Lease Extension Process | Step-by-Step Guide

Key Points

You must have owned the property for 2 years before you can use the formal statutory route
The statutory route gives you the legal right to extend by 90 years (plus the remaining term) at a peppercorn rent
The informal route is faster but relies on the freeholder's cooperation — you have no legal right to the terms they offer
Total costs typically range from £3,500–£20,000+ depending on the premium and professional fees
Act before your lease drops below 80 years — marriage value kicks in below this threshold, significantly increasing the premium
Always use a specialist leasehold solicitor and a RICS valuer who specialises in lease extensions

The Two Routes to Extending Your Lease

⚖️ Formal Statutory Route

Governed by the Leasehold Reform Housing and Urban Development Act 1993. Gives you a legal right to extend by 90 years + remaining term at peppercorn ground rent.

Must own for 2+ years
Freeholder must comply
Premium determined by Tribunal if no agreement
Takes 6–24 months typically
More expensive in legal fees

🤝 Informal Route

Negotiating directly with the freeholder without invoking statutory rights. Faster and potentially cheaper in professional fees — but the freeholder can dictate terms.

No 2-year ownership requirement
Freeholder can refuse or set any terms
May not get peppercorn ground rent
Can complete in 3–6 months
Lower legal fees if straightforward

Formal Statutory Route: Step by Step

Step 1 — Check Eligibility (Week 1)

You must: be a leaseholder (not a tenant or freeholder); have owned the property for at least 2 years; the property must be a flat (or house in some circumstances). Check your eligibility with a leasehold solicitor.

Step 2 — Instruct a RICS Lease Extension Valuer (Week 1–2)

Commission a specialist lease extension valuer to calculate the premium payable using the statutory formula. This is critical — get this wrong and you could overpay significantly. Expect to pay £600–£1,500 for the initial valuation.

Step 3 — Instruct a Specialist Leasehold Solicitor (Week 1–2)

Appoint a solicitor who specialises in leasehold law. They will advise on your rights, draft the Section 42 Notice, and handle negotiations. Avoid using a general conveyancer for this — specialist expertise is essential.

Step 4 — Serve the Section 42 Notice (Month 1)

Your solicitor serves a "Section 42 Tenant's Notice" on the freeholder. This formally initiates the statutory process and specifies your proposed premium. The freeholder then has 2 months to respond with a counter-notice.

Step 5 — Freeholder's Counter-Notice (Month 3)

The freeholder must serve a Section 45 Counter-Notice within 2 months. They can: accept your proposed terms; admit the right but propose a higher premium; or (rarely) deny your right if they plan to redevelop. Their surveyor will provide their own valuation.

Step 6 — Negotiation (Month 3–9)

Your valuer and the freeholder's valuer negotiate the premium. In most cases, a figure is agreed without going to Tribunal. This stage can take 3–6 months. Your solicitor will also negotiate the lease terms.

Step 7 — Tribunal (if needed) (Month 6–24)

If no agreement is reached within 6 months of the Section 45 Notice, either party can apply to the First-tier Tribunal (Property Chamber) for a determination of the premium. Tribunal is the backstop — most cases settle before this point.

Step 8 — Completion (Month 6–12 typically)

Once the premium and terms are agreed, solicitors prepare the new lease. You pay the agreed premium (and the freeholder's reasonable legal and valuation costs). Land Registry registers the new lease.

Typical Costs of a Lease Extension

Cost Item	Typical Range	Notes
Lease premium (the main payment)	£3,000–£50,000+	Depends on lease length, property value, location
Your solicitor's fees	£1,200–£3,000	Higher if Tribunal needed
Your valuer's fees	£600–£1,500	RICS-qualified lease extension specialist
Freeholder's legal fees	£800–£2,500	You must pay the freeholder's "reasonable" costs
Freeholder's valuer's fees	£400–£1,200	Also paid by you under statute
Land Registry fee	£40–£500	Sliding scale based on premium

⚠️ The 80-Year Rule: Act Before It's Too Late

When a lease drops below 80 years, the "marriage value" rule applies — the freeholder becomes entitled to 50% of the marriage value (the increase in the property's worth as a result of the extension). This can double or more the premium you have to pay. If your lease is approaching 80 years, act immediately. Use our Leasehold Extension Calculator to estimate your premium.

Frequently Asked Questions

Can I extend my lease when buying a property?

You can negotiate an informal extension with the freeholder as a condition of purchase. The formal statutory route requires you to own the property for 2 years first. However, the seller can "assign" their right to the extension to you if they've served a Section 42 Notice — ask your solicitor about this.

What does a lease extension add to the property's value?

A lease extension typically adds more to the property's value than it costs. A flat with 75 years remaining may sell for 5–10% less than an equivalent flat with 120+ years. The exact increase depends on location, lease length, and property value.

Does the Leasehold Reform (Ground Rent) Act 2022 affect me?

The 2022 Act banned ground rents on new leases in England and Wales. Under the statutory extension route, your extended lease will have a peppercorn (zero) ground rent. If you negotiate informally, check the ground rent terms carefully — some freeholders try to retain or increase it.

How long does the process take?

Typically 6–12 months for a straightforward statutory extension. Complex cases or Tribunal proceedings can extend this to 18–24 months. Informal routes are usually faster — 3–6 months — but depend on the freeholder's cooperation.

The Lease Extension Process Explained