Section 20 Major Works: A Plain English Guide For Leaseholders And Directors

TL;DR: Section 20 major works are works to a leasehold building that cost any single leaseholder more than £250, triggering a statutory consultation process under the Landlord and Tenant Act 1985. The freeholder, RMC, or managing agent must consult leaseholders in up to three formal stages before the work begins. Get the process wrong, and cost recovery is capped at £250 per leaseholder. This guide explains the process for both sides.

A leaseholder opens an envelope and finds a notice headed "Section 20." Somewhere across town, a director looks at a surveyor's report saying the roof needs replacing and the bill will run to forty thousand pounds. Both have just met the same process, and both feel the same flicker of worry about what it means and what it'll cost.

This guide explains Section 20 major works for both sides of that exchange: the leaseholders who receive the notices, and the directors, freeholders, and managing agents who serve them.

The stakes are real either way. For a leaseholder, a Section 20 notice can mean a service charge bill of several thousand pounds. For a director or freeholder, running the consultation incorrectly caps the recoverable cost at £250 per leaseholder, leaving the rest of a major bill unfunded. There's also change on the way: the government is reviewing the whole regime, so the process described here may shift over the next year or two.

Below, we cover what counts as major works, the thresholds that trigger consultation, the three-stage process, your rights as a leaseholder, what happens when the rules aren't followed, the reforms on the horizon, and how a managing agent runs the whole thing.

What Are Section 20 Major Works?

Section 20 major works are works to a leasehold building that would cost any single leaseholder more than £250 through their service charge. Under the Landlord and Tenant Act 1985, this triggers a statutory consultation process that the freeholder, residents management company, or managing agent must follow before the works begin.

The works themselves are usually significant, one-off jobs rather than routine upkeep. Common examples include:

• Roof replacement or major roof repairs
• External decoration and rendering
• Structural repairs to walls or foundations
• Lift replacement or major overhaul
• Communal heating system replacement
• Window replacement across the block
• Fire safety remediation, including fire doors and external wall works

A service charge is a payment leaseholders make to cover the cost of maintaining and managing the shared parts of their building. When the cost of a job pushes any one leaseholder's share over £250, the consultation duty kicks in.

In Bristol, this comes up most often with the city's older building stock. A Victorian conversion needing a new roof, or a 1960s block needing its windows or external walls dealt with, will almost always cross the threshold.

Qualifying Works Vs Qualifying Long-Term Agreements

Section 20 covers two different things, and it's worth keeping them separate.

Qualifying works are works to a building or its grounds for which the cost to any single leaseholder would exceed £250 through the service charge. That's the roof, the windows, the structural repairs.

A qualifying long-term agreement is a contract lasting more than 12 months, for example a cleaning or maintenance contract, that would cost any single leaseholder more than £100 a year. The consultation process is similar, but the trigger and the threshold are different. Mixing the two up is one of the most common sources of confusion, so check which one you're dealing with before anything else.

When Does Section 20 Apply? The £250 And £100 Thresholds

Section 20 consultation applies when qualifying works would cost any single leaseholder more than £250, or when a qualifying long-term agreement would cost any single leaseholder more than £100 a year. The threshold is per leaseholder, not the total project cost, which is the point most people misunderstand.

That distinction changes everything. The trigger isn't whether the job is expensive overall. It's whether any one leaseholder's share crosses the line once the cost is divided up.

A Worked Example

Take a block of eight flats that needs a new roof. The total cost comes in at £40,000.

If the lease splits costs equally, that's £5,000 per flat. Every leaseholder is well over the £250 threshold, so consultation is required. But the maths matters even for smaller jobs. A £3,000 communal repair across the same eight flats is £375 each, still over £250, still requiring consultation. In a small block, even modest total bills trigger the process quickly.

How the cost is divided depends on apportionment: the way a building's total service charge costs are split between leaseholders, usually set out in each lease as a percentage or fraction. Not every lease splits costs equally, so the per-leaseholder figure is what you check, not the headline total.

What Section 20 Does Not Cover

Not everything needs consultation. Day-to-day repairs and maintenance below the threshold don't trigger it. Genuine emergency works can sometimes proceed without full consultation, though that route depends on getting dispensation from the Tribunal, which we come to below. And works funded from a reserve fund still count towards the threshold, so a healthy reserve doesn't remove the duty to consult.

The Three-Stage Section 20 Consultation Process

The Section 20 consultation process has up to three stages: the Notice of Intention, the Notice of Estimates, and (where required) the Notice of Reasons. Each of the first two stages carries a minimum 30-day period for leaseholders to respond, which means the process takes at least 60 days and usually three to four months in practice.

Here's how the stages and timings fit together:

Stage 1: Notice Of Intention

The Notice of Intention is the first Section 20 notice, describing the proposed works, explaining why they are needed, and inviting leaseholders to comment and nominate contractors within 30 days.

This is the notice most leaseholders are holding when they go looking for answers. It has to describe the works in general terms, explain why they're necessary, and give leaseholders at least 30 days to respond. During that window, a leaseholder can make written observations and can nominate a contractor they'd like the freeholder to get a quote from. The freeholder has to consider the observations and obtain an estimate from any properly nominated contractor.

Stage 2: Notice Of Estimates

The Notice of Estimates is the second notice, setting out at least two contractor estimates and a summary of leaseholder observations, with a further 30 days for comment.

At this stage the freeholder must have obtained at least two estimates, including one from any contractor the leaseholders nominated, and at least one from a contractor wholly unconnected to the freeholder. Leaseholders can inspect the estimates and the supporting documents, and they get another 30 days to comment on what's been proposed.

Stage 3: Notice Of Reasons (When It's Needed)

The third stage is the one people get wrong most often, because it isn't always required. A Notice of Reasons explains the freeholder's choice of contractor, and it's only needed where they did not choose the lowest estimate or a leaseholder-nominated contractor.

If the freeholder picks the cheapest quote, or goes with a contractor a leaseholder put forward, no Notice of Reasons is required. If they pick a more expensive option for some other reason, they have to explain that choice in writing before the works start.

How Long Does It All Take?

The minimum is 60 days, two consecutive 30-day response periods. In reality, most consultations run three to four months once you add the time to obtain estimates, draft and serve the notices, and summarise the observations. For directors planning major works, that lead time is the thing to build into the schedule. Starting late is how blocks end up tempted to cut corners.

What Are Your Rights As A Leaseholder?

During a Section 20 consultation, leaseholders have the right to make written observations on the proposed works, to nominate a contractor for the freeholder to obtain an estimate from, to inspect the estimates and supporting documents, and to challenge the reasonableness of the costs at the First-tier Tribunal. Leaseholders cannot, however, veto works that are genuinely needed.

Your rights during the process are real and worth using:

• Make written observations at both notice stages, which the freeholder must consider
• Nominate a contractor for the freeholder to get an estimate from
• Inspect the estimates and any documents behind them, at the time and place stated in the notice
• See a summary of the observations received and the freeholder's response
• Challenge the reasonableness of the costs at the First-tier Tribunal

Consultation Is Not A Veto

Here's the part that surprises people. Consultation gives you a voice, not a veto. A freeholder who has run the process correctly can proceed with the works even if leaseholders objected during the consultation. The duty is to consult and to consider what you say, not to do only what you agree to.

That cuts both ways. If the works are genuinely needed (a failing roof, an unsafe lift), the consultation is about how and at what cost, not whether.

Challenging The Cost At The Tribunal

Separately from the consultation, leaseholders can challenge whether the costs are reasonable. The First-tier Tribunal (Property Chamber) is the specialist tribunal that decides residential leasehold disputes in England, including service charge challenges.

The test is reasonableness: the rule, under section 19 of the Landlord and Tenant Act 1985, that service charge costs must be reasonably incurred and the works carried out to a reasonable standard. This right exists even where the consultation was followed perfectly. Tribunal fees are modest, and each side usually bears its own costs, so a genuine dispute about an unreasonable bill is worth pursuing. Withholding payment without applying to the Tribunal, on the other hand, risks debt recovery action.

What Happens If The Rules Aren't Followed?

If a freeholder, RMC, or managing agent fails to carry out the Section 20 consultation properly, the amount they can recover from each leaseholder is capped at £250 for the works, regardless of the actual cost. The only way to recover more is to apply to the First-tier Tribunal for dispensation, which is not guaranteed.

The £250 Cap

This is the consequence that makes Section 20 matter. Picture that £40,000 roof again. If the consultation wasn't done properly, the freeholder may be able to recover only £250 from each of the eight leaseholders, £2,000 in total, leaving £38,000 unfunded. For an RMC made up of the leaseholders themselves, that shortfall has nowhere to go. It's why getting the procedure right is not a technicality.

When Dispensation Applies

There is a release valve. Dispensation is a decision by the First-tier Tribunal to waive some or all of the Section 20 consultation requirements, usually granted only in emergencies or where leaseholders suffered no real disadvantage from the failure to consult. It's provided for under section 20ZA of the Landlord and Tenant Act 1985.

The leading case, Daejan Investments v Benson, established that the key question for the Tribunal is whether the leaseholders suffered real financial prejudice because of the failure to consult properly. If they didn't, dispensation is more likely. If they did, it isn't. The practical lesson is simple: dispensation is a remedy for genuine emergencies and honest mistakes, not a shortcut to skip consultation. Relying on it by design is a bad plan.

(This section covers detailed leasehold law, including a case precedent. Flag for client accuracy review before publishing.)

How Section 20 Is Changing: The 2024 Reforms

The Section 20 major works regime is under government review. The Leasehold and Freehold Reform Act 2024 paved the way for changes, and a government consultation that ran from July to September 2025 proposed reforming the consultation process, alongside wider service charge transparency measures. The current process still applies, but directors and leaseholders should expect changes over the next year or two.

The Leasehold and Freehold Reform Act 2024 (LAFRA) is the legislation strengthening leaseholder rights and introducing new transparency requirements for service charges and management, with provisions being phased in through 2025 and 2026. Section 20 sits squarely within the part of the regime under review.

The government's consultation, "Strengthening leaseholder protections over fees, charges and services," ran from 4 July to 26 September 2025. Among its proposals were reforms to the major works consultation process and a move towards standardised, more transparent service charge information. The House of Commons Library tracks the wider reform programme as it develops.

Nothing has changed yet, and timelines for leasehold reform have a long history of slipping. The honest position is that the process in this guide is the one that applies today, but anyone running or facing a consultation should keep half an eye on the reforms, because the rules are genuinely in motion.

(This section covers proposed reforms and dates. Confirm current status at final review and flag for client accuracy review before publishing.)

How A Managing Agent Handles Section 20 For You

A managing agent runs the Section 20 process on behalf of the freeholder or RMC: drafting and serving the notices, obtaining estimates, summarising leaseholder observations, managing the timeline, and keeping the documentation that proves the consultation was done correctly. The directors retain the decisions; the agent handles the procedure and the compliance risk that comes with it.

Getting The Procedure Right

The value a good agent adds is in the detail that protects cost recovery:

• Drafting notices that contain everything the regulations require
• Serving them on every leaseholder and any recognised tenants' association
• Obtaining the right number of estimates, including nominated and unconnected contractors
• Summarising observations and preparing the freeholder's responses
• Running the timeline so the 30-day periods are properly observed
• Keeping the full paper trail in case a leaseholder later queries the process

The £250 cap is what makes all of that worth doing properly. A single procedural slip on a major project can cost a block tens of thousands of pounds.

The Airsat Approach

Airsat Real Estate runs the Section 20 process end to end as part of its block management service in Bristol. Because major works are delivered in-house through Airsat Construction, the estimate, the consultation, and the delivery sit under one roof, with transparent costings and no third-party contractor markups.

The consultation itself is still followed to the letter, because that's what protects the block's ability to recover the cost. What changes is the clarity: leaseholders can see exactly what the work involves and what it costs, and the directors deal with one accountable team rather than coordinating a separate surveyor, contractor, and agent. For the wider picture of what sits alongside major works, our guide to what block management covers is a useful starting point.

(Placeholder: Airsat to add a one-line anonymised example of a Section 20 major works project consulted and delivered in-house on a Bristol block, if available.)

Conclusion

Section 20 is a protection, not an obstacle. For leaseholders, it's the mechanism that makes sure they're consulted and not overcharged for major works. For directors and freeholders, it's the process that makes those costs recoverable, as long as it's followed correctly.

Both sides have a simple job. A leaseholder facing a notice should read it carefully, respond within the 30 days, and raise any genuine concerns about the works or the cost. A director planning major works should start the consultation early and keep meticulous records, because the £250 cap turns shortcuts into expensive mistakes.

If you manage or own a residential block in Bristol and have major works on the horizon, contact the team at Airsat Real Estate. We run the Section 20 process from first notice to final invoice, with the works delivered in-house through Airsat Construction.

Frequently Asked Questions

What Is The £250 Limit For Section 20?

The £250 limit is the threshold that triggers a Section 20 consultation. If proposed works would cost any single leaseholder more than £250 through their service charge, the freeholder or managing agent must consult before the works begin. The figure is per leaseholder, based on how the lease divides costs, not the total project cost.

How Long Does A Section 20 Consultation Take?

A Section 20 consultation takes a minimum of 60 days, because the Notice of Intention and the Notice of Estimates each carry a 30-day response period. In practice, most consultations take three to four months once you factor in obtaining estimates, drafting notices, and summarising leaseholder observations.

Can I Refuse To Pay For Section 20 Major Works?

You cannot refuse to pay simply because you object to the works, provided the freeholder consulted you correctly and the costs are reasonable. You can challenge the reasonableness of the costs at the First-tier Tribunal, and if the consultation was not carried out properly, the recoverable amount may be capped at £250. Withholding payment without a tribunal application risks debt recovery action.

What Happens If A Landlord Doesn't Follow Section 20?

If a landlord fails to follow the Section 20 consultation properly, the amount they can recover from each leaseholder is capped at £250 for those works, regardless of the actual cost. The only way to recover more is to apply to the First-tier Tribunal for dispensation, which is granted at the Tribunal's discretion and is not guaranteed.

What Is Section 20 Dispensation?

Section 20 dispensation is a decision by the First-tier Tribunal to waive some or all of the consultation requirements, under section 20ZA of the Landlord and Tenant Act 1985. It is usually granted in genuine emergencies, or where the Tribunal is satisfied that leaseholders suffered no real disadvantage from the failure to consult. It should never be relied on as a shortcut.

Do Leaseholders Have To Be Consulted On A Long-Term Contract?

Yes, if the contract lasts more than 12 months and would cost any single leaseholder more than £100 a year, it is a qualifying long-term agreement and requires Section 20 consultation. Common examples include cleaning, grounds maintenance, and lift servicing contracts. The consultation process is similar to that for major works.

Is Section 20 Changing In 2026?

The Section 20 regime is under review. The Leasehold and Freehold Reform Act 2024 paved the way for changes, and a government consultation that ran from July to September 2025 proposed reforming the major works consultation process alongside wider service charge transparency measures. Nothing has changed yet, but directors and leaseholders should expect reform over the next year or two.