If you’ve heard people say, “Make sure you extend your lease before it hits 80 years,” they’re absolutely right. The 80-year mark is one of the most significant thresholds in leasehold property law — and crossing it can dramatically increase the cost of your lease extension.
At The Lease Extension Company, we help leaseholders every day who want to protect their property’s value and avoid unnecessary costs. Here’s why that 80-year milestone matters so much, what happens when you fall below it, and how to act in time.
The 80-Year Rule: What Actually Happens
When your lease drops below 80 years, a key cost factor called marriage value comes into play. This refers to the attributed increase in your property’s value once the lease is extended, and under the Leasehold Reform, Housing and Urban Development Act 1993, your freeholder becomes entitled to 50% of that increase.
In practical terms, this means:
- Your extension premium rises significantly.
- The shorter your lease gets, the faster the costs increase.
- Both your property’s market value and mortgageability can both be affected.
Even if your lease is currently at 82 or 83 years, it’s wise to start the process now. Serving your Section 42 Notice before it drops below 80 years freezes your lease from that date — meaning you avoid paying marriage value altogether.
Why Marriage Value Matters
Marriage value is one of the most misunderstood aspects of lease extensions. It represents the difference between the combined value of the flat and the freeholder’s interest before and after the lease is extended. The increase in value belongs to both parties, but once your lease dips under 80 years, you’re legally required to share half of it with your freeholder. This can add thousands of pounds to your premium, especially in high-value areas such as London and the South East. That’s why professional timing and early action are so important.
The Impact on Your Property Value
Mortgage lenders often become cautious as a lease approaches the 80-year mark. Many will either refuse to lend or require the lease to be extended as a condition of sale or remortgage.
As a result, you may find:
❌ Fewer buyers are interested in your property.
❌ Reduced resale value.
❌ More expensive extension costs if you delay.
Extending before you reach 80 years ensures your property remains fully mortgageable and protects your long-term investment.
How LEC Helps You Act in Time
At The Lease Extension Company, our team of RICS-regulated surveyors and specialist solicitors make sure you’re one step ahead of the 80-year threshold.
We’ll:
✅ Assess your current lease length and calculate your likely premium.
✅ Serve your Section 42 Notice promptly to fix the valuation date.
✅ Handle all negotiations and legal paperwork.
✅ Manage the full process to completion, with your fixed fee and no hidden costs.
Our proactive approach ensures you never miss the critical deadline — saving you money, time, and stress.
When to Start Your Lease Extension
If your lease has fewer than 85 years remaining, it’s the right time to begin. The process can take several months and serving your notice before dropping below 80 years is what locks in your legal protection.
Early action means:
✔️ No marriage value to pay.
✔️ Lower premiums.
✔️ Peace of mind that your property remains secure and valuable.
Key Takeaway
The 80-year rule isn’t just a technicality — it’s a turning point that can greatly affect your finances and property value. Extending your lease before this threshold gives you complete control, while waiting can make the process significantly more expensive.
At The Lease Extension Company, we make sure your lease is extended efficiently and correctly, protecting your investment and giving you confidence for the future — saving you money, time, and stress.
Speak with a Lease Extension Specialist Today
Arrange an appointment with our team of specialist lease extension experts and solicitors. We’ll help you identify the best route for you and your circumstances before you invest time and funds into this procedure.
Simply fill out our online Contact Form, send us an Email via [email protected] or call us for free on 0800 098 2770.
