Almost three-quarters of property investors now name retrofitting existing buildings as their primary environmental strategy, according to the latest ESG Property Investor Survey. That figure tells you something important: sustainability is no longer a niche concern for the UK property market. It has become a central factor in how buildings are valued, financed, and insured.
I’ve been watching this shift for a while now, and what strikes me is how quickly the conversation has moved from “should we?” to “how fast can we?” The worry about sustainability among industry professionals has actually fallen from 67% to 55%, according to the Emerging Trends in Real Estate Report 2026. That drop doesn’t mean people care less. It means these requirements are becoming embedded in everyday business models. The question is what this means for you — whether you own a home, rent out a property, or invest in commercial space. Here’s what you actually need to know.
What sustainability means for property value and risk
Let me be clear about one thing from the start. When people talk about “sustainability” in property, they’re not just talking about saving the planet. They’re talking about whether a building will hold its value, attract tenants, and qualify for financing in the years ahead. The term you’ll hear most often is Energy Use Intensity, or EUI. It measures how much energy a building uses per square metre per year. It has become the go-to metric for performance, though the Knight Frank survey notes that ambiguity and mismatch in measurement have held it back.
What I’d do if I owned a property right now is start tracking its energy performance, even informally. You don’t need a full audit to know whether your windows are draughty or your heating system is outdated. Those are the things that will show up on an EPC and affect your ability to sell or rent. The changing landscape of UK property investment means that what was acceptable five years ago may not be acceptable in five years’ time.
Why this shift matters for owners, landlords, and investors
The practical consequences of this shift are already showing up in three areas: operating costs, insurance, and access to finance. One-third of respondents in the ESG Property Investor Survey cite higher operating costs due to the frequency and intensity of weather events. A quarter report higher capital expenditure for the same reason. The first half of 2025 may have been the costliest ever for natural disasters, and that trend is only expected to increase.
Consider a landlord with a portfolio of older flats. If those flats have poor energy performance, the landlord faces higher energy bills, which tenants may push back on. The building may also attract higher insurance premiums, especially if it has cladding or other fire safety concerns. The Building Safety Act 2022 has already introduced mandatory reporting of fire safety risks, and the courts have been interpreting the Act in ways that protect leaseholders. That means property owners who fail to comply could face increased liability.
What I notice is that many owners underestimate how quickly lenders are changing their criteria. For 83% of respondents to the ULI/PwC study, ESG credentials are now the second most important factor for accessing finance, up from 75% the year before. If you’re planning to remortgage or refinance in the next few years, your property’s energy performance could直接影响 the terms you’re offered. A property in the commuter belt that is energy-efficient may hold its value better than one that isn’t, simply because buyers and lenders are prioritising it.
Where property owners get tripped up
I see the same mistakes coming up again and again. Here are the ones that cost people the most.
Waiting for regulation to force their hand
The most common error is doing nothing until a legal deadline arrives. The government has re-proposed more stringent energy efficiency standards for the private rented sector, but the results of the consultation are still pending. Some owners are treating this delay as a reason to wait. That’s a mistake. The Renters’ Rights Act 2025, expected to be fully implemented by 2026, will abolish no-fault evictions and introduce longer-term tenancies. Landlords who wait until the last minute to improve energy performance will find themselves with less flexibility to adjust rents or remove problematic tenants. The time to act is now, while you still have control over the timeline.
Ignoring the link between sustainability and insurance
Insurance premiums are rising for buildings with poor energy performance or fire safety concerns. The Building Safety Act has already led to higher premiums for properties with cladding. But the issue goes beyond cladding. Properties in areas prone to flooding or extreme weather are seeing higher costs too. The Knight Frank survey notes that one-third of investors cite higher operating costs due to weather events. If you own a property, check your insurance policy now. If your building has any known issues, address them before your renewal date, not after.
Overlooking the commercial lease trap
For commercial property owners, the proposed ban on upwards-only rent reviews, expected in early 2027, will change the economics of leasing. Tenants will benefit from more predictable rent, but landlords will need to adjust their income expectations. The VWV analysis suggests this may lead to shorter-term leases and a move to longer-term valuations. If you own commercial property, now is the time to review your lease structures and consider how the ban will affect your rental income. A real estate lawyer can help you understand how these changes apply to your specific situation.
Assuming EPC reform won’t affect them
Around 39% of non-domestic EPCs lodged in the past decade list electricity as the main fuel source. For offices, that figure is 35%. That means a significant portion of commercial buildings still rely on gas or other fossil fuels. The proposed EPC reforms, which were put forward in late 2024, would raise the minimum standard. Owners who haven’t started planning for electrification may find themselves scrambling when the rules change. A smart approach is to begin with a professional energy audit. A property lawyer can also advise on how these changes interact with lease obligations and service charge provisions.
→ Scroll right to see all columns
| Reform | Expected Impact | Timeline |
|---|---|---|
| Renters’ Rights Act | Abolishes no-fault evictions, introduces longer tenancies | Full implementation by 2026 |
| Ban on upwards-only rent reviews | Limits rental income growth for commercial landlords | Early 2027 |
| Leasehold reform | Ground rents set to zero for new leases, increasing buyer demand | Ongoing |
| EPC reform (proposed) | Higher minimum energy standards for rented properties | Consultation pending |
How to prepare your property for the sustainability shift
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The good news is that you don’t need to overhaul your entire property overnight. Here are the practical steps that will make the biggest difference.
Start with an energy audit and a clear plan
You can’t improve what you don’t measure. A professional energy audit will give you your current EUI and identify the biggest sources of waste. From there, prioritise the improvements that offer the best return. Insulation and draught-proofing are usually the most cost-effective first steps. Replacing an old boiler with a heat pump is a bigger investment but may be necessary to meet future standards. The Knight Frank survey found that just over a quarter of investors look for fully electrified heating and cooling systems. That number will only grow. If you’re planning major work, consider installing a Wi-Fi water leak detector as part of the upgrade — it’s a small addition that can prevent costly water damage and improve your building’s resilience.
Review your lease agreements and insurance policies
If you’re a landlord, your lease agreements need to reflect the new regulatory landscape. The London Trocadero case showed that poorly drafted leases can leave landlords unable to recover insurance costs. Tenants are now scrutinising historic insurance invoices and requesting supporting evidence. Make sure your lease clearly defines what counts as “insurance rent” and what doesn’t. A tenant landlord lawyer can review your existing agreements and flag any weak points before they become disputes.
Plan for electrification and EV charging
Battery electric vehicles accounted for 22.7% of new car registrations in 2025, according to the SMMT. That’s still short of the 28% Zero Emission Vehicle mandate, but the trend is clear. Properties with EV charging points are becoming more attractive to tenants and buyers. If you own a multi-unit building or commercial property, installing charging infrastructure now can future-proof your asset. The cost is not trivial, but it adds tangible value. A financial advisor can help you model the return on investment and decide whether to pass the cost through service charges.
Prepare for the emerging challenge of grid capacity
Access to power is an emerging challenge, cited by 43% of ULI/PwC respondents, up from 40% the previous year. As more buildings electrify their heating and add EV charging, the grid may struggle to keep up. If you’re planning a major development or retrofit, check with your local distribution network operator early. You may need to upgrade your connection, which can take months or years. This is one of those underreported issues that could catch a lot of property owners off guard. Don’t assume the grid will have capacity when you need it.
- 1Get an energy auditHire a qualified assessor to measure your building’s current EUI and identify the most cost-effective improvements. This gives you a baseline to work from.
- 2Review your legal documentsHave a property lawyer check your leases, insurance policies, and service charge provisions. Ensure they are drafted to handle the new regulatory requirements.
- 3Prioritise high-impact upgradesStart with insulation and draught-proofing. Then move to heating system electrification and EV charging. Tackle the biggest energy losses first.
- 4Check grid capacity earlyContact your local distribution network operator before starting any major electrification project. Grid connection upgrades can take months, so plan ahead.
Frequently asked questions
Will my property lose value if it has a low EPC rating? ▾
Do I need to install solar panels to meet new standards? ▾
What happens if I ignore the new building safety rules? ▾
Will the ban on upwards-only rent reviews affect residential leases? ▾
How do I find out if my local grid has capacity for EV charging? ▾
What to do next
The shift towards sustainability in the UK property market is not a trend that will fade. It is being driven by regulation, lender requirements, and tenant expectations all at once. The single most important thing you can do is get a professional energy audit for your property. That one step will tell you exactly where you stand and what needs to change. From there, you can prioritise improvements, review your legal documents, and plan for electrification. The owners who act now will have the most options. Those who wait will find the market has moved without them.
If this was useful, you might also want to read why so many UK properties are left vacant.
Sources and Further Reading
How to buy abandoned properties in the UK and restore them for profit — A practical guide for investors looking at renovation projects with sustainability in mind.
More of the same: Sustainability & real estate for 2026. Knight Frank, 2025.
2026 Property Industry Outlook: Key Reforms and Market Impact. VWV, 2025.
