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Lease Extension Specialists · London

Is your lease approaching 80 years?

Every year your lease shortens, the cost to extend rises and your property becomes harder to sell. We act for leaseholders before it becomes a crisis.

Cost to extend by lease length
90 years
~£8k
82 years
~£18k
80 years
~£28k
78 years
~£45k
75 years
~£65k

Illustrative figures for a £400,000 London flat. The sharp increase below 80 years is caused by marriage value: an additional sum equal to 50% of the uplift in your property's value, which becomes payable to the freeholder the moment your lease crosses this threshold.

Every year you wait, it costs you more

Every single year your lease shortens, the premium to extend increases. This is not a gradual drift. It accelerates. A lease that costs £18,000 to extend today could cost £35,000 in three years. That money does not come back.

Beyond the cost, a short lease directly erodes the value of your property. Buyers discount heavily for short leases. Mortgage lenders impose restrictions, and below certain thresholds, refuse to lend altogether. The moment your lease becomes a problem for a buyer, it becomes a problem for your sale.

When a lease drops below 80 years, marriage value is triggered: an additional sum equal to 50% of the uplift in your property's value, paid to the freeholder. On a London flat worth £400,000, this can add £20,000–£50,000 or more to the cost of extending.

The single best thing you can do to protect your property's value is act before it becomes urgent. We will tell you exactly where you stand.

85–100 years
Act when ready
No marriage value applies. Lenders are comfortable. The premium is manageable. There is no immediate urgency, but extending now locks in a lower cost before the clock runs down.
80–84 years
Act now, before it costs you far more
You are still above the 80-year threshold, but not for long. Every year you wait, the premium increases. The moment your lease crosses below 80 years, marriage value kicks in and the cost to extend jumps significantly. This is not a reason to panic. It is a reason to act while you still have the advantage. The leaseholders who wait until it becomes urgent are the ones who pay the most. Acting now, in this window, is the single best financial decision you can make for your property.
Below 80 years
Critical: marriage value now applies
Marriage value is now payable to the freeholder, on top of the standard premium. Mortgage lenders are increasingly restrictive. Your buyer pool shrinks with every passing year. The cost to extend is materially higher than it would have been above 80. Immediate action is required.

How we handle your extension

From initial assessment through to agreed premium: a straightforward process with no surprises. You deal with one person throughout.

1
Free assessment
We review your lease details and provide an honest assessment of your position, the likely premium range, and the best route forward, at no charge.
2
Formal valuation
Once instructed, we prepare a detailed valuation of the lease extension premium using the statutory formula, comparable evidence, and our knowledge of your freeholder.
3
Serve notice
We advise on serving the Section 42 statutory notice, locking in your legal rights and triggering the freeholder's obligation to respond.
4
Negotiate & settle
We negotiate directly with the freeholder's surveyor, using comparable evidence to secure the lowest achievable premium. Most cases settle without going to Tribunal.

We know how freeholders think

What sets us apart is where we come from. We have worked on both sides of lease extension negotiations, which means we understand exactly how freeholders value these claims and where they will move.

Chartered Surveyors
TRB Partners are MRICS Chartered Surveyors with decades of experience in property valuation across England.
Personal service
You deal with Thomas Barrs directly throughout. Not a call centre, not a junior case handler. One experienced surveyor who knows your case inside out.
Freeholder intelligence
Thomas has negotiated on behalf of a major London freeholder. He knows how they instruct their surveyors, how they price their opening positions, and where they have room to move. That intelligence is now working for you.
Free initial assessment
We will tell you honestly whether your case is worth pursuing, what we think the premium will be, and what the best route forward is, before you spend a penny.

Simple, transparent fees

Our fees are structured to keep things straightforward. A fixed fee covers the full service from instruction through to settlement. A performance element on top means our interests are fully aligned with yours. Call us to discuss.

You will also need a solicitor for the legal conveyancing, typically £1,500 to £2,500, and you are responsible for the freeholder's reasonable costs on completion, usually £1,000 to £1,500. We explain all costs in full before you instruct us. There are no surprises.

The people working for you

Two surveyors. Decades of combined experience. One on each side of the negotiating table, now working together for you.

Robert Barrs
MRICS · Specialist Property Valuer

Robert is a Chartered Surveyor with over three decades of experience in property valuation. His MRICS qualification and breadth of experience across residential, commercial and specialist sectors underpins every formal valuation TRB Partners produces.

Robert reviews and signs every formal valuation report, giving clients the assurance that their case rests on independent, RICS-compliant advice.

Thomas Barrs
Lease Extension Specialist

Thomas worked for the Royal Borough of Kensington and Chelsea, managing leasehold negotiations on behalf of the council, one of London's most active freeholders. He dealt with every tactic a landlord uses, understood how they assess claims, and learned exactly where they will and won't move.

He now brings that knowledge to the other side of the table. Every leaseholder client gets the benefit of knowing how the freeholder thinks, and how to negotiate against them effectively.

Thomas handles all client relationships personally. You will not be passed around.

Everything you need to know

How do I know if I need to extend my lease?
Check your lease documents: the original term and start date will be stated. Subtract the elapsed years to get your remaining term. If you do not have your lease documents, the Land Registry holds a copy for a small fee. If your remaining term is below 90 years, it is worth getting an assessment. Below 85 years, we would strongly recommend acting.
What is marriage value and why does it matter?
Marriage value is the increase in your property's value that occurs when the lease is extended. When a lease is below 80 years, the freeholder is legally entitled to 50% of this uplift as part of the extension premium. On a London flat worth £400,000, this can easily add £20,000 to £50,000 to the cost of extending. Above 80 years, no marriage value is payable.
Can my freeholder refuse to extend my lease?
No. Once you serve a statutory Section 42 notice, the freeholder is legally obliged to respond and to negotiate. They cannot refuse. The only thing they can dispute is the price. If you cannot agree a premium, either party can apply to the First-tier Tribunal for an independent determination. The Tribunal's decision is binding on both sides.
How long does the process take?
An informal negotiation can often be resolved in 6 to 12 weeks. The formal statutory route takes longer: the freeholder has two months to respond to the Section 42 notice, and you then have six months to agree or proceed to Tribunal. Most cases settle well before Tribunal. We will advise on the best route for your specific situation.
Do I need to be living in the flat to extend the lease?
No. You can extend whether you live there or let it out. You simply need to be the registered leaseholder. Since January 2025, you can also extend as soon as you purchase a property. The previous two-year ownership rule has been abolished under the Leasehold and Freehold Reform Act 2024.
Should I wait for the new leasehold reforms?
The Leasehold and Freehold Reform Act 2024 proposes to abolish marriage value, but as of 2026 the key valuation reforms are not yet in force and implementation is not expected before late 2027 at the earliest. Waiting risks your lease shortening further, potentially costing more even under new rules. We can advise on whether waiting or acting now is right for your specific situation.
What does the extension give me?
A statutory lease extension adds 90 years to your existing term and reduces the ground rent to a peppercorn (effectively zero). So if you have 78 years left, you end up with 168 years. This makes the property fully mortgageable again, removes the ground rent liability, and restores the full market value of the flat.

Start with a free assessment

There is no obligation and no charge for an initial conversation. Call us directly or fill in the form and we will come back to you within one working day.

Thomas Barrs
TRB Partners, Chartered Surveyors
Thomas handles all lease extension enquiries personally and covers London directly. He will respond to all enquiries within one working day.
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