What Happens When a Lease Expires?

When a lease expires, ownership of the property reverts to the freeholder. As the leaseholder, you lose your legal right to remain in the home, and you cannot sell, remortgage, or transfer a property once the lease has genuinely run out. In practice, very few leases are allowed to reach that point, because both value and mortgageability collapse long before expiry, but understanding what actually happens if you let it run down matters for anyone holding a leasehold flat or maisonette.

A lease is a fixed-term right to occupy a property, originally granted for anywhere between 99 and 999 years. Every year that passes reduces what is left, and once the term hits zero, the freeholder becomes the sole owner of the bricks, mortar, and land again. This is different from a leasehold conveyancing dispute over forfeiture, which happens when a leaseholder breaches the terms of the lease, for example by not paying ground rent or service charges. Forfeiture can end a lease early, through a court process, regardless of how many years remain. Expiry is simply the clock running out.

If a lease does expire before you have extended it, most residential leaseholders do not become homeless overnight. Under the Local Government and Housing Act 1989, an assured periodic tenancy usually arises automatically, meaning you continue living in the property but as a tenant paying a market rent to the freeholder, with none of the ownership rights or capital value you had before. This safety net exists, but it is not a position anyone should end up in deliberately: you keep a roof over your head while losing an asset that may have been worth hundreds of thousands of pounds.

• Lease expiry: The fixed term of years runs out naturally and ownership reverts to the freeholder.
• Forfeiture: The freeholder ends the lease early through the courts because of a breach, such as unpaid service charges.
• Assured periodic tenancy: A statutory fallback that lets you stay on as a rent-paying tenant once the lease has expired.
• Marriage value: The extra value released when a short lease is extended, split between leaseholder and freeholder under current rules.

Lease length is one of the biggest drivers of a flat's value, often more significant than location or condition once the term drops below a certain point. Buyers, and more importantly their mortgage lenders, get increasingly cautious as the number of years remaining falls, because a shrinking lease is a shrinking asset. Knowing where your lease sits within these bands tells you how urgently you need to act.

Above 90 years: minimal impact

A lease with more than 90 years remaining has little to no effect on value. Mortgage lenders are comfortable, buyers rarely ask questions, and you can usually delay an extension without financial consequence. This is the position most new-build flats and recently extended leases sit in.

80 to 90 years: noticeable discount, act soon

Once a lease drops into the 80s, some lenders start applying stricter criteria and buyers' solicitors flag it during searches. Value typically dips by 5 to 10%, and the extension premium starts climbing each year, so this band is the sensible window to begin the extension process.

Below 80 years: marriage value kicks in

Under current legislation, once a lease falls below 80 years, marriage value applies to any statutory extension, meaning you must pay the freeholder a share of the value created by extending. This can add tens of thousands of pounds to the premium compared with extending at 81 years, so crossing this threshold is one of the most expensive mistakes a leaseholder can make.

Below 60 years: most lenders will not lend

Below roughly 60 years, most mainstream mortgage lenders refuse to lend against the property at all, which effectively restricts the pool of buyers to cash purchasers. Anyone buying a flat with a short lease at this stage should expect to negotiate a significant price reduction and budget for an extension immediately after completion.

Mortgage lenders set minimum lease length requirements because their security depends on the property retaining resale value for the life of the loan and beyond. Most lenders want at least 70 to 85 years remaining at the point you apply, and many go further, insisting the lease still has 25 to 30 years left after your mortgage term ends. A 35-year mortgage on a flat with 95 years remaining, for example, needs the lease to still have around 30 years left when the mortgage is due to be repaid, which most lenders check as standard.

If your lease length falls below what your lender is comfortable with, whether at the point of a remortgage, a further advance, or simply during a periodic portfolio review, they can refuse to renew your deal, decline additional borrowing, or in rare cases treat it as a condition that affects the mortgage offer. This is one of the most common reasons a straightforward remortgage application gets rejected or delayed.

• Typical minimum at application: 70 to 85 years remaining, depending on the lender.
• Post-term buffer: Many lenders require 25 to 30 years remaining after the mortgage ends.
• Remortgage risk: A lease that was fine at purchase can fail lending criteria a few years later if you have not extended it.

You have several ways to deal with a lease that is running down, and the right choice depends on how many years remain, how long you plan to keep the property, and how much cash you have available. Acting earlier almost always costs less and gives you more choice, so it is worth reviewing these options well before your lease drops into a problem band.

Extend the lease

Once you have owned a flat for two years, you gain a statutory right under the Leasehold Reform, Housing and Urban Development Act 1993 to extend your lease by 90 years at a peppercorn (zero) ground rent. The premium you pay depends on the remaining term, the ground rent currently charged, and the property's value, and it typically ranges from around £5,000 for a long lease with a light discount to £40,000 or more once marriage value applies below 80 years. This is the most common route, and the one most solicitors recommend pursuing as early as possible, since lease extension costs rise the longer you wait.

Buy the freehold

If you live in a flat and enough of your fellow leaseholders want to join you, you can use collective enfranchisement to buy the freehold of the whole building together. This removes ground rent and lease length concerns permanently, since you effectively become your own landlord, but it requires cooperation from at least half the qualifying leaseholders and typically costs more upfront than an individual extension, often £15,000 to £60,000 or more per flat depending on the building. Anyone comparing this against converting leasehold to freehold costs should get a valuation from a specialist surveyor before approaching neighbours.

Negotiate an informal extension

You can also approach the freeholder directly and negotiate outside the statutory process, which can be faster if you have not yet owned the property for two years or want to avoid the formal notice procedure. The risk is that informal extensions are not bound by the same marriage value caps or peppercorn ground rent rules, so the freeholder can charge whatever the market will bear, and you have far less negotiating leverage than under the statutory route.

Sell with a short lease

If extending is not affordable or practical, you can sell the property as it stands, accepting that buyers and their lenders will price in the remaining term. Expect offers well below the equivalent long-lease value once you drop under 80 years, and be prepared for a smaller pool of interested buyers as the term shortens further, since many purchasers rely on mortgages that will not stretch to short leases.

The Leasehold and Freehold Reform Act 2024 received royal assent in May 2024 and is being brought into force in stages, with several of the most significant changes for lease extensions still awaiting secondary legislation and implementation dates. Once fully in force, the reforms will make extending a short lease considerably cheaper and simpler for most leaseholders, so it is worth understanding what is changing even if the timeline is not yet fixed.

The headline change is the abolition of marriage value, the extra payment currently charged on leases below 80 years, which should remove one of the largest single costs facing anyone with a short lease. The Act also introduces a standard 990-year extension term in place of the current 90 years, and it caps ground rent at zero (a peppercorn) on all new statutory extensions, matching what already happens today. Leaseholders will also gain the right to extend without having owned the property for two years first, and limits on non-residential space within collective enfranchisement claims are being relaxed.

The practical question for anyone sitting on a lease below 80 years is whether to extend now under the current rules or wait for marriage value to be abolished. Because implementation dates keep shifting, most leasehold conveyancing solicitors recommend getting a professional valuation under both scenarios before deciding, rather than assuming the reforms will land in time to help.

Every year you leave a short lease unextended, the premium you will eventually pay rises, and the increase accelerates sharply once you cross the 80-year marriage value threshold. This is the single clearest financial argument for acting early rather than waiting to see whether reform arrives in time.

Take a flat worth £300,000 with a long lease. Extending at 85 years remaining might cost around £6,000 to £8,000 in premium, plus £1,500 to £2,500 in professional fees for surveyors and solicitors on both sides. Wait until the lease drops to 78 years, just two years below the marriage value threshold, and the same extension could cost £18,000 to £25,000, because marriage value now applies and the freeholder is entitled to a share of the uplift. Leave it until 70 years, and you could be looking at £35,000 to £45,000 or more, alongside a property that is already harder to sell or remortgage in the meantime.

These figures are illustrative rather than a quote, since the actual premium depends on ground rent terms, local property values, and the specific formula a valuer applies, but the direction of travel is consistent across almost every case: shorter lease, higher cost, less room to negotiate.

If you are not certain how many years remain on your lease, do not guess based on when you bought the property, because the original term may already have been shortened by a previous owner's inaction. You can check the exact figure for a small fee through the Land Registry, which holds the registered title and lease document for almost every leasehold property in England and Wales.

Once you know your number, the next step depends on the band it falls into. Above 90 years, simply diarise a check every few years. Between 80 and 90, start gathering quotes for an extension now. Below 80, treat it as urgent: get a valuation, understand your options, and speak to a solicitor who handles leasehold work regularly, since the conveyancing process for a lease extension involves specific notices and deadlines that a general solicitor may not deal with often.

• Check your lease length: Search the Land Registry title register for a small fee.
• Get a professional valuation: A specialist leasehold valuer can quote the likely premium before you commit.
• Speak to a specialist conveyancer: Find your conveyancer who has handled statutory lease extensions before, since the notices involved are time-sensitive and technical.