London has one of the highest concentrations of leasehold properties anywhere in the UK. Across Clapham, Brixton and Battersea, a significant proportion of flats — and even some houses — are sold on a leasehold basis. Understanding the difference between leasehold and freehold isn't just useful background knowledge: it's essential for making a sound property purchase. As a chartered surveyor at Clapham Surveyors, I see leasehold-related problems come up in surveys every week.
What Is Freehold?
If you own a property freehold, you own the building and the land it stands on outright — indefinitely. There's no landlord, no ground rent, no service charge (unless you're on a private estate with a management company). You have full control over the property subject only to planning law.
Most houses in the Clapham area are freehold — including Victorian terraces, semi-detached and detached homes. When you buy a Victorian terrace in Clapham Junction, you're buying the freehold.
What Is Leasehold?
If you own a property leasehold, you own the property for a fixed term — the length of the lease — after which ownership reverts to the freeholder. In practice, most residential leases in South London start at 99, 125 or 999 years, so most buyers won't see the lease expire in their lifetime. But the length of the remaining lease matters enormously — particularly for mortgagability and saleability.
As a leaseholder you typically pay:
- Ground rent: An annual payment to the freeholder (increasingly nominal — often £1–£10/year on modern leases).
- Service charge: A contribution to the maintenance and management of shared parts of the building — cleaning, insurance, lifts, external decoration, roof maintenance, etc.
The majority of flats in Clapham and South London are leasehold.
Why Lease Length Matters
The remaining lease term is one of the most important factors when buying a leasehold property. Once a lease falls below 80 years, the cost of extending it increases significantly (because of the "marriage value" calculation under the Leasehold Reform Act). Below 70 years, most mainstream lenders won't mortgage the property. Below 60 years, selling becomes very difficult.
When we carry out surveys on leasehold properties for our clients at Clapham Surveyors, we always flag the remaining lease length and flag any concerns about serviceability, saleability or the ability to extend. Read more: RICS Red Book valuations for lease extensions.
Lease Extensions and Freehold Purchase
If you own a leasehold flat and the lease is getting short, you have statutory rights to extend it — or in some cases to collectively buy the freehold with your fellow leaseholders. This is a complex area involving formal valuation, legal processes and negotiation. Our RICS Red Book valuations are regularly used in lease extension premiums.
A lease extension adds years to the lease and (since the Leasehold Reform (Ground Rent) Act 2022) reduces ground rent to peppercorn (zero). This significantly increases the value and mortgagability of the property.
What This Means for Your Survey
When we survey a leasehold flat, we pay particular attention to:
- The condition and maintenance of communal areas and shared services
- The roof — which is usually the freeholder's responsibility but directly affects you if it leaks
- Signs of deferred maintenance — indicating a poorly managed or under-funded service charge
- Any planned major works, which could result in a large one-off service charge ("major works levy")
This information is covered in our Level 2 home surveys and Level 3 building surveys.
Case Study: Short Lease Surprise in Clapham
A client was purchasing a beautiful garden flat near Clapham Common. The estate agent had described it as having a "long lease". Our Level 2 survey noted the lease term as 72 years. We advised the client that this was approaching the critical 80-year threshold, that her chosen lender might struggle to mortgage it, and that extending the lease before purchase would be significantly cheaper than after. She negotiated an extended lease as part of the purchase conditions and saved approximately £12,000.
Frequently Asked Questions
Not inherently. Most London flats are leasehold and buyers purchase them without problems every day. The key is understanding what you're buying — including the lease length, ground rent, service charges and any planned major works. A proper survey and legal advice will highlight any issues before you commit.
In some cases, yes. If you own a flat in a building with at least two flats and at least half of the leaseholders agree, you may have the right to collectively buy the freehold (collective enfranchisement). This is a complex process involving formal valuation and legal work. Our team can advise on the valuation element.
Since 2022, ground rent on new leases is legally capped at zero (peppercorn). For older leases, ground rent above £250/year (£1,000 in Greater London) can trigger protected tenancy rules that complicate mortgages. Any lease with ground rent that doubles or increases significantly above RPI should be examined carefully by your solicitor.
Summary
Whether you're buying a freehold Victorian terrace in Clapham Junction or a leasehold flat near Clapham Common, getting a proper survey is essential. At Clapham Surveyors, our chartered surveyors understand the nuances of South London property — including the leasehold issues that can catch buyers out. Contact us for a free, no-obligation quote.
Also read: RICS Red Book Valuation | Level 2 vs Level 3 Survey
