Leasehold conveyancing negligence: short lease, ground rent and service charges my conveyancer missed

Buying a leasehold flat or house means buying a lease: a document that sets how long you own the property for, what you pay the landlord each year, what you contribute to the building, and what you may and may not do. A conveyancer who does not read that document properly, or does not explain it, can leave you with a home that is expensive to extend, hard to mortgage, or impossible to sell on the terms you expected.

This guide goes deeper on leasehold purchases. For the wider picture of conveyancing negligence, start with what conveyancers commonly get wrong.

What the conveyancer had to do

On a leasehold purchase the seller completes the Law Society's property information form (TA6) and a leasehold information form (TA7), and the landlord or managing agent supplies a management pack: service charge accounts and budgets, buildings insurance, planned works and reserve fund details. The conveyancer acting for you, and usually for your lender too, is expected to:

• read the lease itself, not just the summaries;
• check the lease against your lender's requirements, which each lender sets out in the UK Finance Mortgage Lenders' Handbook, including the minimum unexpired term and conditions on ground rent it will not accept;
• raise enquiries where the management information is incomplete; and
• report in plain terms on the term, the rent, the service charge, and any restriction that conflicts with what you told them you intended to do.

The short lease

The unexpired term is the number of years left on the lease. It matters for two reasons.

First, lending. Lenders set minimum unexpired terms, and short leases are often unmortgageable. That limits your future buyers to cash purchasers and can depress the price.

Second, marriage value. A flat owner who qualifies can extend the lease under the Leasehold Reform, Housing and Urban Development Act 1993, which currently gives a new lease for the remaining term plus 90 years at a peppercorn rent (s.56). The premium is calculated under Schedule 13. Where the unexpired term at the date of the claim is more than 80 years, marriage value is taken to be nil (Sch 13, para 4(2A)); at 80 years or below, the landlord is entitled to half of it, and the premium rises sharply. A lease bought at 82 years that crosses the threshold soon after is a classic trap.

Since 31 January 2025, the requirement to have owned the flat for two years before claiming a statutory extension has been removed (s.27 Leasehold and Freehold Reform Act 2024). The same Act provides for abolishing marriage value and changing how premiums are calculated, but those valuation reforms are being brought into force in stages and depend on regulations. At the date of this guide (October 2026), the government's published position was that it intended to bring them into force as soon as possible; until it does, the 80-year threshold continues to apply. How a change in the law after you bought affects what you can recover is a question for a solicitor.

Ground rent

Ground rent is the annual sum payable to the landlord. Problems arise where the lease provides for the rent to double at fixed intervals, to rise in line with an index without a cap, or to start high. Lenders may refuse leases with such terms, and buyers discount them.

The Leasehold Reform (Ground Rent) Act 2022 restricts ground rent to one peppercorn a year for most new long residential leases granted for a premium on or after 30 June 2022 (1 April 2023 for retirement homes). It does not alter the ground rent in leases granted earlier. If you bought into an older lease, the rent review clause is what it always was, and the conveyancer's job was to find it and explain it.

Service charges and major works

Leaseholders usually pay a share of the cost of maintaining and insuring the building. A purchase can go badly wrong where the management pack showed planned major works — a new roof, cladding, lift replacement — or a dispute or arrears, and the conveyancer did not report it, or did not ask whether works had been proposed.

In England, landlords must consult leaseholders before carrying out qualifying works where any one leaseholder's contribution will exceed £250, or their recovery is capped at that amount unless the tribunal dispenses with consultation (s.20 Landlord and Tenant Act 1985 and regulation 6 of the Service Charges (Consultation Requirements) (England) Regulations 2003). A consultation notice already issued before you bought is exactly the kind of information a conveyancer should find and pass on.

Restrictions in the lease

Leases often control how the property is used. Common restrictions include:

• Subletting — an outright ban, or a requirement for the landlord's consent, which matters if you bought to let.
• Pets — a ban, or consent required.
• Alterations — consent needed for structural work, new flooring, or knocking through.
• Use — no business use, or a restriction to a single private dwelling.

If you told your conveyancer you intended to let the flat, keep a dog, or reconfigure the layout, and the lease prevents it, a failure to warn you is a strong indicator of breach.

Causation and loss

You need to show what you would have done if properly advised — not bought, negotiated a lower price, or insisted the seller extend the lease first — and what the failure cost you.

The usual measure is the difference between what you paid and what the property was worth on its true terms at the date of purchase. The cost of a lease extension, or of varying an onerous ground rent clause, is often the best evidence of that difference, and may sometimes be the measure itself. It is not automatically recoverable in full: a court asks what you lost because of the advice, not what it costs to make the lease ideal. Unreported major works can be measured by the extra service charge you would not have taken on, or by the price reduction you would have negotiated. A valuer's evidence usually decides the figure.

The pre-action protocol governs how a claim is started. Time usually runs six years from the negligent advice or three years from when you knew or could have known the relevant facts, subject to a 15-year longstop (ss.2, 5, 14A and 14B Limitation Act 1980) — see professional negligence time limits.

What a solicitor will want from you

• The lease, the title register for the flat and for the freehold, and the report on title.
• The TA6, TA7 and management pack, and the replies to any further enquiries.
• What you told the conveyancer about your plans for the property, in writing if possible.
• Ground rent and service charge demands since you bought, and any consultation notices.
• Any lease extension valuation, premium quote or landlord's response.
• Evidence of the problem surfacing: a buyer withdrawing, a lender declining, or a demand for major works.

Run the free case check

This guide is general information about the law of England and Wales. It is not legal advice. Leasehold law is being reformed in stages, so check the current position on any rule before relying on it.