If you’re renting commercial space in the UK, the ground is shifting beneath your feet. A wave of legal changes is heading our way in 2026, and it will reshape everything from how much you pay in business rates to whether your landlord can ever lower your rent. I’ve been following these developments closely, and what strikes me is how many tenants and landlords alike are only dimly aware of what’s coming. The new rules touch on energy certificates, rent review clauses, inheritance tax relief, and even how community assets are protected. Here’s what you actually need to know.
These aren’t minor tweaks. The commercial rental landscape is about to change in ways that will directly affect your costs, your lease terms, and your long-term planning. Whether you’re running a shop, a workshop, or an office, understanding these shifts now could save you thousands. A smart leak detector like the X-Sense Wi-Fi Water Leak Detector is a small investment that can prevent a big headache — but the bigger picture is about knowing your rights and obligations before the law changes.
What the 2026 commercial property law changes actually mean
The most important thing to grasp is that these changes aren’t all happening at once, and they don’t all affect you the same way. The term you’ll hear most often is “Energy Performance Certificate” or EPC. Right now, an EPC gives your property a single rating from A to G, and it lasts ten years. Under the new rules expected in the second half of 2026, that single score will be replaced by a broader set of metrics — things like fabric efficiency, heating efficiency, smart-technology readiness, and actual carbon emissions. The certificate will also need to be renewed more often, and you’ll have to keep a valid one for the entire duration of your tenancy, not just when you move in or renew.
What I’d do right now is check your current EPC expiry date. If it’s due to run out in 2026 or 2027, you’ll likely be among the first to face the new, stricter requirements. And if you’re in a listed building, pay close attention — the government is consulting on bringing all listed buildings into the EPC and Minimum Energy Efficiency Standards (MEES) regime for the first time. That could mean significant upgrade costs if your property currently falls outside the rules.
Why the 2026 shake-up matters for your bottom line
Let’s talk about money, because that’s where this really hits home. Business rates are being revalued from 1 April 2026, based on rental values as of 1 April 2024. That alone could change your bill significantly. But the bigger story is the new five-tier multiplier structure. Properties with a rateable value below £500,000 — which covers most retail, hospitality, and leisure premises — will benefit from lower multipliers. Properties at or above £500,000 will face a higher “high-value” multiplier. The idea is to support the high street by making larger premises pay more.
Here’s a scenario: imagine you run a small café with a rateable value of £150,000. Under the new structure, you’d pay a lower multiplier than a large department store with a rateable value of £2 million. That’s good news for you. But if you’re the owner of that department store, your rates bill could jump significantly. The government has confirmed this structure in the November 2025 Budget, so it’s locked in.
What I notice is that many tenants don’t realise they can challenge their rateable value through the Check, Challenge, Appeal process. If your property’s rental value has dropped since the April 2024 valuation date — for example, because of a downturn in your area — you may be able to get your rates reduced. It’s worth looking into, especially if you’re near that £500,000 threshold. A good understanding of service charges can also help you spot where you might be overpaying.
Where people go wrong with the 2026 changes
The most common mistake I see is assuming the old rules will keep applying. They won’t. Here are the four biggest traps I’m watching.
Ignoring the EPC maintenance requirement
Under current rules, you only need an EPC when you grant a new lease or renew an existing one. From 2026, you’ll need to maintain a valid EPC throughout the entire tenancy. If your certificate expires mid-lease and you don’t renew it, you could face penalties. The government is also introducing stronger enforcement measures and increased fines. My advice: put a reminder in your calendar for six months before your EPC expires, and budget for the re-certification cost.
Assuming upward-only rent reviews will always apply
The English Devolution and Community Empowerment Bill, published in July 2025, proposes banning upward-only rent reviews in new commercial leases. This is a huge deal. Currently, most commercial leases have clauses that allow rent to go up but never down. If the ban passes — and it’s now at the committee stage in the House of Lords — new leases and renewals would have to allow for downward reviews too. That could mean lower rents for tenants, but it might also lead to shorter lease terms and fixed-rate increases becoming the norm. If you’re negotiating a lease now, don’t assume the old rules will apply by the time you sign.
Overlooking the inheritance tax relief changes
From 6 April 2026, Business Property Relief (BPR) and Agricultural Property Relief (APR) will combine into a single £1 million allowance at 100% relief. Any qualifying value above that gets only 50% relief, which means an effective 20% inheritance tax charge on the excess. If you own a commercial property as part of your business or estate, this could significantly increase your tax bill. Shares in unlisted companies, including AIM-listed shares, will also receive only 50% relief. If you’re planning your estate, this is a change you need to factor in now.
Not understanding the new community asset rules
The same Bill that targets rent reviews also proposes major changes to Assets of Community Value (ACVs). The definition of community value would widen to include properties that contribute to economic wellbeing — not just social or cultural value. That means pubs, local stores, and allotments could qualify. A new “sporting asset” category would cover outdoor sports grounds with spectator facilities. Crucially, these designations wouldn’t expire, and community groups would get a “preferred buyer” status, allowing them to block a sale for up to 18 months if they offer market value. If you’re selling a commercial property, this could delay your sale significantly.
→ Scroll right to see all columns
| Change | Effective date | Who it affects most |
|---|---|---|
| New EPC metrics and shorter validity | H2 2026 | All commercial landlords and tenants |
| Business rates revaluation and new multipliers | 1 April 2026 | Retail, hospitality, leisure (under £500k benefit; over £500k pay more) |
| Ban on upward-only rent reviews | Late 2026/2027 (proposed) | Tenants and landlords of new commercial leases |
| BPR and APR combined allowance | 6 April 2026 | Business owners and estate planners |
What I’d do if I were in your shoes: don’t wait for the changes to take effect. Start reviewing your lease terms, your EPC status, and your business rates valuation now. If you’re near the £500,000 threshold, consider whether a challenge could save you money. And if you’re planning to sell a property that might qualify as a community asset, factor in the potential 18-month delay.
Writing about topics like this takes real time and research. If you buy something through an Amazon link on this page, I may earn a small commission — at no extra cost to you. It’s one of the things that makes it possible to keep BritWealth free to read. I only link to products that are genuinely relevant to the article.
How to prepare for the 2026 commercial property changes
Preparation doesn’t have to be overwhelming. Break it down into these four practical actions.
Check your EPC and plan for re-certification
Find your current EPC and note the expiry date. If it’s due to expire in 2026 or 2027, you’ll likely need a new certificate under the updated rules. The new EPC will show multiple metrics, so your building might score differently than before. If you’re in a listed building, watch for the consultation outcome — you may be brought into the regime for the first time. Budget for potential energy efficiency upgrades now, rather than scrambling later. A clear guide to service charges can help you understand what costs you can pass on and what you can’t.
Review your business rates valuation
The revaluation takes effect on 1 April 2026, based on rental values as of 1 April 2024. If your property’s rental value has dropped since then — for example, because of a local downturn or changes in your area — you may be able to challenge your rateable value through the Check, Challenge, Appeal process. This is especially important if you’re near the £500,000 threshold, because crossing it means moving into the higher multiplier bracket. Even a small reduction could save you thousands.
Negotiate your lease with the ban on upward-only reviews in mind
If you’re negotiating a new commercial lease, don’t assume upward-only rent reviews will be available. The proposed ban applies to new leases and renewals, and it’s likely to pass in late 2026 or 2027. That means you should consider alternative rent review mechanisms, such as fixed-rate increases or index-linked adjustments. If you’re a tenant, this could be an opportunity to negotiate a more flexible lease. If you’re a landlord, think about how the ban might affect your property’s long-term value.
Plan your estate around the new inheritance tax relief rules
From 6 April 2026, the combined BPR and APR allowance is £1 million at 100% relief. Anything above that gets only 50% relief, creating an effective 20% inheritance tax charge on the excess. If you own commercial property as part of your business or estate, review your inheritance tax planning now. Consider whether restructuring your ownership or transferring assets before the deadline could reduce your liability. A financial advisor can help you model the impact.
-
1Find your EPC and note the expiry dateCheck the government’s EPC register. If it expires in 2026 or 2027, you’ll need a new certificate under the updated rules. Budget for re-certification and possible upgrades.
-
2Check your business rates valuationLook up your rateable value on the Valuation Office Agency website. If it’s near £500,000, consider challenging it through the Check, Challenge, Appeal process before the April 2026 revaluation.
-
3Review your lease termsIf you’re negotiating a new lease, discuss alternative rent review mechanisms. The ban on upward-only reviews is coming, so plan for a more flexible arrangement.
-
4Review your inheritance tax planningIf you own commercial property as part of your business or estate, model the impact of the new £1 million allowance. Consider restructuring before April 2026.
Frequently asked questions about the 2026 commercial property changes
Will the ban on upward-only rent reviews apply to existing leases? ▾
What happens if my EPC expires mid-tenancy under the new rules? ▾
Can I challenge my business rates valuation before the April 2026 revaluation? ▾
Does the new inheritance tax relief allowance apply to shares in my company? ▾
What counts as a ‘sporting asset of community value’ under the new rules? ▾
The 2026 changes are significant, but they’re not something to panic about. The key is to start preparing now. Check your EPC, review your business rates valuation, understand how the rent review ban might affect your next lease, and update your inheritance tax planning if you own commercial property. If this was useful, you might also want to read How to Find the Right Retail Lease in the UK.
Sources and Further Reading
From Warehouse to Workspace: Creative Commercial Conversions in the UK — A practical look at converting commercial spaces for new uses, relevant if you’re considering a change of use under the new rules.
A Practical Guide to Upcoming Commercial Property Law Changes in 2026. Longmores Solicitors, 2025.
Commercial Property Law Changes Coming in 2026. SO Legal, 2025.
UK Real Estate Sector: 2026 and Beyond. Charles Russell Speechlys, 2025.
