-efficient property is cheaper to run, more comfortable through a British winter, and easier to sell to the next buyer — who may well want to let it. Regulation aimed at landlords today tends to set the market’s expectations for everyone tomorrow.

The structural edge of new-builds: why EPC B is a long-term moat

This is precisely where new-builds hold a natural advantage. Modern UK new-builds incorporate high-specification insulation, contemporary heating systems and strong airtightness from the design stage, and typically achieve EPC band B — already better than the EPC C threshold required for 2030. In other words, while owners of older homes scramble to fund improvements before the 2030 deadline, buyers holding a new-build already sit safely inside the regulatory line. When IREIS Properties assesses any property for a client, we treat energy efficiency as a long-term moat rather than a minor detail.

The value of that moat shows up in three ways. First, lower energy consumption means lower day-to-day running costs — attractive for owner-occupiers and tenants alike. Second, a property that meets future standards faces a wider pool of buyers on resale, with better liquidity. Third, for buy-to-let buyers, homes that fall short on energy efficiency will exit the legal lettings market after 2030, so compliant homes gain in relative competitiveness. Energy efficiency is a bonus today; by 2030 it becomes the dividing line for the right to let at all.

Leasehold reform: how the 2026 draft is redrawing tenure

The second regulatory track is the UK’s long-running leasehold reform. Most UK apartments are held as leasehold — the buyer owns a right to occupy for a fixed term rather than the land itself, and pays ground rent to a landlord. On 24 May 2024, the Leasehold and Freehold Reform Act 2024 received Royal Assent; one of its provisions took effect on 31 January 2025, abolishing the old rule that required owners to hold a property for two years before extending the lease or buying the freehold, so owners can now act sooner and more cheaply.

The next step is more far-reaching. On 27 January 2026 the government published a draft Commonhold and Leasehold Reform Bill, proposing to make commonhold the default tenure for new flats, to ban most new flats from being sold as leasehold, and to cap existing ground rents at £250 a year, falling to a peppercorn (a token amount) after 40 years. It is important to note that this bill remains at the draft stage: the government expects to introduce an amended version to Parliament in autumn 2026, aiming for Royal Assent by mid-2027; the latest progress is tracked by the House of Commons Library leasehold reform briefing. Because the detail may still change, IREIS Properties advises buyers to take advice from a qualified UK conveyancing solicitor on the specific tenure terms of any property before exchanging contracts.

What does commonhold mean in plain terms? It is a form of ownership in which you own your flat outright and, together with the other flat owners, jointly own and manage the building’s common parts through a commonhold association — with no landlord and no lease clock ticking down. For buyers from a freehold culture, it is conceptually much closer to owning the asset itself. While the reforms work their way through Parliament, the practical takeaway is straightforward: do not treat a long lease as a problem in itself, but do read the ground rent and lease-length terms carefully, and understand how any future reform might apply to your specific purchase. A modern new-build sold today on a 999-year lease with a low or peppercorn ground rent already sidesteps most of the historic concerns the reforms are designed to fix.

Folding both tracks into your viewing checklist

However complex the regulation, at the point of viewing it comes down to a handful of clear questions. When assessing any London new-build, work through them one by one: what is the property’s current EPC rating, and has it reached B or C? What is the specification of the building fabric, insulation and heating system? If held as leasehold, how many years remain on the lease, what are the ground rent terms, and is the rent fixed or escalating? What is the structure and historical trend of the service charge? The answers to these questions directly determine the property’s cost and eligibility a decade from now.

It also helps to put the questions in order of weight. EPC rating and the heating and insulation specification tell you about running costs and 2030 compliance; lease length and ground rent terms tell you about tenure security and resale; the service charge tells you about the ongoing cost of living there. Taken together they sketch the true cost of ownership over a ten-year hold — a far more honest figure than the headline price. A property that scores well on all three is rarely the cheapest on day one, but it is often the most resilient over the decade that actually matters.

The key point is this: these are facts, not sales talk. The actual EPC rating, lease term and ground rent terms of every development should be verified case by case with the developer or solicitor, never inferred from impression. The operating standard at IREIS Properties is that every figure a client sees can be traced to a single source — same-source, transparent and verifiable data is the steadiest foundation for buying across borders. Every box on the viewing checklist should be filled in by a document, not by imagination.

The right mindset on tax and cost: tools and professional advice

Beyond regulation, buyers often ask about the overall tax cost. Two correct mindsets are worth establishing. First, Stamp Duty Land Tax (SDLT) has a complex structure — base rates, the overseas-buyer surcharge and the additional-property surcharge layered together — and is easy to miscalculate; so never estimate it from a formula yourself, and instead use our UK stamp duty calculator to work out your exact liability. Second, on the tax treatment of rental income, since the 2020/21 tax year individual landlords can no longer deduct mortgage interest as a fully allowable expense; instead, relief is given as a 20% basic-rate tax credit, and higher-rate taxpayers receive materially less relief than under the old system.

For this reason, more investors now weigh up whether to hold through a limited-company structure. But tax planning is highly individual, and there is no one-size-fits-all answer. For further reading, see our London new-build first-time buyer guide and our London buy-to-let landlord guide. Whether it is EPC refurbishment costs, ground rent changes or rental tax, the final step is always to consult a qualified UK tax and conveyancing professional before deciding.

The role of IREIS Properties: translating complex regulation into your decision language

Back to the original question: will a property make it through the next decade? The answer is hidden in the detail of the EPC rating, the tenure structure and the cost breakdown. For buyers far overseas, that detail often sits behind a double distance — of language and of an unfamiliar system. As a London-based, trilingual local advisory team, what IREIS Properties does is translate this complex regulation into a language you can act on: every fact has a source, and every recommendation returns to your long-term interest.

We do not chase the line of the moment; we help you see how resilient a property will be a decade from now. If you are weighing up a London new-build and want to pick a home that genuinely stands the test of time amid the twin shifts of the 2030 energy rules and leasehold reform, you are welcome to get in touch with us, or browse our selected London listings first. In a decision worth many millions, composure comes from seeing far enough ahead.