A lease extension solicitor does one job with two halves: they establish that you have the statutory right to a new lease, and then they run the legal machinery that turns the right into a completed, registered lease. On a flat, that machinery is Chapter II of the Leasehold Reform, Housing and Urban Development Act 1993: a formal notice under section 42, a counter-notice from the freeholder, a negotiation window policed by statutory deadlines, and completion of a new lease the freeholder is obliged to grant under section 56, adding 90 years to your term at a peppercorn rent. (Leasehold houses use the older Leasehold Reform Act 1967 route; the solicitor's role is closely parallel.)
The fee headline first, because it is usually the question behind the search: published benchmarks put your own solicitor at roughly £800 to £1,300 for a straightforward statutory claim, your valuer at £600 to £900, and, less obviously, the freeholder's legal and valuation costs at £1,200 to £2,200 on top, because section 60 of the 1993 Act makes you pay those too. Add VAT, the disbursements on completion and a few hours of valuer negotiation, and £3,600 to £6,600 of professional costs before the premium is a realistic planning range. That basis matters when you compare figures: our guide to what a lease extension costs prices the identical stack at £2,750 to £4,700 because it quotes the fee lines alone, before VAT and negotiation time. The premium itself, the payment to the freeholder for the extra term, is a separate and usually much larger number, and that guide covers it in full.
What follows is the solicitor's job stage by stage against the statutory timeline, an independent benchmark of every fee in the stack, the defective-notice failure that causes most of the expensive outcomes, and where the fees land in your records once the claim completes.
Solicitor vs valuer: who does what, and why you need both
A statutory lease extension needs two professionals, and they do not overlap.
The valuer (a surveyor experienced in enfranchisement work, usually RICS-qualified) produces the premium figure. The statutory premium is built from the freeholder's lost ground rent, the deferred value of getting the flat back at the end of the term, and, on leases below 80 years, marriage value. That calculation is judgement-heavy, and the number your section 42 notice proposes comes straight out of it. The valuer also fights the number later: when the freeholder's valuer counters high, the negotiation over the premium is valuer against valuer, typically charged at £150 to £200 an hour on top of the valuation fee.
The solicitor does everything else: confirms the right exists, gets the notice legally correct and correctly served, runs the statutory timetable, deals with the freeholder's solicitors, protects the deadlines that keep the claim alive, agrees the terms of the new lease and completes and registers it. A solicitor will not tell you what the flat's premium should be, and a valuer will not serve a notice. Instructing only one of the two is a false economy that tends to surface either as an overpaid premium (no valuer) or a procedurally dead claim (no solicitor).
Nothing obliges you to instruct either. You can serve a section 42 notice yourself, and some leaseholders do. The risk is asymmetric: a defect in a notice you drafted is no more curable than a defect in one you paid for, the twelve-month bar on re-service applies just the same, and you remain liable for the freeholder's section 60 costs incurred on the failed claim. Acting in person saves the smallest line in the stack and exposes the largest.
On timing, the two work in parallel: the solicitor's qualification checks and the valuer's inspection happen together, so the claim is ready to serve in weeks.
The section 42 notice: drafting, service, and the defective-notice trap
Everything in a statutory claim hangs off the initial notice, so the careful work happens before it is served.
Pre-notice checks. The solicitor confirms you are a qualifying tenant holding a long lease (originally granted for more than 21 years), obtains official copies of your leasehold title and the freehold title from HM Land Registry, identifies the competent landlord (not always the same person as your immediate landlord where there are intermediate leases), and checks for traps such as an unregistered assignment or a lease held in the wrong name. Serving a notice on the wrong landlord, or from the wrong tenant, is one of the classic ways claims die.
Drafting. Section 42(3) prescribes the contents: the flat and the lease must be properly identified, the grounds on which you qualify stated, the premium you propose specified, the terms of the new lease proposed, and a date given by which the landlord must respond with a counter-notice. Section 42(5) requires that date to be at least two months after the notice is given. The proposed premium comes from your valuation and must be a realistic opening figure: courts have held that a nominal or plainly unrealistic proposal can invalidate the notice, which is another reason the valuation is commissioned first.
Service. The notice must reach the right recipient in the right way. Once validly served, it does three things at once: it fixes the valuation date, it registers as a protectable interest against the freehold title, and it starts every clock in the rest of the process.
The defective-notice trap. A defective section 42 notice costs more than any other routine failure here, and it is the easiest to avoid. The direct costs are the wasted ones: your own solicitor's and valuer's work to date, plus the freeholder's section 60 costs already incurred, which you remain liable for even when the claim goes nowhere. The indirect cost is worse. If the notice is withdrawn, or deemed withdrawn because a deadline was missed, section 42(7) bars a further notice for twelve months. During that year the lease gets a year shorter, and if it crosses or sits below the 80-year line the premium grows materially, because marriage value remains payable on sub-80-year claims (the 2024 Act's abolition of marriage value is not yet in force). On the benchmark ranges below, a failed claim typically wastes £1,500 to £2,500 of professional costs across both sides, and a premium at re-service that can be thousands higher on a short lease sits on top of that.
Buying a flat and extending immediately. The two-year ownership rule was abolished by section 27 of the Leasehold and Freehold Reform Act 2024, in force since 31 January 2025, so a buyer no longer waits to claim. Take Tom, buying a flat with 72 years left. His purchase solicitor confirms during the conveyancing that the lease qualifies, orders the enfranchisement valuation before exchange, and serves the section 42 notice on completion day. The point of the pre-exchange check is that it protects the plan: had the lease turned out not to qualify, or the freehold title revealed an intermediate landlord complication, Tom would have known before he was committed to the purchase, not after.
Why you pay the freeholder's costs too: section 60
The line item that surprises almost every leaseholder is the freeholder's bill. Under section 60 of the 1993 Act, a tenant who serves a section 42 notice is liable for the landlord's reasonable costs of three things: any investigation reasonably undertaken of the tenant's right to a new lease, any valuation of the flat obtained for the purpose of fixing the premium, and the grant of the new lease itself. In practice that means the freeholder's solicitor's qualification checks and lease drafting, and the freeholder's valuer's fee, all land on your completion statement.
Two statutory limits stop this becoming a blank cheque:
- The reasonableness test. Section 60(2) allows costs only to the extent they might reasonably have been expected to be incurred if the freeholder had been paying them personally. A freeholder cannot instruct a premium-priced team and pass the whole bill on; your solicitor's job includes challenging padded section 60 demands, and inflated ones get cut.
- The tribunal-costs exclusion. Section 60(5) provides that the tenant is not liable for any costs a party incurs in connection with proceedings before the tribunal. If the premium goes to the First-tier Tribunal, each side bears its own costs of the proceedings. This changes negotiating dynamics: a freeholder who drags a weak valuation position to a hearing pays their own way there.
The current-law position, precisely. The Leasehold and Freehold Reform Act 2024 contains a full replacement costs regime: sections 38 and 39 repeal the old costs provisions, including section 60, so that each side would generally bear its own non-litigation costs on extension and enfranchisement claims. Those sections are enacted but not in force: no commencement order covers them, and the section 60 repeal sits on the statute book as a change yet to be applied. No commencement date is knowable. The one costs reform that has commenced applies to right to manage claims only, under a different statutory regime. So the accurate statement for anyone serving a notice today is this: LFRA 2024 abolishes your liability for the freeholder's costs, but that provision is not yet in force, and a claim made today still pays them. For the full picture of which 2024 reforms are live and which are still waiting, see our ledger of what is actually in force, which also covers the "should I wait for the reforms" question properly.
Counter-notice to completion: the statutory timetable
Once the notice is served, the process runs on deadlines, and the solicitor's core value is making sure your side never misses one.
- Counter-notice. The freeholder must respond by the date in your notice (at least two months out) with a counter-notice under section 45: admitting the right and accepting your terms, admitting the right but proposing different terms (almost always a higher premium), or denying the right. The overwhelming majority admit and counter high.
- Negotiation window. The premium gap then gets negotiated, valuer to valuer, with the solicitors handling any disputed lease terms. Most claims settle here.
- The tribunal deadline. If terms are still in dispute, section 48 lets either party apply to the First-tier Tribunal (Property Chamber) once two months have passed since the counter-notice, and the application must be made within six months of it. Miss that six-month window and section 53 deems the notice withdrawn, which triggers the twelve-month re-service bar and leaves you paying the freeholder's costs for nothing. Diarising this deadline, and applying protectively while negotiation continues, is exactly the discipline you are paying a specialist solicitor for.
- Completion. Once terms are agreed or determined, section 56 obliges the freeholder to grant the new lease: the existing lease plus 90 years, at a peppercorn rent, on your existing terms with limited modernisations. (The 2024 Act legislates a 990-year term instead, but that provision is not in force; extensions completing today are plus 90.) The solicitor agrees the engrossment, deals with any mortgagee consent on either side, completes, and pays the premium and the section 60 costs.
- Registration. The new lease is registered at HM Land Registry, and your lender's charge is carried onto it. The claim is not finished until this is done; an unregistered new lease causes real trouble on a later sale.
End to end, a typical uncontested claim runs six to twelve months. Stalls happen in three places: slow or silent freeholders (if no counter-notice arrives at all, your solicitor can apply to court for the new lease on the terms you proposed), valuation stand-offs in the negotiation window, and post-agreement drift while the form of the lease is settled. Where the freeholder cannot be found at all, the Act provides a vesting-order route through the tribunal and the court, with the premium paid into court; slower and costlier, but the claim still completes.
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What it all costs: the independent fee benchmark
Fee pages are usually written by the firm doing the quoting. The table below is the neutral version: published market benchmarks cross-checked across two published sources and current at August 2026, the drivers that move each figure, and which side of the capital line each fee falls on.
| Item | Typical range | Who pays | Capital or revenue | What moves it |
|---|---|---|---|---|
| Your solicitor: notice and conveyancing | £800-£1,300 where quoted as one fixed fee; £1,200-£2,400 where the s.42 notice work and the conveyancing are billed as separate lines | You | Capital | Intermediate landlords, absent freeholder, defective title, mortgagee consent |
| Your valuation | £600-£900 | You | Capital | Flat value, sub-80-year lease (marriage value work), London premium |
| Valuer negotiation | £150-£200 per hour | You | Capital | Size of the premium gap, freeholder's valuer's appetite |
| Freeholder's legal costs (s.60) | £600-£1,300 | You | Capital | Reasonableness challenges, complexity of the freehold title |
| Freeholder's valuation (s.60) | £600-£900 | You | Capital | Same drivers as your own valuation |
| Disbursements and Land Registry fees | £150-£300 | You | Capital | Official copies, the Scale 1 registration fee, notices to lenders |
| Tribunal proceedings costs | Each side bears its own (s.60(5)) | Each party | Capital (yours) | Whether the premium gap justifies a hearing |
| VAT | 20% on the professional fees | You | Follows the fee | Not recoverable for an unregistered individual |
Ranges beat false precision here because the drivers are real. A share-of-freehold flat with a cooperative freeholder sits at the bottom of every range; a sub-80-year lease with an intermediate landlord and an argumentative managing agent hits the top of several at once. Two structural points from the table are worth pulling out. First, you are paying for four professionals, not two: your solicitor and valuer, and the freeholder's solicitor and valuer through section 60. Second, VAT is a real line rather than a rounding: on £4,000 of aggregate fees it is £800 of true cost for an individual leaseholder who cannot recover it.
A worked fee stack. Ayesha is an accidental landlord: she kept her first flat when she moved in with her partner, and it has 81 years left, so she extends now rather than let it cross the 80-year line. Her claim is uncontested and settles in the negotiation window. Her completion statement, premium aside, reads: her solicitor £950, her valuation £700, three hours of valuer negotiation £525, the freeholder's legal costs £900 (her solicitor knocked £250 off the initial demand as unreasonable), the freeholder's valuation £750, disbursements and registration £180, and VAT on her own professionals' fees £435. Total professional cost: £4,440. Every pound of it is capital expenditure, and the records section below shows where each figure lands. (Figures are drawn from the benchmark ranges above; the negotiation hours are illustrative.)
Where the fees land in your records
Three instructions to give your solicitor at the start, each of which is cheap on day one and awkward to retrofit at completion.
Ask for the completion statement itemised. The whole professional stack is capital expenditure: your solicitor, your valuer, the negotiation hours and the freeholder's section 60 costs you reimburse. None of it can be set against this year's rent, and all of it goes into your capital gains base cost instead, so the document that matters years later is a statement that shows each line separately rather than one net figure. Ayesha's seven-line statement above is the shape to ask for. Our lease extension cost guide works through the base-cost mechanics and the CGT position in full.
Get the reimbursed section 60 costs recorded as yours. The freeholder's legal and valuation fees are billed to the freeholder and paid by you, so they can end up on the statement as a disbursement with the freeholder's name on the invoice. They are still your capital expenditure. Ask for them to appear as a named line on your completion statement, with the underlying demand kept on file, because a challenge to their reasonableness that reduces them also changes the number you will one day claim.
If a company owns the flat, address the engagement letters to it. Have the solicitor and valuer engaged by the company and paid by the company, so the expenditure lands in the company's base cost. A fee paid personally for a company asset creates a loan-account question that a five-minute instruction at the outset would have avoided.
One point of timing sits outside the solicitor's remit. Your solicitor files any SDLT return as part of completion, and a statutory extension is a surrender and regrant, so a premium of £40,000 or more can bring a charge. But the return is the last step in a sequence that has already fixed the liability. If the premium is anywhere near that threshold, put the question to your tax adviser while the premium is still being negotiated: our SDLT comparison page sets out the thresholds and you can test a figure in our stamp duty calculator.
Statutory vs informal, missing freeholders, and instructing well
Statutory or informal? An informal (voluntary) extension is just a negotiated deed: less procedure, a smaller legal bill, and sometimes a sensible route with a cooperative freeholder. The solicitor's role shrinks to drafting and completing the deed, but their risk warning grows, because everything the statute guarantees is up for grabs: the added term can be less than 90 years, the ground rent can be kept or increased rather than reduced to a peppercorn, and the freeholder can walk away the day before completion with no liability. A collapsed informal negotiation also wastes months during which the lease shortened. The common professional advice is to treat the informal route as a possible shortcut discovered along the way, while preserving the statutory claim as the baseline, and to have any informal offer sanity-checked against the statutory deal before signing. Whether extending at all is the right move, as against buying the freehold with your neighbours, is a separate decision covered in our lease extension vs freehold purchase guide.
Missing or silent freeholders. Neither ends the claim: silence past the counter-notice date lets your solicitor seek the new lease on your proposed terms, and an untraceable freeholder is handled through the vesting-order route with the premium paid into court. What both scenarios share is that they are solicitor-led procedures with court timetables; budget more time and more fee.
What to look for when instructing. Volume matters more than postcode: lease extension is procedural law, so a solicitor who runs enfranchisement claims weekly beats a general conveyancer nearby. Ask five things: how many section 42 claims they ran in the last year; whether they are a member of the Association of Leasehold Enfranchisement Practitioners, which is the quickest external check on enfranchisement volume that you can run in thirty seconds; whether the quote is fixed-fee and what it excludes (tribunal work and missing-landlord procedures are legitimately extra); who diarises the section 48 deadline and whether they apply to the tribunal protectively; and whether they work with an enfranchisement valuer or expect you to source one. Vague answers to the deadline question are disqualifying, because the deadline is the claim.
A statutory lease extension rewards preparation on every front: the valuation commissioned first, the notice served with the deadlines already diarised, and the fee stack itemised on a completion statement you can still read in twenty years. Get the solicitor and valuer instructed as a pair. If the flat is let, or held in a company, have a property tax specialist look at the SDLT position and the base-cost records while the premium is still being negotiated; the legal side has its professionals, and the tax side deserves the same.