Around 5 million homes in England and Wales are leasehold, and the vast majority of those are flats. If you’re buying into a co-op or a shared-ownership scheme, you’re almost certainly dealing with a leasehold agreement, and the rules are changing fast. I’ve been following property law for years, and the one question that comes up more than any other is: “What am I actually signing up for?” The answer used to be straightforward, but the Leasehold and Freehold Reform Act 2024 and the draft Commonhold and Leasehold Reform Bill have rewritten the playbook. Here’s what you actually need to know.
That 5 million figure isn’t just a number — it means roughly one in five homes in England and Wales is tied to a leasehold agreement, with all the fees, restrictions, and frustrations that come with it. If you’re looking at a co-op flat, you’re almost certainly in that group. The good news is that recent reforms have already started to fix some of the worst problems, and more changes are on the way. Before you commit to anything, you need to understand what a lease actually says, what it costs you over time, and what rights you have to change it. I’ve put together a practical apartment-hunting checklist that covers the basics, but this article digs into the lease itself — the part most people skip until it’s too late.
What a leasehold agreement actually means for co-op owners
The most important thing to understand is that a lease isn’t ownership in the way most people think. You own the right to live in the flat for a set number of years, but the building itself — and the land it sits on — belongs to the freeholder. That distinction matters because it determines what you can and can’t do, and how much you’ll pay over time. A co-op adds another layer: you’re typically a shareholder in the co-op, which holds the lease, so your rights and obligations are tied to both the lease and the co-op’s rules. The key term here is enfranchisement — the legal right to buy the freehold or extend your lease.
What I’d tell anyone looking at a co-op flat is to check the unexpired lease term first. If it’s under 80 years, extending it gets expensive fast because of something called marriage value — the increase in property value after the extension. The reforms have made the process cheaper and simpler, but the cost still rises sharply as the term drops. My first move would always be to ask the seller for the lease length and any recent service charge statements. If they hesitate, that’s a red flag. For a deeper look at the financial side, I’d recommend reading our guide on tax deductions for UK homeowners, which covers what you can claim back on service charges and ground rent.
Why the 2024 and 2026 reforms matter for your wallet
The biggest change most people will feel is the abolition of the two-year qualifying period for lease extensions and freehold purchases. Before January 2025, you had to own the property for two years before you could even start the process. That meant if you bought a flat with a short lease, you were stuck watching the value drop while you waited. Now you can act immediately. That’s a massive shift, especially for first-time buyers who might not have known about the old rule until it was too late.
Consider this scenario: you buy a co-op flat with a 79-year lease. Under the old rules, you’d have to wait two years before applying to extend it, by which point the lease would be at 77 years — and the cost of extending would have jumped significantly because marriage value kicks in below 80 years. Now you can apply on day one, potentially saving thousands. The draft Bill also proposes capping ground rents at £250 per year for existing leases, with a further reduction to a peppercorn after 40 years. That’s a direct hit to the kind of ground rent that doubles every decade, which has been a major source of complaints.
What I notice most in my conversations with buyers is that they underestimate how much service charges can eat into their budget. The reforms are tackling that too — new rules will require standardised demand forms and annual reports, making it much harder for freeholders to hide unreasonable costs. If you’re worried about building insurance specifically, our building insurance checklist for UK apartment owners walks through exactly what to look for in your service charge breakdown.
Where people go wrong with leasehold co-op agreements
Ignoring the ground rent escalation clause
This is the single most expensive mistake I see. Many leases include a clause that doubles the ground rent every 10, 15, or 25 years. What starts as £100 a year can become £3,200 after 50 years. The draft Bill proposes capping ground rents at £250 per year, but that’s not law yet — and it only applies to existing leases, not new ones. If you’re buying a new-build co-op flat, check the ground rent schedule carefully. If it escalates, ask the developer to cap it or walk away.
Not checking the service charge history
Service charges are the biggest ongoing cost after your mortgage, yet most buyers only ask what the current charge is. You need to see at least three years of statements. Look for large one-off charges, unexplained increases, and whether the freeholder is using a managing agent with a poor reputation. The new transparency rules will help, but they’re not fully in force yet. If the seller won’t provide the history, that’s a dealbreaker. A tenant and landlord lawyer can review the documents for you and flag anything unusual before you commit.
Assuming commonhold is the same as leasehold
Commonhold is a different form of ownership where you own the flat outright and share ownership of the building with other residents. Fewer than 20 commonhold developments exist in England and Wales, so it’s rare — but the government wants to make it the default for new flats. The draft Bill proposes that conversion from leasehold to commonhold only needs 50% of qualifying leaseholders to agree. That sounds good, but it also means if you’re in a co-op, you could be forced into a new system whether you like it or not. The safeguards are still being worked out, so don’t assume commonhold is automatically better.
Overlooking the right to manage
Since March 2025, the Right to Manage (RTM) has been expanded. Buildings with up to 50% non-residential space (shops, offices) can now use RTM, up from 25%. And in most cases, leaseholders no longer have to pay the freeholder’s legal fees when making a claim. If your co-op is unhappy with how the building is managed, RTM lets you take control without buying the freehold. It’s a powerful tool, but it requires a formal process — you need to form an RTM company and follow the statutory steps. A property lawyer can guide you through that process and help you avoid procedural mistakes that could derail the claim.
→ Scroll right to see all columns
| Reform | Effective Date | What It Changes |
|---|---|---|
| Abolition of 2-year qualifying period | January 2025 | Lease extensions and freehold purchases can start immediately after buying |
| Right to Manage improvements | March 2025 | Mixed-use buildings up to 50% non-residential now eligible; no freeholder legal fees |
| Building safety protections | July 2024 | Costs of interim safety measures can be recovered via Remediation Contribution Orders |
| Ground rent cap (proposed) | Pending legislation | £250 per year cap, reducing to peppercorn after 40 years |
How to navigate a leasehold co-op purchase in 2026
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Get the lease reviewed by a specialist solicitor
This is non-negotiable. A standard conveyancing solicitor might miss lease-specific traps like escalating ground rents, restrictive covenants, or unclear service charge provisions. You need someone who deals with leasehold co-ops regularly. They’ll check the lease length, the ground rent schedule, the service charge provisions, and whether there are any clauses that limit your right to extend or enfranchise. The cost is usually a few hundred pounds, but it can save you tens of thousands. If you don’t have a solicitor yet, you can speak to a real estate lawyer online to get a quick opinion on the key terms before you instruct anyone.
Check the co-op’s financial health
In a co-op, you’re not just buying a flat — you’re buying a share in a company that owns the building. That company needs to be financially sound. Ask for the latest accounts, the reserve fund balance, and any planned major works. The draft Bill requires all commonhold associations to maintain at least one reserve fund for future major works, but that doesn’t apply to leasehold co-ops yet. If the co-op has no reserve fund and the roof needs replacing in five years, you’ll be hit with a large one-off service charge. A financial advisor can help you model the long-term costs and decide whether the co-op is a sound investment.
Understand the conversion risk to commonhold
The government’s consultation on banning new leasehold flats runs until April 2026, and the draft Bill includes a mechanism for converting existing leaseholds to commonhold with 50% leaseholder agreement. If you’re buying into a co-op, you need to know where the other leaseholders stand on this. If a majority wants to convert, you could be forced into a new legal structure with different rules on service charges, voting rights, and dispute resolution. Ask the co-op board if there’s been any discussion about conversion, and check the lease for any clauses that might affect your position. A estate lawyer can explain how the proposed reforms would affect your specific lease.
Plan for the future of ground rent and service charges
The proposed ground rent cap of £250 per year is a significant improvement, but it’s not law yet. If you’re buying a new-build, the developer might still try to include an escalating ground rent. Push back — ask for a peppercorn ground rent (zero) or a fixed, non-escalating amount. For service charges, the new transparency rules will require standardised demand forms and annual reports, but they’re not fully in force. In the meantime, ask the seller for a breakdown of the last three years of service charges and compare them to similar properties in the area. If the charges are significantly higher, ask why. A small claims lawyer can help you challenge unreasonable charges if the freeholder refuses to provide a proper breakdown.
Frequently asked questions about leasehold co-op agreements
Can I be forced out of my co-op flat if the lease ends? ▾
What happens if my co-op wants to convert to commonhold but I don’t? ▾
Does the ground rent cap apply to my existing lease? ▾
Can I sublet my co-op flat under a leasehold agreement? ▾
What’s the difference between a co-op lease and a standard flat lease? ▾
How do I challenge an unreasonable service charge? ▾
Sources and Further Reading
Buying a London flat: 5 mistakes that could cost you thousands — A practical guide to the most common and expensive errors flat buyers make, from lease length to hidden fees.
Is renting robbing you? Expert apartment-buying tips for UK first-timers — A step-by-step comparison of renting versus buying, with advice on navigating the leasehold system as a first-time buyer.
Leasehold toolkit: England. UK Government, 2026.
From leasehold to commonhold: government sets out its blueprint for reform. Dentons, February 2026.
Key legislative and legal updates for 2026. James & Sons, 2026.
