Selling a Property with a Short Lease: Your Options

If you own a leasehold flat or maisonette and the remaining term on your lease is getting short, you are not alone. Thousands of leaseholders across England and Wales face the same challenge every year. A short lease makes your property harder to sell, reduces its market value, and limits the number of buyers who can secure a mortgage to purchase it.

The good news is that you have options. This guide explains what counts as a short lease, how it affects your sale price and mortgage availability, whether you should extend before selling, and what the process and costs look like. It also covers the changes introduced by the Leasehold and Freehold Reform Act 2024 and how they may affect your position in the future.

What counts as a short lease?

There is no single legal definition of a “short lease” in English property law. In practice, the term is used loosely by estate agents, surveyors, solicitors, and mortgage lenders, but the thresholds that matter most are:

• Below 80 years: This is the most critical threshold. Under the Leasehold Reform, Housing and Urban Development Act 1993, once a lease drops below 80 years, marriage value becomes payable when extending. This can add tens of thousands of pounds to the cost of a lease extension.
• Below 70 years: Most mainstream mortgage lenders will not lend on a lease with fewer than 70 years remaining, even if the borrower's personal circumstances are strong. Your buyer pool shrinks dramatically.
• Below 60 years: Very few lenders will consider lending at all. The property is effectively restricted to cash buyers, and the discount to market value becomes substantial.
• Below 40 years: The lease is approaching the point where it becomes a wasting asset. Values can fall by 40 to 50 per cent or more compared with a long lease, and extending becomes extremely expensive.

LEASE (the Leasehold Advisory Service, now part of the Leasehold Knowledge Partnership) advises leaseholders to start thinking about extending their lease well before it reaches the 80-year mark. The longer you wait, the more it costs. For a broader overview of leasehold sales, see our guide on selling a leasehold flat.

How a short lease affects your property's value

A lease is a diminishing asset. Unlike freehold ownership, which is permanent, a lease loses value as it gets shorter. The relationship between lease length and value is not linear — it accelerates as the lease gets shorter, particularly below 80 years.

The RICS (Royal Institution of Chartered Surveyors) publishes relativity graphs that valuers use to calculate how much a property with a short lease is worth compared with the same property on a long lease. These graphs show the percentage of freehold value that a lease retains at different remaining terms. As a general illustration:

These figures are indicative and vary depending on location, property type, and the specific terms of the lease (particularlyground rent). A specialist leasehold valuer can provide a more precise assessment for your property.

Marriage value explained

Marriage value is a concept that sits at the heart of leasehold extension costs and is the reason the 80-year threshold matters so much. It represents the increase in the property's market value that results from the lease being extended — the “marriage” of the existing lease interest and the reversion (the freeholder's interest) into a single, longer lease.

Under the Leasehold Reform, Housing and Urban Development Act 1993, once a lease has fewer than 80 years remaining, the leaseholder must pay the freeholder 50 per cent of the marriage value as part of the extension premium. Above 80 years, no marriage value is payable.

Here is an example of how marriage value works in practice:

• A flat has a market value of £250,000 with its current lease of 72 years remaining.
• The same flat with a new 162-year lease (72 + 90 years from the statutory extension) would be worth £310,000.
• The marriage value is £310,000 minus £250,000 = £60,000.
• The freeholder is entitled to 50 per cent: £30,000.
• This £30,000 is added to the other components of the premium (the diminution in the freeholder's interest and the capitalised ground rent), which can bring the total premium to £40,000 to £50,000 or more.

Had the same leaseholder extended at 82 years remaining (just above the threshold), no marriage value would have been payable, and the total premium might have been £8,000 to £12,000 — a saving of £30,000 or more. This is why LEASE and most solicitors strongly recommend extending before the lease drops below 80 years.

Impact on mortgage availability

Mortgage lenders set minimum lease length requirements because they need the lease to outlast the mortgage term by a comfortable margin. If the lease is too short, the lender's security diminishes over time, making the loan riskier. The UK Finance Lenders' Handbook provides guidance, but each lender sets its own specific criteria.

Here is a summary of typical minimum lease requirements among major UK lenders:

The practical effect is straightforward: the shorter the lease, the fewer buyers can obtain a mortgage, and the lower the price you will achieve. A property that would sell for £300,000 with an 85-year lease might achieve only £240,000 to £260,000 with a 65-year lease, because the buyer pool is restricted to cash purchasers or those with specialist lenders.

Your options when selling with a short lease

If your lease is short, you broadly have four options. The right choice depends on your financial position, your timeline, and how short the lease is.

Option 1: Extend the lease before selling (statutory route)

Under the Leasehold Reform, Housing and Urban Development Act 1993, qualifying leaseholders have the right to extend their lease by 90 years on top of the remaining term, at a peppercorn (zero) ground rent. To qualify, you must have owned the lease for at least two years.

The statutory process involves:

1. Obtaining a specialist valuation. A surveyor experienced in leasehold enfranchisement will value the property and calculate the premium payable to the freeholder. This typically costs £500 to £1,500.
2. Serving a Section 42 notice. Your solicitor prepares and serves the formal notice on the freeholder, specifying the premium you are offering. The freeholder has two months to respond with a counter-notice.
3. Negotiation. The parties (through their valuers) negotiate the premium. If agreement cannot be reached, either side can apply to the First-tier Tribunal (Property Chamber) for a determination.
4. Completion. Once the premium is agreed, the lease extension is completed and registered at HM Land Registry.

The entire process typically takes three to six months, though it can take longer if the premium is disputed and goes to tribunal. The advantage is that a longer lease makes the property easier to sell and more valuable — the increase in value usually exceeds the total cost of extending. For more detail on the costs involved in the overall sale, see our conveyancing costs breakdown.

Option 2: Start the extension and assign it to the buyer

If you need to sell quickly and cannot wait for the statutory process to complete, you can serve the Section 42 notice to start the process and then assign the benefit of the notice to your buyer as part of the sale. This means the buyer takes over the lease extension process and completes it themselves after purchasing the property.

This approach has several implications:

• The buyer knows the extension is in progress and can factor this into their offer.
• The buyer does not need to wait two years to qualify for a statutory extension (since they are continuing yours).
• The sale price will typically be higher than selling without any extension in progress, because the buyer has certainty that the process has started.
• The buyer takes on the cost of the extension premium, which will be reflected in a lower offer price for the property itself.

Option 3: Negotiate an informal lease extension

Instead of using the statutory route, you can approach your freeholder directly and negotiate an informal (non-statutory) lease extension. This can be faster and simpler, but there are important differences:

• The freeholder is under no obligation to agree to an informal extension, and may seek a higher premium than the statutory route would produce.
• The terms are negotiable — you might secure a 125-year or 999-year extension rather than the statutory 90 years on top of the existing term.
• There is no statutory timetable, so the process could be faster (weeks rather than months) or slower depending on the freeholder's willingness to engage.
• You lose the protection of the statutory framework, including the right to apply to the First-tier Tribunal if terms are unreasonable.

If you own a maisonette or a flat in a small block and have a good relationship with your freeholder, this can be a practical route. However, you should always take legal advice before agreeing to an informal extension to make sure the terms are fair.

Option 4: Sell at a discount without extending

If you cannot afford the extension premium or need to sell immediately, you can sell the property as it is and accept a lower price that reflects the short lease. The buyer will factor in the cost of extending the lease themselves (plus a margin for risk and inconvenience) and reduce their offer accordingly.

This option makes the most sense when:

• You need to sell urgently and cannot wait three to six months for a statutory extension.
• You do not have the funds to pay the extension premium upfront (though some solicitors offer deferred payment arrangements).
• The lease is so short (below 40 to 50 years) that the extension cost is prohibitively high relative to the property's value.
• You are selling to a cash buyer or investor who is experienced with short-lease properties and will handle the extension themselves.

Collective enfranchisement: buying the freehold together

If you live in a block where several flats have short leases, collective enfranchisement may be a more cost-effective solution than individual lease extensions. Under the Leasehold Reform, Housing and Urban Development Act 1993, the qualifying leaseholders in a building can collectively purchase the freehold from the freeholder, provided at least half of the qualifying leaseholders participate.

Once the leaseholders own the freehold (typically through a freehold management company), they can grant themselves new 999-year leases at a peppercorn ground rent for minimal cost — usually just the legal fees involved in drawing up the new leases. This eliminates the marriage value issue entirely and gives every participating leaseholder a lease that is, for practical purposes, as good as freehold ownership.

The cost of collective enfranchisement is shared among the participating leaseholders and includes the purchase price of the freehold, professional valuation fees, legal fees, and the freeholder's reasonable costs. For a small block of four to six flats, the total cost per leaseholder can be lower than the cost of an individual statutory lease extension, particularly where the leases are short and marriage value would otherwise be significant.

The Section 42 notice process step by step

If you decide to extend your lease using the statutory route, the process starts with a Section 42 notice under the 1993 Act. Here is what to expect:

1. Check you qualify. You must have owned the lease for at least two years. The lease must have been originally granted for a term of more than 21 years.
2. Commission a valuation. A specialist leasehold enfranchisement surveyor will inspect the property and prepare a formal valuation, including the proposed premium. This typically costs £500 to £1,500.
3. Instruct a specialist solicitor. Lease extension work is a niche area. Your solicitor will prepare the Section 42 notice and manage the process. Solicitor fees are typically £1,500 to £3,000.
4. Serve the Section 42 notice. The notice specifies the premium you are offering and the terms of the new lease. It must be served on the competent landlord (usually the freeholder).
5. Counter-notice (within two months). The freeholder has exactly two months to serve a counter-notice. They can accept your terms, propose different terms, or (in rare cases) oppose the extension on specific grounds.
6. Negotiation period. If the premium is disputed, the valuers negotiate. There is a six-month window from the counter-notice in which either party can apply to the First-tier Tribunal if agreement cannot be reached.
7. Completion. Once terms are agreed (or determined by the tribunal), the lease extension is completed and registered at HM Land Registry.

A critical point for sellers: once you have served a Section 42 notice, you can sell the property and assign the benefit of the notice to your buyer. This is useful if you want to start the process but need to sell before it completes. Your solicitor should explain the implications for both you and your buyer. For detail on what the buyer's solicitor will require about your lease, see our guide on the TA7 Leasehold Information Form.

Costs of extending a lease

The total cost of a statutory lease extension has several components. Here is a breakdown of what you should budget for:

In total, the professional fees alone can add £4,000 to £9,000 on top of the premium. This is why it is essential to get a realistic estimate of the total cost before deciding whether extending is worthwhile. A specialist surveyor can provide a cost-benefit analysis comparing the extension cost with the likely increase in sale price. For a wider view of transaction costs, see our conveyancing costs breakdown.

The Leasehold and Freehold Reform Act 2024

The Leasehold and Freehold Reform Act 2024 received Royal Assent on 24 May 2024 and includes several provisions that would significantly benefit owners of properties with short leases. The most important changes relevant to short leases are:

• Abolition of marriage value. The Act proposes to remove the requirement to pay the freeholder 50 per cent of the marriage value when extending a lease with fewer than 80 years remaining. This would substantially reduce extension costs for short-lease properties.
• 990-year lease extensions. Instead of the current 90-year statutory extension for flats, leaseholders would be able to extend to 990 years, making the property as secure as freehold for all practical purposes.
• Simplified valuation. The Act proposes a new, standardised method for calculating the premium, which should make the process more predictable and reduce valuation disputes.
• Removal of the two-year ownership requirement. The Act proposes to allow leaseholders to serve a Section 42 notice immediately upon purchase, rather than waiting two years. This would benefit buyers who purchase a short-lease property with the intention of extending.

However, as of February 2026, most of these provisions have not yet come into force. The secondary legislation required to implement them has not been laid before Parliament, and there is no confirmed timetable for commencement. Sellers should therefore make decisions based on the law as it currently stands — the 1993 Act — while keeping an eye on developments. Check with LEASE or the Law Commission for the latest position.

How a short lease affects valuation and the sale process

If you are selling a property with a short lease, you should expect the following to happen during the transaction:

• Estate agent pricing. Your agent should reflect the short lease in the asking price. If they price it as though it had a full-length lease, you risk attracting offers that fall away once the buyer's solicitor or lender identifies the issue.
• Mortgage valuation. The buyer's mortgage valuer will adjust the property's value downwards to reflect the short lease. If the down-valuation is significant, the buyer may need to find additional funds or renegotiate the price.
• Buyer's solicitor enquiries. The buyer's solicitor will raise detailed questions about the lease length, the cost of extending, whether any extension process has been started, and the implications for the buyer. These enquiries are covered in the TA7 Leasehold Information Form and the leasehold management pack.
• Lender restrictions. If the lease is below the buyer's lender's minimum, the mortgage will be declined and the sale cannot proceed unless the buyer finds an alternative lender or switches to a cash purchase.

Being upfront about the lease length from the outset — in theproperty listing, in conversations with potential buyers, and in your legal paperwork — avoids wasted time and reduces the risk of the sale falling through.

Practical tips for selling with a short lease

1. Get a specialist valuation early. Before you list, commission a valuation from a surveyor experienced in leasehold enfranchisement. They can tell you what the property is worth with its current lease, what it would be worth with an extended lease, and what the extension would cost.
2. Take legal advice on your options. A solicitor specialising in leasehold work can advise whether to extend, sell as is, or start the process and assign it. The right answer depends on your circumstances.
3. Be transparent with buyers. Disclose the lease length prominently in your listing. Buyers who know about the short lease from the start are less likely to pull out when they receive legal advice.
4. Target the right buyers. Properties with short leases can appeal to cash buyers, investors, and those looking for a bargain who are willing to handle the extension themselves. Your estate agent should market accordingly.
5. Prepare your paperwork. Order the leasehold management pack early, complete the TA7 form promptly, and have all lease documents ready for the buyer's solicitor. Delays in a short-lease sale are more damaging because nervous buyers are more likely to walk away.
6. Consider the Leasehold and Freehold Reform Act 2024 timeline. If you are not in a rush, it may be worth monitoring whether the abolition of marriage value is commenced in the near future, as this could substantially reduce the cost of extending and improve your sale position.

Informal vs formal lease extension: which route to take

When extending a lease, you have two distinct routes available: an informal (negotiated) extension agreed directly with the freeholder, or a formal (statutory) extension under the Leasehold Reform, Housing and Urban Development Act 1993. Each has advantages and drawbacks, and the right choice depends on your circumstances, your relationship with the freeholder, and how much time you have before selling.

An informal extension is negotiated privately between you and the freeholder. There is no fixed legal process — the terms, including the length of the new lease, the premium, and any changes to ground rent, are entirely a matter of agreement. This can work well where the freeholder is cooperative and willing to offer reasonable terms, and it avoids the costs associated with the statutory timetable. In the best cases, an informal extension can be completed in a matter of weeks.

However, the informal route carries significant risks. Because there is no statutory framework governing the negotiation, the freeholder is under no obligation to agree, and there is no cap on the premium they can demand. You also lose the right to apply to the First-tier Tribunal (Property Chamber) if you consider the terms unreasonable. Some freeholders — particularly large institutional landlords — have been criticised for charging inflated premiums on informal extensions, knowing that leaseholders may not be aware of their statutory rights.

The formal (statutory) route, by contrast, gives you legal protections. You have a right to a 90-year extension on top of the remaining term, at a peppercorn ground rent, and the premium is calculated using the established valuation methodology under the 1993 Act. If the freeholder's counter-proposal is unreasonable, you can refer the matter to the tribunal for a binding determination.

The table below summarises the key differences:

As a general rule, if the lease has already dropped below 80 years and the extension premium is substantial, the statutory route is usually safer because it ensures you are paying a fair, calculable price. If the lease is still above 80 years and the freeholder is reasonable, an informal extension can be quicker and cheaper. In either case, always take advice from a solicitor experienced in leasehold enfranchisement before committing to a route.

The 80-year marriage value trap

The single most important threshold in leasehold extension law is 80 years. Once a lease drops below this mark, the cost of extending can increase dramatically because of marriage value — the freeholder's statutory entitlement to 50 per cent of the increase in property value that the extension creates.

Above 80 years, no marriage value is payable. The extension premium comprises only the diminution in the freeholder's interest (the value of losing future ground rent income and the reversion at the end of the lease) plus the capitalised ground rent. These components are relatively modest for most properties.

Below 80 years, the picture changes sharply. The freeholder can claim 50 per cent of the “marriage value” — the difference between the property's value with its current short lease and its value once extended to a longer term. The shorter the lease, the larger this gap, and the more expensive the extension becomes.

Worked example: the cost of crossing the 80-year line

Consider a flat with a current market value of £250,000 on its existing 75-year lease. If the lease were extended to 999 years, the flat would be worth £300,000.

• Marriage value: £300,000 minus £250,000 = £50,000.
• Freeholder's 50 per cent share: £50,000 × 50% = £25,000.
• This £25,000 is added on top of the other premium components (diminution in the freeholder's interest and capitalised ground rent), which might amount to £8,000 to £12,000 on their own.
• Total premium: approximately £33,000 to £37,000.

Had the same leaseholder extended just five years earlier, when the lease had 82 years remaining, no marriage value would have been payable. The total premium might have been only £8,000 to £12,000 — a saving of roughly £25,000. This cliff edge is why surveyors, solicitors, and LEASE all advise leaseholders to extend well before the lease reaches 80 years.

Why the trap catches so many sellers

Many leaseholders are unaware of the 80-year threshold until they come to sell. By that point, the lease may already have dropped below the line, and the cost of extending has increased significantly. Others know about it but delay because they do not have the funds for the premium, only to find the cost rising year on year as the lease shortens further.

If your lease currently has between 80 and 85 years remaining, you are in the window where acting now could save you tens of thousands of pounds. Every year you wait brings the lease closer to the threshold, and once it crosses, the marriage value component will apply.

Reform on the horizon

The Leasehold Reform (Ground Rent) Act 2022 took the first step in leasehold reform by capping ground rents on most new long residential leases at a peppercorn (effectively zero) from 30 June 2022 onwards. However, it does not apply to existing leases or to the cost of lease extensions.

More significantly, the Leasehold and Freehold Reform Act 2024 includes a provision to abolish marriage value entirely. If and when this comes into force, it would eliminate the 80-year cliff edge and substantially reduce the cost of extending short leases. The Act also proposes to replace the current valuation methodology with a new standardised calculation and to extend lease terms to 990 years.

As of February 2026, however, the secondary legislation needed to bring these provisions into force has not been laid before Parliament, and there is no confirmed commencement date. Sellers should not rely on future reforms when making decisions today. If your lease is approaching or has already crossed the 80-year mark, the prudent course is to act under the current law rather than wait for changes that may still be some time away.

Sources

• Leasehold Reform, Housing and Urban Development Act 1993 — legislation.gov.uk
• Leasehold and Freehold Reform Act 2024 — legislation.gov.uk
• LEASE (Leasehold Advisory Service / Leasehold Knowledge Partnership) — lease-advice.org
• Law Commission — Leasehold home ownership: exercising the right to manage (Report No. 401)
• RICS — Leasehold Reform: Graphs of relativity
• UK Finance Lenders' Handbook — ukfinance.org.uk
• GOV.UK — Leasehold reform
• Leasehold Reform (Ground Rent) Act 2022 — legislation.gov.uk
• First-tier Tribunal (Property Chamber) — Leasehold valuation determinations

Frequently asked questions