A Section 20 notice can be an unsettling piece of post. Perhaps the roof needs replacing, the outside of the building is being redecorated or the lift has reached the end of its useful life. Then you reach the estimated cost and discover that your share may be £8,000, £15,000 or considerably more.
What makes these notices particularly difficult is that they often arrive before you know exactly what the final bill will be. You may be given descriptions of works you do not fully understand, estimates from contractors you have never heard of and a relatively short period in which to respond.
My instinct with a Section 20 notice is not to start with the size of the figure, alarming though it may be. I would first separate four questions. Does the lease make you responsible for this type of expenditure? Is the proposed work genuinely necessary? Has the correct consultation procedure been followed? And, ultimately, is the amount you are being asked to pay reasonable?
Those are different questions, and keeping them separate makes a seemingly overwhelming major-works bill much easier to analyse.
This guide explains Section 20 consultation and major works for residential leaseholders in England and Wales.
Quick answer: What should you do if you receive a Section 20 notice?
A Section 20 notice usually means that your landlord, freeholder or management company is proposing substantial work to the building for which leaseholders may have to contribute through the service charge.
For qualifying works, consultation is normally required where the contribution of any one leaseholder will exceed £250, including VAT. There are separate rules for certain agreements lasting more than 12 months where a leaseholder may have to contribute more than £100 in an accounting period.
Receiving a Section 20 notice does not mean that the eventual bill is automatically payable or reasonable. Check your lease, read the proposed specification carefully, respond within the consultation period and ask focused questions about the necessity, scope and cost of the work.
If the landlord fails to follow the consultation requirements, recovery for qualifying works will ordinarily be limited to £250 per leaseholder unless the tribunal grants dispensation. Even where the consultation has been conducted correctly, the eventual service charge can still be challenged if, for example, the lease does not permit it, the expenditure was not reasonably incurred or the work was not carried out to a reasonable standard.
Contents
- What is a Section 20 notice?
- When must the freeholder consult leaseholders?
- Does a Section 20 notice mean I definitely have to pay?
- How does the Section 20 consultation process work?
- What should I do when a Section 20 notice arrives?
- Can I object to the proposed work?
- Must the freeholder choose the cheapest quotation?
- Can I nominate my own contractor?
- What if the final bill is higher than the estimate?
- What if the freeholder failed to consult properly?
- What happens with urgent major works?
- Can I challenge the cost even if Section 20 was followed?
- Can I refuse to pay a major-works bill?
- What if I cannot afford the bill?
- What if I am buying or selling a flat with Section 20 works?
- What about cladding and building-safety works?
- Can the tribunal decide a Section 20 dispute?
- Are the Section 20 rules changing?
What is a Section 20 notice?
“Section 20” is the name commonly given to the statutory consultation procedure that applies before leaseholders are charged above specified amounts for certain works or long-term agreements.
The rules originate in section 20 of the Landlord and Tenant Act 1985, together with detailed consultation regulations. The broad statutory framework applies in England and Wales, although there are differences in the detailed regulations and tribunal systems.
A Section 20 notice is therefore not simply a warning that expensive work is coming. The process is intended to give leaseholders information about what is proposed, an opportunity to comment and, in some circumstances, an opportunity to nominate a contractor.
The legislation refers to qualifying works. These might include roof replacement, external decoration, structural repairs, replacement windows or substantial work to lifts and common parts.
The key point is that Section 20 deals with consultation. It does not itself create your liability to pay. That normally comes from the lease.
Is a Section 20 notice the same as a Section 20B notice?
No. The similar names cause unnecessary confusion.
A Section 20 consultation notice concerns proposed qualifying works or certain long-term agreements. A Section 20B notice concerns the separate 18-month rule governing the recovery of service-charge expenditure already incurred.
I explain that rule separately in my guide to leasehold service charges.
When must the freeholder consult leaseholders?
For qualifying works, Section 20 consultation is normally required where the amount that any one leaseholder will be required to contribute exceeds £250, including VAT.
If flats contribute in different proportions, it is not enough simply to divide the total project cost by the number of flats. The question is whether the contribution of any individual leaseholder crosses the statutory threshold.
There is a separate £100 threshold for a qualifying long-term agreement: Broadly, an agreement lasting more than 12 months under which any leaseholder will contribute more than £100 in an accounting period.
The government-funded Leasehold Advisory Service provides a useful explanation of the current Section 20 consultation rules.
Importantly, having enough money in a reserve or sinking fund does not remove the need to consult. The money may already have been collected, but the leaseholder’s contribution towards the particular qualifying works can still exceed £250.
Does a Section 20 notice mean I definitely have to pay?
No.
This is probably the most important point in the whole guide. A Section 20 notice is part of a consultation process. It is not a ruling that the work is necessary, that the price is reasonable or that your lease makes you liable.
The lease remains the starting point. It should identify the landlord’s repairing and management responsibilities, the types of expenditure that can be recovered through the service charge and the proportion payable by each flat.
A roof may unquestionably need replacing, for example, but that does not remove the need to check whether the specification is reasonable, whether the cost has been properly incurred and whether your share has been calculated in accordance with the lease.
Equally, a huge bill is not automatically unlawful. Maintaining an ageing block can be genuinely expensive. The legal question is not whether the figure is painful, but whether the lease and the statutory protections justify it.
How does the Section 20 consultation process work?
The precise procedure depends on the type of works or agreement and, in some cases, whether public procurement requirements apply. For ordinary major works, the consultation process can involve up to three stages.
Stage 1: Notice of intention
The landlord begins by serving a notice of intention. It should describe the proposed works, or explain where a description can be inspected, and give the reasons why the works are considered necessary.
Leaseholders normally have 30 days in which to make written observations. Depending on the procedure being followed, they may also have the right to nominate a contractor from whom the landlord should seek an estimate.
This first stage is worth taking seriously. If you think the specification is excessive, an alternative repair would be more sensible, important work has been omitted or reserve funds should be used, this is the time to say so.
I would avoid replying simply, “I object because this is too expensive.” At this stage you may not yet know what a reasonable competitive price is. More useful questions are why replacement is proposed rather than repair, what professional advice supports the specification, whether warranties have been considered and what alternatives were explored.
Stage 2: Statement of estimates
After considering the initial observations, a private-sector landlord will normally obtain estimates and send leaseholders a statement giving details of at least two quotations. At least one must generally be from a contractor unconnected with the landlord, and the rules also deal with estimates from properly nominated contractors.
The landlord should summarise the observations received and its response to them. Leaseholders are normally given a further 30 days to comment.
This is often the point at which the potential liability becomes much more real. Look beyond the bottom-line figure. Are the contractors pricing the same specification? Do the totals include scaffolding, professional fees, VAT and contingencies? Is one quotation apparently cheaper simply because significant items have been excluded?
Stage 3: Notice of award
A further notice explaining who has been awarded the contract and why may then be required.
It is not required in every case. For example, under the ordinary procedure the landlord does not generally have to serve it where the successful contractor submitted the lowest quotation or was properly nominated by a leaseholder or recognised tenants’ association.
The landlord does not have to choose the cheapest contractor. There may be sensible reasons for another choice, but where a more expensive tender is selected the decision may deserve careful scrutiny.
Different procedures can apply to public-sector procurement and to qualifying works carried out under an existing long-term agreement. Do not therefore assume that every valid Section 20 consultation must contain exactly the same documents.
What should I do when a Section 20 notice arrives?
1. Check the deadline
Put the consultation deadline somewhere you will not overlook it. A detailed objection sent after the consultation has finished is much less useful than a focused observation made on time.
2. Read the lease
Find the clauses dealing with repairs, maintenance, service charges and reserve funds. Establish who is responsible for arranging the work and whether its cost can be passed to you.
If you are relatively new to leasehold ownership, my broader leasehold property guide explains how these obligations fit together.
3. Understand exactly what is proposed
A heading such as “external repairs” tells you very little. Ask for the specification, survey or other supporting information where appropriate. Try to understand what is being repaired or replaced and why.
4. Ask how the work will be funded
Check the balance of any reserve or sinking fund and whether the lease allows it to be used. Ask how much of the project will be met from existing funds and how your individual contribution has been calculated.
5. Make specific observations
Respond in writing and keep a copy. Focus on issues that might actually affect the decision: Necessity, scope, alternatives, quotations, previous repairs, warranties, contractor selection and cost.
A clear written record can become very important if the dispute later reaches a tribunal.
Can I object to the proposed work?
Yes, but consultation does not give each leaseholder a veto.
You can question whether the work is necessary, whether the specification goes further than reasonably required or whether there is a less expensive sensible alternative. The landlord must have regard to observations properly made during the consultation.
That does not mean it has to agree with them.
Suppose a surveyor advises that a failing roof has reached the point where repeated patch repairs are no longer economical. Leaseholders may understandably prefer another inexpensive repair, but the landlord can still decide on replacement if that is a reasonable management decision.
Conversely, if years of neglected maintenance have contributed to the need for an enormously expensive project, that history may be relevant. My guide to what leaseholders can do when a freeholder fails to carry out repairs explains why evidence and chronology can matter.
Must the freeholder choose the cheapest quotation?
No.
This is a common misconception. Section 20 creates a consultation process; it does not simply require the lowest quotation to win.
A more expensive contractor may offer a better specification, stronger warranty, greater specialist experience or a more credible programme for difficult work.
However, selecting a substantially more expensive tender without a convincing explanation may quite properly raise questions about whether the resulting expenditure was reasonably incurred.
Can I nominate my own contractor?
Sometimes.
Under the ordinary consultation procedure, leaseholders and a recognised tenants’ association can have a right to nominate a contractor. Where the statutory requirements are met, the landlord may have to seek an estimate from an appropriately nominated contractor.
Nomination is not the same as choosing who gets the work. The contractor still needs to satisfy relevant requirements and the landlord remains responsible for making the eventual appointment.
The right to nominate may not apply where a public-sector landlord has to advertise the contract through the relevant public procurement process, so read the notice carefully.
What if the final bill is higher than the estimate?
An estimate is not necessarily a fixed-price promise.
Building work has an unfortunate habit of revealing further problems once scaffolding is erected, surfaces are opened up or defective materials are removed. Provisional sums can also become actual expenditure.
There is no general rule that prevents the landlord recovering more than the original Section 20 estimate simply because the final cost is higher.
But a substantial increase deserves an explanation. Ask what changed, why the additional expenditure was necessary, whether it fell within the original project and whether the final cost remained reasonable.
If the nature or scope of the work changed significantly, a further question may arise as to whether additional consultation should have taken place.
What if the freeholder failed to consult properly?
This is where the familiar £250 figure becomes particularly important.
If qualifying works required consultation and the landlord failed to comply with the requirements, the amount ordinarily recoverable from each leaseholder is limited to £250.
But that is not necessarily the end of the matter. The landlord can ask the tribunal for dispensation from some or all of the consultation requirements, including after the work has been completed.
The tribunal’s focus is particularly on whether the consultation failure caused the leaseholders relevant prejudice. Could proper consultation realistically have produced a cheaper tender, altered an unnecessarily expensive specification or allowed observations that might have affected the project?
The tribunal can grant dispensation subject to conditions, including financial conditions intended to address prejudice suffered by leaseholders.
The Leasehold Advisory Service explains in more detail what happens when a landlord fails to consult.
I would therefore be wary of anyone saying, “They forgot Section 20, so you only owe £250.” That may ultimately be the result, but it is not the whole legal analysis.
What happens with urgent major works?
Urgency does not simply make Section 20 disappear.
If a building is unsafe, a roof is allowing serious water penetration or another emergency requires immediate action, completing the normal consultation first may be impractical.
The landlord can apply to the tribunal for dispensation from the consultation requirements. In genuinely urgent circumstances, that may be entirely reasonable.
But dispensation from consultation does not automatically make the resulting charge reasonable. The separate questions remain: Does the lease allow recovery of the cost, was the expenditure reasonably incurred and was the work carried out to a reasonable standard?
Can I challenge the cost even if Section 20 was followed?
Yes.
A compliant consultation does not prove that the eventual service charge is reasonable.
Under section 19 of the Landlord and Tenant Act 1985, variable service-charge costs are generally recoverable only to the extent that they were reasonably incurred. Where the charge relates to works or services, those works or services must also be of a reasonable standard.
You may therefore be able to challenge a major-works charge because the lease does not authorise it, the wrong percentage has been applied, unnecessary work was undertaken, the specification was excessive, the price was unreasonable or the work was carried out badly.
I look at those wider grounds in more detail in my guide to challenging leasehold service charges.
Can I refuse to pay a major-works bill?
Simply ignoring the bill is rarely a good strategy.
If the charge is ultimately found to be properly payable, withholding it can lead to arrears, interest, administration charges, debt proceedings and legal costs.
Where there is a genuine dispute, paying under protest while making it clear in writing that you do not accept liability or reasonableness will often be safer than simply refusing to pay.
Importantly, payment does not, by itself, mean that you have accepted the charge. Section 27A(5) of the Landlord and Tenant Act 1985 provides that a leaseholder is not treated as having agreed or admitted something merely because they have made a payment.
I would nevertheless make any protest explicit. A short written statement that payment is being made under protest and without accepting that the charge is properly payable can avoid unnecessary argument later.
What if I cannot afford the bill?
This is sometimes the hardest part of the problem. A major-works charge can be legally valid and still be completely beyond a household’s immediate means.
Start by checking whether a reserve fund should meet some of the cost. Then ask the landlord or managing agent what payment arrangements are available.
Councils and housing associations may have schemes allowing eligible leaseholders to spread major-works payments. A private landlord can also agree instalments, although there is no general rule requiring every private freeholder to offer a payment plan.
Do not wait until the payment deadline has passed before raising affordability. Even where the underlying charge is disputed, discussing payment arrangements early can avoid creating a second dispute about arrears and enforcement.
What if I am buying or selling a flat with Section 20 works?
A pending Section 20 project can become a significant issue in a leasehold sale.
If you are buying, establish what stage the consultation has reached, what work is proposed, the current estimate, how much is held in any reserve fund and whether a service-charge demand has already been issued.
Do not assume that the seller will necessarily meet the whole eventual cost merely because the first Section 20 notice arrived while they owned the flat. Liability can depend on the lease, the timing of demands and the contractual arrangements agreed between seller and buyer.
Where the final figure is still uncertain, conveyancers may negotiate a retention or other contractual arrangement to deal with the potential liability.
If you are selling, give your conveyancer the Section 20 papers at the outset. An undisclosed potential five-figure bill has an unfortunate habit of becoming much more troublesome when discovered shortly before exchange.
What about cladding and building-safety works?
If the proposed bill relates to cladding or historic building-safety defects, ordinary Section 20 principles may not tell you the whole story.
In England, the Building Safety Act 2022 provides separate statutory protections that can limit or prevent certain remediation costs being passed to leaseholders. In particular, qualifying leaseholders can be protected from cladding remediation costs and may have protection against some other historic building-safety costs.
The government’s building-safety leaseholder guidance explains those protections.
Those particular English protections do not apply in Wales. Wales has its own developing building-safety regime, including the Building Safety (Wales) Act 2026 and separate remediation arrangements. The Welsh Government provides current information on implementation of the Welsh building-safety regime.
So before accepting a substantial demand for historic fire-safety or cladding work, check whether separate statutory or remediation protections affect who should actually pay.
Can the tribunal decide a Section 20 dispute?
Yes, although the tribunal system differs between England and Wales.
In England, the First-tier Tribunal (Property Chamber) can determine whether a variable service charge is payable and, if so, by whom, to whom, in what amount and when. It can consider estimated future service charges as well as expenditure already incurred.
The official Leasehold 3 application form is used in England for applications concerning liability and the reasonableness of service charges.
In Wales, equivalent service-charge disputes are dealt with by the Leasehold Valuation Tribunal.
Evidence matters. The lease, Section 20 notices, specifications, estimates, survey reports, correspondence, photographs and invoices may all be relevant.
A dispute is usually easier to evaluate once it has been reduced to specific questions. “The bill is outrageous” communicates understandable frustration. “The specification requires replacement of all 40 windows even though the survey recommends repair to 12” gives a tribunal something concrete to examine.
Are the Section 20 rules changing?
Leasehold law is undergoing substantial reform, but the existing Section 20 rules remain in force.
In July 2026, the government confirmed plans for new service-charge transparency requirements, with leaseholders expected to begin seeing changes during 2027. These include clearer annual information about building condition and planned major expenditure.
Reform of the Section 20 major-works regime is being considered separately and the government has said that a further response will follow. For now, therefore, the existing consultation rules described in this guide continue to apply.
The government’s current position is set out in its response on strengthening leaseholder protections.
Treat the notice as the start of the conversation
A major-works bill can be daunting, particularly when the figure bears little relationship to the normal annual service charge. But a Section 20 notice is not a demand to remain silent while somebody else decides everything.
Use the consultation period. Read the lease. Understand the specification. Ask why the work is needed and how it will be paid for. Look carefully at the estimates and keep your observations focused and in writing.
At the same time, keep expectations realistic. Leasehold ownership inevitably involves sharing the cost of maintaining the building, and genuinely necessary work can be expensive. Section 20 does not give leaseholders a right to prevent reasonable maintenance simply because the timing is inconvenient.
The protection lies instead in scrutiny: The landlord must follow the proper process, the lease must authorise the charge and the resulting expenditure must satisfy the statutory requirements.
I have always found that distinction useful. The aim is not to find a technical escape from every major-works bill. It is to make sure that a frightening figure on a piece of paper can be traced back to work that is necessary, properly procured, reasonably priced and genuinely payable under the lease.
Last legally reviewed: 13 August 2026
This article is based on general principles of English and Welsh law, is intended for informational purposes only, and does not constitute legal advice or establish a professional relationship.
