Last updated: June 29, 2026
Quick Answer: The 2026 King's Speech confirmed a Commonhold and Leasehold Reform Bill, with Royal Assent targeted for mid-2027. South East England leaseholders with short leases face a critical window: current statutory premiums still include marriage value for leases under 80 years, but pending reforms would remove it. A RICS-qualified valuation surveyor is essential now to calculate an accurate premium and protect your position before the rules change.
Key Takeaways
- The 2026 King's Speech (13 May 2026) confirmed the Commonhold and Leasehold Reform Bill; an amended Bill is expected in Parliament in Autumn 2026, with Royal Assent targeted for mid-2027.
- Draft proposals include capping existing ground rents at £250 per year (converting to peppercorn after 40 years), banning new leasehold flats, and making commonhold the default tenure.
- The Leasehold and Freehold Reform Act 2024 already removed marriage value and standardised valuation rates in statute, but those provisions await technical fixes before commencement.
- Under current law, a lease under 80 years triggers marriage value, which can add tens of thousands of pounds to an extension premium.
- A RICS Red Book valuation from a qualified surveyor is the legal foundation for any lease extension negotiation or tribunal application.
- South East England flat owners in Surrey and Sussex with leases approaching 80 years should act now, before further market softening (Rightmove reported a 0.6% national asking-price drop in June 2026).
- The Bank of England held its base rate at 3.75% on 18 June 2026, keeping capitalisation rates relatively stable for valuation purposes.
What Is the Commonhold Bill and How Does It Affect Leaseholders in South East England?
The Commonhold and Leasehold Reform Bill, confirmed in the 2026 King's Speech on 13 May 2026, is the most significant overhaul of residential property tenure in England and Wales in decades. For South East England leaseholders, it means the long-term replacement of leasehold with commonhold as the default for new flats, plus immediate protections for existing leaseholders.
Key draft provisions include:
- Banning new leasehold flats and making commonhold the default for all new-build flat developments.
- Capping existing ground rents at £250 per year, with conversion to a peppercorn after 40 years.
- Strengthening leaseholder rights to extend leases and collectively purchase freeholds.
For Surrey and Sussex flat owners, the practical effect depends on timing. The Bill is expected to be amended and re-introduced in Parliament in Autumn 2026, with Royal Assent targeted for mid-2027. Until commencement regulations are in place, existing statutory valuation rules continue to apply.
When Does the Commonhold Bill Come Into Effect in 2026?
The Bill does not come into effect in 2026. As of late June 2026, the Commonhold and Leasehold Reform Bill is still in its pre-parliamentary drafting stage. The amended Bill is expected to be introduced to Parliament in Autumn 2026, with Royal Assent targeted for mid-2027. Commencement of specific provisions will likely follow in stages after that.
This matters for South East England leasehold reform late June 2026 planning: the Leasehold and Freehold Reform Act 2024's most important valuation changes (removing marriage value, standardising capitalisation rates) are already on the statute book but have not yet commenced. They require secondary legislation and technical fixes before they take effect.
What this means practically: Leaseholders who serve a Section 42 notice today are still governed by the 1993 Leasehold Reform, Housing and Urban Development Act valuation rules, including marriage value for sub-80-year leases.
How the Current Statutory Lease Extension Premium Is Calculated
Under the current statutory formula, the premium has three components:
| Component | What It Represents |
|---|---|
| Term loss | Ground rent income the freeholder loses during the existing lease term |
| Reversion loss | The deferred value of the flat reverting to the freeholder at lease end |
| Marriage value | 50% of the value increase from extending, payable only if lease is under 80 years |
For a 78-year lease on a Surrey/Sussex flat with an unimproved value of £350,000 (assuming a £200 ground rent and a 5% capitalisation rate, as a worked estimate):
- Term loss: Present value of £200/year ground rent over 78 years, discounted at 5% = approximately £3,800.
- Reversion loss: Present value of £350,000 deferred 90 years (to end of new 168-year lease) at 5% = approximately £2,600.
- Marriage value: The lease extension adds value. Assume the flat's value rises from £330,000 (with 78-year lease) to £350,000 (with 999-year lease). Marriage value = 50% of £20,000 = £10,000.
- Estimated total premium: approximately £16,400.
These figures are illustrative estimates based on standard methodology. A RICS-qualified surveyor will use comparable evidence and a full Red Book analysis to produce a defensible figure. See Prince Surveyors' leasehold extension and enfranchisement valuations for a formal assessment.
How Will Lease Extension Valuation Change Under the New Commonhold Rules?
Once the Leasehold and Freehold Reform Act 2024 provisions commence (or the new Bill takes effect), the valuation formula changes significantly for South East England leaseholders:
- Marriage value is abolished, regardless of lease length. This is the single biggest saving for sub-80-year leaseholders.
- Capitalisation and deferment rates are standardised by regulation, removing much of the freeholder's scope to argue for higher rates.
- The term loss calculation is simplified, as ground rents are capped and will eventually become peppercorn.
Using the same Surrey/Sussex flat at £350,000 unimproved value, the estimated premium under the reformed rules drops to approximately £6,400 (term loss plus reversion only, at standardised rates), a saving of roughly £10,000 on the marriage value element alone. This is why acting before or after commencement is a genuine financial decision, not just an administrative one.
Do I Need a Surveyor for Lease Extension Valuation After the Commonhold Bill?
Yes. A RICS-qualified surveyor remains essential for lease extension valuation even after the Commonhold Bill takes effect. Standardised rates reduce disputes over capitalisation and deferment, but the unimproved freehold value of the flat (the core input) still requires a professional Red Book valuation.
A Red Book valuation (RICS Valuation Global Standards) involves:
- Inspection of the flat and the building.
- Analysis of comparable sales in the local market (Surrey, Sussex, and surrounding areas).
- Assessment of the unimproved value, stripping out any leaseholder improvements.
- Application of the statutory formula to produce a defensible premium figure.
- A written report suitable for negotiation with the freeholder or use at the First-tier Tribunal (Property Chamber).
Leaseholders who attempt to negotiate without a surveyor routinely overpay. Freeholders' surveyors will always argue for a higher premium. For South East England flat owners, the chartered surveyors covering Guildford and the wider Surrey and Sussex region are well-placed to provide this service.
What Is the Difference Between Commonhold and Leasehold After June 2026?
Leasehold means you own your flat for a fixed term, after which ownership reverts to the freeholder. Commonhold means you own your flat outright (freehold) and jointly own the common parts through a Commonhold Association. As of late June 2026, commonhold is not yet the default, but the Bill confirms it will be for new developments.
Key differences:
- Leasehold: depreciating asset, ground rent obligations, need for lease extension.
- Commonhold: no lease to extend, no ground rent, democratic control of the building.
For existing South East England leaseholders, conversion to commonhold will require the agreement of all leaseholders and the freeholder, so mass conversion of existing blocks is unlikely in the short term.
Is Commonhold Better Than Extending a Lease?
For most South East England flat owners, commonhold is the better long-term outcome, but it is not immediately available for existing leasehold properties. Extending a lease under current or reformed rules remains the practical solution for 2026 and into 2027.
- Extend the lease if: The lease is under 85 years, you plan to sell or remortgage, or you cannot get all leaseholders to agree to a collective enfranchisement.
- Pursue collective enfranchisement if: The building has fewer than 50% non-residential use and qualifying leaseholders can form a majority.
- Wait for commonhold if: The building is newly built and developers are required to use commonhold post-commencement.
What Mistakes Do Leaseholders Make With Lease Extensions in 2026?
The most costly mistake is letting a lease fall below 80 years without acting. Once it crosses that threshold, marriage value applies under current law, adding a significant sum to the premium. With the 2026 market showing a 0.6% national asking-price softening (Rightmove, June 2026) and the BoE base rate held at 3.75%, flat values in Surrey and Sussex are under mild pressure, which can affect the unimproved value calculation.
Other common mistakes:
- Serving a Section 42 notice without a surveyor's advice, which locks in a counter-notice timetable before you know the likely premium.
- Accepting the freeholder's initial premium without obtaining an independent Red Book valuation.
- Delaying past the two-year ownership threshold required to qualify for a statutory extension.
- Ignoring the impact on remortgaging: most lenders require at least 70 years remaining after the mortgage term.
For a broader view of what a professional valuation covers, the top things looked at during a property valuation is a useful reference.
Who Benefits Most From Commonhold Reform in South East England?
Leaseholders in high-value flat markets benefit most, and South East England sits at the top of that list. Surrey and Sussex flats frequently carry ground rents and service charges that make leasehold ownership expensive. The reform benefits include:
- Sub-80-year leaseholders who currently pay marriage value (abolished under reform).
- Ground rent payers facing capped and eventually peppercorn rents.
- Buyers of new-build flats, who will automatically receive commonhold tenure post-commencement.
Freeholders and ground rent investors face the largest financial impact, as capped and peppercorn rents reduce the investment value of their portfolios.
What Should I Do Now Before the Commonhold Bill Takes Effect?
South East England leaseholders should take three steps before Autumn 2026:
- Check your lease length. If it is under 85 years, commission a Red Book valuation immediately. The closer to 80 years, the more urgent this is.
- Get a formal premium estimate. A leasehold extension valuation from a RICS-qualified surveyor gives you a defensible starting point for negotiation.
- Consult a leasehold solicitor. The interaction between the 2024 Act's uncommenced provisions and the new Bill creates genuine legal complexity. Specialist advice is not optional.
If the Bill's provisions remove marriage value on commencement, leaseholders with leases just under 80 years may benefit from waiting. A surveyor can model both scenarios.
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Lease Extension Premium Estimator (Surrey/Sussex)
Illustrative estimates only. Capitalisation rate 5%, deferment rate 5%. Obtain a RICS Red Book valuation for legal purposes.
function cgCalc(){
var v=parseFloat(document.getElementById(‘cg-val’).value)||350000;
var l=parseFloat(document.getElementById(‘cg-lease’).value)||78;
var gr=parseFloat(document.getElementById(‘cg-gr’).value)||200;
var basis=document.getElementById(‘cg-basis’).value;
var r=0.05;
var term=gr*(1-Math.pow(1+r,-l))/r;
var newL=l+90;
var rev=v*Math.pow(1+r,-newL);
var mv=0;
if(basis===’current’&&l<80){
var vShort=v*Math.pow(0.997,80-l);
mv=0.5*(v-vShort);
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var total=term+rev+mv;
var out=document.getElementById('cg-out');
out.style.display='block';
out.innerHTML='
Term loss: £’+term.toFixed(0)+’
‘
+’
Reversion loss: £’+rev.toFixed(0)+’
‘
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Marriage value: £’+mv.toFixed(0)+’
‘
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Estimated premium: £’+total.toFixed(0)+’
‘;
}
FAQ
What is marriage value in a lease extension?
Marriage value is the additional premium payable when a lease has fewer than 80 years remaining. It represents 50% of the increase in the flat's value created by the extension. Under current law, it can add thousands to the cost. The Leasehold and Freehold Reform Act 2024 abolishes it, but that provision has not yet commenced.
Can I extend my lease without a surveyor?
You can serve a Section 42 notice without a surveyor, but doing so without knowing the likely premium is high-risk. The freeholder's counter-notice starts a statutory timetable. Without your own Red Book valuation, you have no basis to challenge an inflated counter-premium at the First-tier Tribunal.
How much does a lease extension surveyor cost in South East England?
Fees vary by property value and complexity. As a general guide, a RICS Red Book lease extension valuation in Surrey or Sussex typically costs between £600 and £1,200 for a standard flat. This is a small fraction of the premium saving a good surveyor can achieve.
How long does a lease extension valuation take?
A Red Book valuation typically takes one to two weeks from instruction to report, assuming prompt access for inspection. The full statutory lease extension process (from Section 42 notice to completion) usually takes three to six months, longer if the matter goes to tribunal.
Do South East England flats have to convert to commonhold?
No. Conversion of existing leasehold blocks to commonhold is voluntary and requires agreement from all leaseholders and the freeholder. The Commonhold Bill mandates commonhold for new-build flats only. Existing leaseholders retain the right to extend their leases or pursue collective enfranchisement.
Should I wait for the Commonhold Bill before extending my lease?
If your lease is above 80 years, waiting until post-reform commencement (estimated mid-to-late 2027) to benefit from standardised rates may be reasonable. If your lease is approaching or below 80 years, waiting risks triggering marriage value under current law. A surveyor can model both scenarios for your specific property.
Conclusion
South East England leasehold reform in late June 2026 sits at a genuine turning point. The Commonhold and Leasehold Reform Bill, confirmed in the 2026 King's Speech, will reshape flat ownership across Surrey, Sussex, and the wider region, but it will not take effect immediately. Until Royal Assent in mid-2027 and subsequent commencement, the current statutory valuation rules apply in full, including marriage value for leases under 80 years.
For leaseholders with leases approaching that threshold, the cost of delay is measurable and significant. A RICS-qualified surveyor providing a Red Book valuation is not an optional extra; it is the legal and financial foundation of any extension or enfranchisement claim. With the property market showing mild softening and interest rates stable at 3.75%, the conditions for negotiating a fair premium are as good as they are likely to be in the near term.
Next steps:
- Commission a Red Book lease extension valuation from a RICS-qualified surveyor.
- Consult a leasehold solicitor about whether to serve a Section 42 notice now or wait for reform commencement.
- Contact Prince Surveyors for leasehold extension and enfranchisement valuations across South East England, including Guildford, Berkshire, and South East London.
Prince Surveyors provides RICS Red Book valuations for lease extensions, enfranchisement, and all residential and commercial property needs across South East England. View the full valuations service or contact the team directly to discuss your lease.
References
- UK Parliament. Leasehold and Freehold Reform Act 2024. legislation.gov.uk, 2024.
- UK Government. King's Speech 2026, 13 May 2026. gov.uk.
- Bank of England. Monetary Policy Committee Decision, 18 June 2026. bankofengland.co.uk.
- Rightmove. House Price Index, June 2026. rightmove.co.uk.
- RICS. Valuation Global Standards (Red Book). rics.org, 2022.
- Leasehold Reform, Housing and Urban Development Act 1993. legislation.gov.uk.