A flat can be well presented, correctly priced and in a popular location, yet still lose buyers once they see 78 years left on the lease. That is why lease extension versus selling is rarely just a question of whether you want to move. It is a commercial decision about value, marketability, timing and how much control you want over the sale.
For some leaseholders, extending first creates a stronger asset and a cleaner sale. For others, selling now – with the right information and a realistic price – is the sensible route. The best choice depends on your lease length, the likely premium, your plans for the property and the type of buyer you expect to attract.
Lease extension versus selling: start with the lease length
The number of years remaining on your lease affects more than the eventual extension premium. It can shape mortgage availability, buyer confidence and the number of people willing to make an offer.
Once a lease falls below around 80 years, the issue becomes more urgent under the current system. The cost of extending can rise because marriage value may become payable, meaning the increase in the flat’s value created by the new lease is shared with the freeholder. Buyers know this, and experienced buyers will often factor the future cost and effort into their offer.
As the term shortens further, the pool of buyers may narrow. Many owner-occupier buyers need a mortgage, and lenders have their own minimum lease requirements. A cash buyer may still proceed, but they may expect a discount for taking on a lease extension themselves.
A longer lease does not guarantee the highest sale price, of course. Condition, location, service charges, ground rent provisions and the wider market still matter. But a short lease can become the issue that dominates every viewing and negotiation.
When extending before you sell can make sense
Extending the lease before marketing is often worth considering where the remaining term is approaching or below 80 years, where you want to appeal to mortgage-backed buyers, or where you are not under pressure to complete quickly.
The main benefit is certainty. You can market the flat with a longer lease and a clearer proposition. Buyers do not have to estimate a future premium, find their own valuer, engage solicitors and negotiate with the landlord after completion. That reduced friction can make a meaningful difference to confidence and offers.
It can also put you in a better negotiating position. Rather than accepting a lower price because a buyer sees administrative work ahead, you are selling a more straightforward asset. This is particularly relevant for flats in otherwise desirable blocks, where a short lease is the only obvious obstacle.
There is a cost, however. You will need to budget for the premium, valuation and legal work, as well as the landlord’s reasonable professional costs in a statutory claim. The process takes time, and a rushed extension is not always a cheap extension. A proper valuation is essential because the premium must reflect the lease terms, property value and applicable legal framework – not a rough estimate from an online calculator.
If you qualify for a statutory lease extension, you generally need to have owned the flat for at least two years before serving notice. This is one reason to address the issue before a sale becomes urgent. Leasehold reform is changing the landscape, but not every provision in the Leasehold and Freehold Reform Act 2024 is in force. Decisions should be based on the rules and costs that apply when you act, not on assumptions about future changes.
When selling with a short lease may be the better route
There are perfectly valid reasons not to extend before selling. You may need to move quickly, lack the funds to pay the premium upfront, or own a property that is more likely to appeal to an investor or cash buyer. In those cases, trying to complete an extension first could delay a sale that needs to happen now.
Selling can also be practical where the extension premium is high relative to the extra value you are likely to achieve. The calculation is not simply: extension cost versus higher sale price. You also need to consider professional fees, the time involved, carrying costs while you wait and the risk that the wider market changes during the process.
Transparency matters. Give prospective buyers accurate details of the unexpired term, ground rent, service charge and any estimates or formal advice you have obtained on extending. A buyer who understands the position from the start is less likely to reduce their offer late in the transaction.
In some cases, a qualifying seller can begin the statutory process and assign the benefit of the claim to the buyer on completion. This can make the flat more attractive because the buyer does not have to wait until they have owned it for two years before progressing the extension. It is a technical route that needs careful timing and legal handling, but it can bridge the gap between extending first and selling with no action taken.
Compare the real numbers, not just the headline price
A higher asking price after a lease extension does not automatically leave you better off. Equally, a lower offer for a short lease may be more expensive than it first appears if the buyer is pricing in a large risk margin.
A useful comparison looks at your likely net position in each scenario. If you extend, estimate the sale price with the new lease, then deduct the premium, professional fees and the cost of holding the flat until completion. If you sell without extending, estimate the price a buyer is likely to pay after allowing for the lease length and their own future costs.
Do not overlook timing. If you are buying another home, a delayed sale can affect your onward purchase. If the flat is an investment, consider lost rent during a void period, finance costs and the impact of the lease on future tenant or buyer demand. The right choice is the one that supports your wider position, not simply the one with the largest headline figure.
A practical way to decide
Start by establishing the facts. Check the exact unexpired term, read the lease for ground rent provisions and obtain a professional view of the likely premium. Then speak to an experienced selling agent about the buyer profile for your particular flat and local market.
From there, compare three routes: extend before sale, serve and assign a statutory claim where appropriate, or sell as it stands. Each route has a different cost, timescale and level of buyer appeal. Once those figures are clear, the decision is usually far less intimidating.
What landlords should consider
For landlords and professional freeholders, a lease extension request is not just a legal event. It is an asset-management task involving valuation, statutory deadlines, documentation and communication with a leaseholder who may also be trying to sell.
A slow or unclear response can create unnecessary tension and prolong the transaction. A structured process, clear instructions to valuers and solicitors, and early engagement can reduce administration while protecting the freeholder’s position. Where a sale is involved, prompt handling may also prevent avoidable fall-throughs that serve nobody.
Lease Plus 90 helps bring the moving parts together, giving leaseholders and landlords a more managed route through valuation, negotiation and administration. The aim is not to make a technical process sound simple when it is not. It is to make the next step clear, controlled and proportionate.
If your lease is shortening and a sale may be on the horizon, do not wait until a buyer raises the question. Understanding your options early gives you more than a better spreadsheet – it gives you room to choose the route that works for your property and your plans.
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