Deferment Rate: Who should care?
Understanding the deferment rate is crucial for flat owners and landlords navigating lease extensions and freehold acquisitions. This rate, a key component in determining the premium payable, can significantly affect financial outcomes. As the residential property market undergoes shifts, stakeholders must stay informed about potential changes to the deferment rate, which may soon be reviewed.
This article delves into the complexities of leasehold law, historical cases like Sportelli, and recent challenges that could influence future valuations. By grasping these elements, property owners can better prepare for the financial implications of lease extensions and enfranchisements.
Leasehold Law & Deferments
Under leasehold law, a Landlord owns a property outright and a Leaseholder owns a lease which allows them to have exclusive possession of the property for a number of years before vacating it and handing the keys back to their Landlord.
When the leaseholder extends their lease (by 90 years or enfranchises to 999 years) they must pay a deferment compensation to their landlord for his ‘lost’ years. The amount depends on the starting point. If there are many years left on the current lease, the compensation is relatively low but if there are very few years left on the current lease, the compensation payable can be extremely high.
Get a free consultation
Deferment Rate Lease Extension Basics
The deferment rate is a percentage used to calculate the compensation a tenant pays to their landlord when they extend their lease. This rate reflects the present value of a landlord’s benefit of gaining vacant possession at the term’s end.
A small change in the deferment rate can hugely impact the compensation paid, leading to disputes. What one considers fair compensation may differ between a landlord and a tenant. The existing lease terms, including ground rent obligations, play a crucial role in determining the appropriate deferment rate on the valuation date.
Additionally, the marriage value, which is the increase in property value after a lease extension, can also influence the compensation payable.

Background of the Sportelli Case
In the early 2000s, the Lands Tribunal decided to take the unprecedented step of consolidating five appeal cases in a landmark trial that took 11 days. They even created a new procedure for themselves by giving the case guidance status, meaning that its ruling was to be used by all tribunals in future.
Known as the Sportelli case, the Tribunal determined the formula to be used for the deferment rate, as follows: DefermentRate = RiskFreeRate + RiskPremium – RealGrowthRate, and provided guidance as to their actual percentage values.
The Risk-Free Rate is the crucial factor. In layman’s terms, this is the return on investment that an investor such as a landlord can expect to make when investing a lump sum of money in a very safe place (for example Government-backed bonds or gilts). For example, if the risk-free-rate is determined to be say 1%, then an investor depositing £1,000 today could expect to be paid £10 after a year without any risk.
At the time of their determination, the Tribunal set the risk-free-rate at 2.25%.
Impact of the Sportelli Case
The good news is that the Sportelli case had a major stabilising impact on enfranchisement and lease extension cases, as it settled many arguments over the premium. Whilst there were notable cases that challenged the rate (including Arbib & Zuckerman) the Sportelli decision was largely in play for around two decades.
Key components of the Sportelli decision included:
- Risk Free Rate: The return on a safe investment, like index linked government bonds. At the time, it was set at 2.25%.
- Risk Premium: Additional return expected over the risk free rate.
- Real Growth Rate: Expected growth in market value over time.
The Sportelli decision stabilized enfranchisement and lease extension cases, despite challenges from notable cases like Arbib & Zuckerman.
The Llangewydd Court Challenge
The Llangewydd Court case in Wales, involving a dispute over a small premium payable, has left the door open for re-evaluating the deferment rate. The tenant suggested a lease extension cost of £5,500, while the landlord suggested £12,500. The landlord’s valuer argued that the Sportelli rates, set 20 years ago, were outdated.
The Sportelli case set a deferment rate of 5% for flats and 4.75% for houses, with interest rates over 4% at the time. Currently, they are around 1.87%, potentially leading to a lower rate if the same approach is applied.
The Tribunal agreed, suggesting that if a detailed financial argument is presented, the Sportelli basis may need reconsideration. Changes in interest rates, property market conditions, and future projections of the risk free rate support this argument.
Impact of the Llangewydd Court Case
Although the Llangewydd Court argument failed due to lack of sufficient evidence from the landlord’s valuer, the Tribunal left the door open for future cases. The world has changed significantly over 20 years, affecting risk, interest, and property dynamics.
Currently, a leaseholder expecting to pay £50k for a lease extension might face £170k if the deferment rate changes drastically.
Final Thoughts & Key Takeaways
Understanding the dynamics of the deferment rate is essential for property stakeholders. This article explored the legal framework and historical cases that shape current practices. The following points highlight the key insights:
- Deferment Rate Impact: Small changes in the deferment rate can lead to significant financial differences in compensation paid by leaseholders.
- Sportelli Case Framework: Established a calculation method for deferment rates that may require reevaluation due to market changes.
- Llangewydd Court Case: This case highlighted the potential for reevaluation of deferment rates, emphasizing the need for thorough evidence and updated financial arguments.
- Practical Implications: Leaseholders and landlords must stay informed about potential changes that could affect lease extension costs and property market dynamics.
By remaining informed and considering professional advice, landlords and flat owners can navigate the complexities of leasehold laws and market changes, ensuring fair and informed decisions regarding property investments.
Still unsure? We can help
Whether you are considering a lease extension or a collective freehold purchase, understanding the deferment rate is only the first step; what really matters is how it plays out in the numbers for your specific building. The Freehold Collective helps flat owners turn that complexity into a clear, practical plan, offering expert, end‑to‑end support with valuations, strategy and the entire enfranchisement process so you can secure your freehold or proceed with confidence.
Get a free consultation
Deferment Rate FAQs
What is the deferment rate and why is it important?
The deferment rate is the percentage used to calculate the compensation a leaseholder pays a landlord for the landlord’s lost right to regain possession at the end of the lease. A small change in this rate can dramatically increase or decrease lease extension and enfranchisement premiums, so it directly affects what flat owners pay and what landlords receive.
What did the Sportelli case decide about deferment rates?
The Sportelli case set the formula Deferment Rate = Risk‑Free Rate + Risk Premium − Real Growth Rate and arrived at benchmark rates of about 5% for flats and 4.75% for houses. This guidance has been used for around two decades and greatly reduced arguments over what is “fair” compensation in lease extension and freehold purchase valuations.
Does the deferment rate affect both lease extensions and freehold purchases?
Yes, the deferment rate is used in valuations for both statutory lease extensions and collective enfranchisement (buying the freehold). It helps value the landlord’s future right to vacant possession, so any change in the rate affects both types of premium.

