If an envelope marked “Section 20 notice” has just landed on your doormat, your landlord or managing agent is planning major works – or a long-term contract – that you will help pay for through your service charge. A Section 20 notice is the formal start of a legal consultation that exists to protect leaseholders from paying more than they should. This 2026 guide explains exactly what the notice means, the three stages of consultation, your deadlines, how to challenge costs, and what the Government’s July 2026 service charge reforms mean for you.
A Section 20 notice is a formal letter that a residential landlord must send to every leaseholder (and any recognised tenants’ association) before carrying out “qualifying works” costing any one leaseholder more than £250, or entering a long-term agreement costing any one leaseholder more than £100 a year. It starts a statutory consultation under Section 20 of the Landlord and Tenant Act 1985.
The rules come from Section 20 of the Landlord and Tenant Act 1985, as amended by the Commonhold and Leasehold Reform Act 2002, with the detailed procedure set out in the Service Charges (Consultation Requirements) (England) Regulations 2003 (Wales has equivalent 2004 regulations). The purpose is simple: to make sure leaseholders know what work is planned, why, how much it will cost and how the contractor is chosen – and to give them a genuine chance to comment.
Section 20 applies whether you own a flat outright on a long lease, have a share of freehold, or are a shared owner. If you are unsure how your tenure affects your obligations, our guide to leasehold vs freehold is a useful starting point.
According to the Government-funded Leasehold Advisory Service (LEASE), a landlord must consult if they plan to:
Where service charges are not split equally, the threshold is tested against the flat paying the largest share. So in a block where one flat pays 20%, works costing just over £1,250 in total will trigger consultation.
Some contracts are excluded from the QLTA rules, including annual contracts that must be formally renewed each year (such as buildings insurance or a managing agent’s appointment), employment contracts (such as a caretaker) and certain intra-group agreements.
| Type of consultation | Trigger (per leaseholder, incl. VAT) | Stages | Response window | Cap if not consulted |
|---|---|---|---|---|
| Qualifying (major) works | More than £250 in total | 3 (intention, estimates, reasons) | 30 days at stages 1 and 2 | £250 per leaseholder |
| Qualifying long-term agreement (QLTA) | More than £100 a year, contract over 12 months | 2–3 (intention, proposals) | 30 days at each stage | £100 per leaseholder per year |
| Works under an existing QLTA | More than £250 | 1 (notice of intention) | 30 days | £250 per leaseholder |
| Proposed reform (not yet law) | £600 works / £300 QLTA | To be confirmed | To be confirmed | To be confirmed |
For major works under a private landlord, consultation usually takes several months from the first notice to appointing a contractor. Here is how each stage works.
The landlord describes the proposed works (or where you can inspect a description), explains why they are considered necessary, and invites written observations within 30 days. Crucially, this notice also invites you to nominate a contractor from whom the landlord should try to obtain an estimate. Tribunals have treated the “date of the notice” for posted notices as usually two working days after posting, so check dates carefully.
Once tenders are in, the landlord must send a statement setting out at least two estimates. As LEASE explains, at least one must come from a contractor wholly unconnected with the landlord, and one from a leaseholder-nominated contractor if a nomination was made. The notice must summarise the observations received at stage 1 with the landlord’s response, and give you a further 30 days to comment. You are entitled to inspect the full estimates.
If the landlord does not choose the leaseholders’ nominee or the lowest estimate, they must, within 21 days of entering into the contract, write explaining their reasons (or say where the reasons can be inspected) and summarise any stage 2 observations with their response.
Councils and housing associations follow a slightly different route. Where a contract must be publicly advertised (for example via Find a Tender), leaseholders cannot nominate a contractor, though they can still comment on the proposals.
You cannot usually stop genuinely necessary works, and you cannot refuse to pay simply because you would rather not. But the observations you make are a powerful tool – the landlord must “have regard” to them, and they can be important evidence if the cost is later challenged. A practical checklist:
A landlord’s specification is often based on a schedule of condition or condition survey. Having your own surveyor review it is one of the most cost-effective ways to spot inflated or unnecessary items.
If a landlord skips or botches the Section 20 process, they can only recover £250 per leaseholder for the works (or £100 a year for a QLTA) – unless the First-tier Tribunal (Property Chamber) in England, or the Leasehold Valuation Tribunal in Wales, grants dispensation under section 20ZA.
Dispensation is commonly sought for urgent works, such as an emergency roof repair or interim fire safety measures. Following the Supreme Court’s decision in Daejan Investments Ltd v Benson [2013] UKSC 14, the tribunal focuses on whether leaseholders suffered real prejudice from the failure to consult, and it can grant dispensation on conditions – for example requiring the landlord to pay leaseholders’ reasonable costs or reducing the recoverable sum. If you are asked to comment on a dispensation application, set out clearly how the lack of consultation affected you.
Yes. Even after a correct consultation, service charges must be reasonably incurred and works carried out to a reasonable standard (section 19 of the 1985 Act). You can apply to the First-tier Tribunal to decide whether costs are reasonable and payable. Common grounds include:
Independent expert evidence often makes the difference at tribunal. If a dispute escalates, a surveyor acting as an expert witness can give the tribunal an impartial view of the works and their cost.
Service charge regulation is in the middle of its biggest shake-up in two decades:
Separately, the leasehold valuation landscape continues to evolve – see our update on the leasehold valuation rates consultation.
Outstanding major works are one of the most significant hidden costs in a leasehold purchase. If you are buying, ask the seller’s managing agent (via the leasehold information pack) whether any Section 20 notices have been served, planned works over the next few years, and the reserve fund balance. Negotiate a price reduction or a retention if a large bill is imminent. Our guide to buying a leasehold property covers the wider checks, and a building survey will help you judge the condition of the common parts yourself. If your lease is getting short, factor in the cost of a lease extension too.
The right adviser depends on the problem. A suitably qualified, accredited building surveyor – for example one regulated by RICS or a member of CIOB or RPSA – can review the scope, specification and tenders; a solicitor can advise on the lease wording and tribunal procedure; and LEASE provides free initial guidance. For many leaseholders, an independent technical review of the specification and estimates at stage 1 or 2 is the most cost-effective step, because it is far easier to shape the works before a contract is signed than to challenge costs afterwards.
Survey Merchant connects leaseholders, freeholders and residents’ associations with independent surveyors who understand major works and service charge disputes. Here is why clients choose us:
Received a Section 20 notice and want an independent view before the deadline? Contact Survey Merchant today for a fast, fixed-fee quote, or explore our building surveying services.
Survey Merchant provides vetted RICS surveyors across 100+ UK locations at fixed fees:
→ Level 2 Home Survey (HomeBuyer Report)
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→ RICS Red Book property valuations
→ Party wall surveyors — notices, awards & schedules of condition
→ Expert witness surveyors — CPR Part 35 reports for property disputes
