Selling a Property With a Short Lease, What Counts as Short and How to Maximise Value

What Is a Short Lease?

A leasehold property with a short lease is one where the number of years remaining on the lease is low enough to deter buyers, restrict mortgage availability, and suppress the sale price. In practical terms:

• **Below 85 years:** Many mortgage lenders become cautious and impose restrictions
• **Below 80 years:** Most lenders will not lend at all; lease extension costs increase substantially
• **Below 70 years:** Property becomes very difficult to sell on the open market
• **Below 60 years:** Effectively unmortgageable by a standard lender; only cash buyers at significant discounts

The lease term that existed when the flat was originally sold (often 99, 125, or 999 years) is irrelevant, only the years **remaining** matter.

The 80-Year Cliff

The most important threshold in leasehold law is **80 years remaining**. This is commonly referred to as the "80-year cliff," and it has two significant consequences:

1. Mortgage Lenders Will Not Lend

The vast majority of high street mortgage lenders require a minimum remaining lease term of **80–85 years at the end of the mortgage term** (not just at the date of purchase). For a 25-year mortgage, this means the lease must have at least 105–110 years remaining today for the lender to be comfortable. Properties below these thresholds are, in practical terms, cash-only purchases.

2. Marriage Value Becomes Payable

Below 80 years, the freeholder becomes entitled to a share of the **marriage value**, the additional value created by the lease extension itself. This is calculated as 50% of the uplift in the property's value that results from the extension being granted. On a flat worth £400,000, this can add tens of thousands of pounds to the extension cost.

Once a lease falls below 80 years, every additional year lost increases the extension premium significantly. The cost compounds quickly, a lease at 79 years is considerably more expensive to extend than one at 80 years.

Selling at a Discount vs Extending First

This is the central decision for sellers with a short lease. The two approaches have different financial outcomes, timescales, and risks.

Option A: Sell at a Discount

You market the property at below full vacant possession value, reflecting the short lease. The buyer (typically a cash buyer or developer) takes on the lease extension process.

**Advantages:**

• Faster, no need to complete the extension before selling
• Lower upfront cost, you do not fund the extension premium yourself
• Simpler, fewer moving parts in the transaction

**Disadvantages:**

• Significant price reduction, buyers expect a discount that exceeds the extension cost, reflecting the hassle and risk they are taking on
• Narrow buyer pool, only cash buyers and experienced investors
• Below-market yield, if you are letting the property, a short lease affects rental yield by limiting future sales options for investors

Option B: Extend the Lease Before Selling

You initiate the statutory lease extension process before marketing (or early in the marketing period), and complete the extension before or at the point of sale. Alternatively, you can assign your right to extend to a buyer.

**Advantages:**

• Full market value achievable, a flat with a 990-year lease sells like any other freehold-equivalent property
• Wider buyer pool, mortgageable, accessible to first-time buyers and those with smaller deposits
• Higher price almost always offsets the extension premium paid

**Disadvantages:**

• Time, the statutory process takes a minimum of three to six months; longer if disputed
• Upfront cost, you fund the extension premium (£10,000–£50,000+ depending on the property)
• Risk of freeholder challenges

For most sellers, **extending the lease before selling is financially superior**, provided you have the time and funds to do so.

The Statutory Lease Extension Process

Qualifying Criteria

To exercise the statutory right to a lease extension under the **Leasehold Reform, Housing and Urban Development Act 1993** (as amended by the Leasehold and Freehold Reform Act 2024), you must:

• Have owned the flat for at least **two years**
• The flat must be let on a long lease (originally granted for more than 21 years)

The Section 42 Notice

The process begins with a **Section 42 notice**, a formal written notice served on the freeholder by your solicitor. The notice must:

• Identify the property and the current lease
• State the premium you are proposing to pay for the extension
• State the proposed new lease terms

Serving a Section 42 notice fixes the **valuation date** for the extension premium. This is important: if property values are rising, serving the notice early locks in a lower premium.

The freeholder has two months to respond with a counter-notice.

The Statutory Extension Terms

Under the statute, you are entitled to a lease extension of **90 years added to the current term** (so an 80-year lease becomes 170 years) and a ground rent reduced to a **peppercorn (zero)**. This is an extraordinarily valuable right.

Premium Calculation

The premium is calculated using a formula that takes into account:

• The present value of the ground rent income the freeholder will lose
• The reversion value (the value of the flat reverting to the freeholder when the current lease expires)
• Marriage value (if below 80 years)

Freeholders must use a qualified valuer. You should also instruct one. Where the parties cannot agree a premium, the matter is referred to the **First-tier Tribunal (Property Chamber)**.

Assigning the Benefit to a Buyer

If you have served a Section 42 notice but have not completed the extension, you can sell the flat and **assign the benefit** of the notice to your buyer. The buyer then steps into your shoes and continues the process. This is useful if you need to sell before the extension completes.

Informal Lease Extension

Not all lease extensions go through the statutory route. Where landlord and tenant have a good relationship and the freeholder is cooperative, an **informal** (or voluntary) extension can be negotiated directly without serving a Section 42 notice. This can be faster and cheaper.

The downside is that the terms are whatever the freeholder agrees to, and there is no statutory guarantee. Some informal extensions include a ground rent review, check the terms carefully before accepting. Since April 2023, any new lease (including extensions) of a dwelling cannot have a ground rent exceeding a peppercorn.

Indicative Price Impact of Short Leases

These are indicative. Actual discounts vary by location, property type, and buyer profile.

Property Passport UK

Property Passport UK displays lease tenure information sourced from HM Land Registry title data for every indexed property. Before marketing your flat, search the property on Property Passport UK to verify the tenure classification and obtain the title number, useful context for your lease extension solicitor.