What Is a Section 20 Notice? A Guide for London Property Managers
Understanding Section 20 consultation requirements for major works in leasehold properties — thresholds, notice stages, leaseholder rights, and compliance risks.
The Legal Framework
Section 20 of the Landlord and Tenant Act 1985, as amended by the Commonhold and Leasehold Reform Act 2002, requires landlords and managing agents of leasehold properties to consult leaseholders before carrying out qualifying works where the contribution from any individual leaseholder exceeds £250, or before entering into a qualifying long-term agreement where costs exceed £100 per leaseholder per year. Failure to comply limits the amount recoverable through the service charge to £250 per leaseholder for qualifying works, regardless of the actual cost.
What Counts as Qualifying Works
Qualifying works are works on the building or its common parts to which the service charge relates. This covers a wide range of building maintenance and improvement projects: roof replacement, external decoration, lift replacement, communal heating system replacement, fire door upgrades, drainage works, and window replacement to common areas. Works that fall entirely within an individual leaseholder's demise, or emergency works required to address immediate danger, are exempt from the Section 20 process.
The Three-Stage Consultation Process
The statutory consultation process has three stages:
Stage 1 — Notice of Intention: The landlord must notify all leaseholders and any recognised tenants' association of the intention to carry out qualifying works, describing the works and inviting observations within 30 days. At this stage, no contractor has been selected and no specification is required in detail.
Stage 2 — Notice of Proposal: The landlord must obtain at least two estimates and provide a summary of observations received at Stage 1, together with the estimates, to all leaseholders. Leaseholders have 30 days to submit observations. If a leaseholder nominates a contractor, that contractor must be included on the tender list.
Stage 3 — Notice of Reasons: If the landlord does not select the lowest-priced estimate or a leaseholder-nominated contractor, written reasons must be provided to leaseholders within 21 days of entering the contract.
Emergency Works Exemption
Where works are urgently necessary and cannot reasonably await completion of the consultation process, the landlord may proceed immediately but must notify leaseholders as soon as practicable and explain why the emergency dispensation was required. The First-tier Tribunal (Property Chamber) can grant dispensation from consultation requirements retrospectively, but tribunals scrutinise such applications carefully — genuine emergencies are accommodated, but attempts to bypass consultation for convenience are not.
Common Compliance Failures
The most frequent errors made by London managing agents include: failing to allow the full 30-day observation period, serving notices only on tenant-occupiers rather than the registered leaseholder, failing to specify the proposed works in sufficient detail at Stage 2, and proceeding directly to contract without completing Stage 1. Even minor procedural failures can be used by leaseholders to challenge the service charge demand, potentially at significant cost to the landlord or management company.
Practical Implications for Major Works Programmes
The Section 20 timeline adds a minimum of 60 days (two 30-day observation periods) to any qualifying works programme. For large blocks with complex specification requirements, allow 90 to 120 days from the decision to proceed to contract award. Programme this into your maintenance planning cycle — a roof that needs replacing in October needs its Section 20 process started no later than July. Prestige Engineers works regularly with London managing agents on qualifying works programmes and can assist with technical specification and cost estimation to support compliant consultation.