A managing agent for a 142-flat estate in the Home Counties carries out a routine year-end close. The estate has four service charge schedules — main block, two ancillary blocks and a separate schedule for the underground car park. During the year a £48,000 invoice for car park drainage works was posted to the main block schedule in error, two reserve fund transfers totalling £62,000 were missed off the trial balance, and a contractor rebate of £9,400 was banked into the client account but not credited to the leaseholders' schedule it related to. A leaseholder, working through the prior-year accounts with an accountant, spots the discrepancies and applies to the First-tier Tribunal under section 27A of the Landlord and Tenant Act 1985. The Tribunal disallows the mis-allocated drainage cost, orders the contractor rebate to be credited, and questions whether the reserve fund transfers were properly made under the terms of the lease. The freeholder turns to the agent for the irrecoverable shortfall and the associated costs. The agent's PI insurer is notified.
That sort of letter — a freeholder seeking to recover the consequences of accounting errors at year-end — is the most common single category of property managers' PI claim. The figures are rarely catastrophic on their own; what makes the claims expensive is the cumulative effect of multiple errors across a portfolio, the legal costs of contested Tribunal proceedings, and the broader leaseholder challenge to the agent's competence that often follows a successful section 27A application.
This article is the deep-dive on service charge accounting risk and the PI consequences that flow from it. It is a companion piece to the property managers PI pillar guide and the sister article on section 20 consultations, and assumes familiarity with the broader regulatory framework set out there.
The statutory framework — section 42 and the trust account
Section 42 of the Landlord and Tenant Act 1987 is the foundation of all block management client money handling in England and Wales. It provides that any sums paid by the contributing tenants to the landlord (or to any person — including a managing agent — on behalf of the landlord) by way of relevant service charges are held by the payee on trust to defray costs incurred in respect of which the service charges were payable, and subject to that, on trust for the persons who are the contributing tenants for the time being.
The practical consequences are substantial. The money is not the landlord's, nor the agent's; it is held on a statutory trust for the leaseholders for defined purposes. It must be kept separate from the firm's own funds (the FCA, the RICS Service Charge Residential Management Code 4th edition, the TPI Code and Propertymark all require designated client accounts), it cannot be used for any purpose other than that for which it was paid, and any interest earned on it accrues to the trust, not to the agent — unless the management agreement explicitly provides otherwise and the leases permit.
Breach of the section 42 trust is not a procedural error; it is a breach of trust, with the personal liability consequences that flow from breach of trust in equity. Where the breach is innocent and the money is restored, the position is recoverable; where money is genuinely lost — to insolvency, to misapplication, to fraud — the leaseholders look first to the trustee. Where the agent is the trustee in fact, the agent is on the hook, and the PI policy is the firm's principal defence.
Client Money Protection (CMP) sits alongside section 42. The Tenant Fees Act 2019 and the Client Money Protection Schemes for Property Agents (Approval and Designation of Schemes) Regulations 2018 make CMP mandatory for letting agents and, through the TPI and Propertymark Codes, for block managers in practical terms. CMP responds where money has been lost through theft, fraud or insolvency; PI responds where the loss is the consequence of professional negligence in the handling of the money. The two are complementary, not substitutable.
The RICS Service Charge Residential Management Code (4th edition)
The 4th edition of the RICS Service Charge Residential Management Code, approved by the Secretary of State under section 87 of the Leasehold Reform, Housing and Urban Development Act 1993, is the substantive operating manual for service charge handling. It does not have the force of statute in the sense that breach is automatically actionable, but Tribunals and courts will take a failure to follow it into account when determining whether costs are reasonable under section 19 of the 1985 Act, and the professional bodies will treat compliance as a benchmark for competence.
The Code covers, in detail, the budgeting cycle, demand procedures, accounting standards, reserve fund handling, the timing and content of year-end accounts, the engagement of accountants for certification or audit, the treatment of insurance commissions, the handling of contractor rebates and the requirements for transparency with leaseholders. A managing agent whose practice diverges materially from the Code will struggle to defend a section 27A challenge on competence grounds, and the PI claim that often follows such a challenge will be defended against the backdrop of the Code as the recognised standard of care.
The Code is reinforced by the TPI Code of Practice (which adopts and supplements the RICS Code for member firms) and, for chartered surveyors in practice, by the RICS Rules of Conduct. Together these form the standard against which professional negligence will be measured.
Year-end service charge accounts — the statutory and contractual requirements
The year-end service charge accounts are the document on which most accounting-related PI claims turn. The requirements that apply to them come from three layers — statute, the lease, and the Code.
Statutory. Section 21 of the Landlord and Tenant Act 1985 requires a written summary of service charge costs on request, and section 22 gives the right to inspect supporting documents. Section 21B requires a prescribed summary of rights and obligations to accompany every demand; non-compliance makes the demand unenforceable until remedied. Sections 47 and 48 of the Landlord and Tenant Act 1987 require demands to contain the landlord's name and address and an address for service in England and Wales; non-compliance makes the demand unenforceable. The Leasehold and Freehold Reform Act 2024, where its transparency provisions are commenced, adds further requirements.
Contractual. The lease specifies what the agent must produce — typically a year-end statement showing income, expenditure and balances, an apportionment across the relevant leaseholders, and a reconciliation of on-account demands against actual costs. Many leases require certification by an accountant, and some specify a full audit; the agent must follow the lease, not its preferred default.
The Code. The RICS Code sets out detailed expectations for the form, content, timing and certification of the accounts, the treatment of reserves, the reconciliation of bank balances, and the engagement of the accountant. ICAEW Technical Release Tech 03/11 (or its current successor) gives the accountants' framework for the engagement.
A year-end account that fails to comply with the lease, the statute or the Code is exposed to challenge under section 27A. Where the agent's role in producing the defective accounts is causally connected to the loss, the freeholder's claim for the irrecoverable shortfall is the PI exposure.
Reserve and sinking funds
Reserve funds (sometimes called sinking funds, though the terms have technical differences in some leases) are amounts collected over time to meet future major works expenditure — external decoration cycles, roof replacement, lift overhaul, plant replacement. They are a routine part of service charge accounting and a recurring source of PI exposure.
The lease must permit the collection of reserve fund contributions for the agent to demand them; not all leases do. Where the lease permits, the contributions are held on the section 42 trust for the purposes for which they were collected — they cannot simply be returned to leaseholders, transferred to the freeholder, or applied to a different purpose unless the lease permits.
The recurring errors are: collecting reserve contributions where the lease does not permit; failing to transfer collected sums to a reserve account in a timely way; using the reserve fund outside its defined remit; failing to account for it separately in the year-end accounts; failing to deal correctly with the reserve fund on a change of agent; and failing to account for interest earned. The pattern that brings them to a head is the change of agent: the incoming agent identifies the irregularities, the client either remediates or claims against the outgoing agent. PI responds on the policy in force at notification, which makes timely notification on transfer of management particularly important.
Schedules and apportionment
Most blocks of any size have multiple service charge schedules — a main schedule covering the bulk of the estate, sub-schedules covering individual blocks, courtyards, lifts, gardens, car parks, plant rooms or commercial units. The lease defines which leaseholders contribute to which schedule and in what percentages. Errors in apportionment — costs charged to the wrong schedule, percentages incorrectly applied, leaseholders charged for items their lease does not require them to contribute to — are among the most common accounting errors that lead to PI claims.
The mechanism is a Tribunal application under section 27A challenging payability. The Tribunal determines that the mis-allocated cost is not payable by the schedule on which it has been charged, and the freeholder either absorbs the cost or seeks recovery from the correct schedule (which may be out of time, or itself in deficit). Mixed-use estates compound the problem: small percentage errors over multi-year periods can accumulate into significant disputed amounts.
Contractor commissions, rebates and the duty to account
A long-running area of regulatory and tribunal attention is the agent's handling of commissions, rebates and other payments received from contractors and suppliers. The starting point in equity is that an agent owes a fiduciary duty to account to its principal for any benefit received in connection with the agency. Where the service charge is recovered on a cost basis from leaseholders, any rebate, discount or commission received reduces the cost; failing to credit the rebate is an error with PI consequences.
The most commonly disputed areas are: buildings insurance commission (a separate FCA-regulated discipline with its own conduct rules and disclosure requirements); contractor rebates and volume discounts; supplier commissions on utilities, lifts and similar long-term agreements; and rebates from sub-contractors on major works. The TPI Code, the RICS Code and the FCA's Conduct of Business sourcebook all require transparency. The agent's PI exposure is at its highest where disclosure has been incomplete.
Where accounting errors become PI claims — the recurring patterns
The recurring patterns are:
- Mis-allocation across schedules. A cost charged to the wrong schedule, disallowed on section 27A challenge, with the freeholder seeking the shortfall from the agent.
- Omitted reconciliations. Bank balances that do not match the trial balance, on-account collections not reconciled to actual expenditure, contractor accounts not closed at year-end.
- Late or missing reserve fund transfers. Contributions collected but not transferred to the reserve account; reserve fund expenditure not properly recorded; interest earned not credited correctly.
- Contractor commissions and the duty to account. Undisclosed commissions, retained rebates — sometimes innocent oversight, sometimes more serious. PI responds to negligent failure to account; CMP and Crime/Fidelity respond to dishonesty.
- Year-end accounts not produced or produced late. Persistent failure to produce timely certified accounts is a competence issue that aggregates into a Tribunal challenge.
- Demand defects. Section 21B summaries omitted, sections 47 and 48 information missing, prescribed wording incorrect. The demands are unenforceable until remedied.
- Apportionment errors. Percentages applied incorrectly, errors persisting across multiple years, cumulative amounts large enough to trigger a Tribunal application.
- Change-of-agent handover errors. Funds not properly transferred, records incomplete, reserve fund balances disputed. The incoming agent's audit of the prior year is often the trigger.
Defence costs on a contested service charge accounting claim typically run from the high four-figures on a single-leaseholder Tribunal application to the mid-six-figures on a multi-leaseholder, multi-year challenge. Timing of notification — at the first sign of the section 27A application, not when the claim against the agent crystallises — is what determines whether the policy responds.
What this means at PI renewal
For a block management firm, the PI renewal conversation around service charge accounting should cover several specific points each year. First, whether the wording explicitly contemplates service charge accounting work, including the production and supervision of year-end accounts. Second, whether the wording contemplates buildings insurance commission and broking activity, given the volume of historic and current FCA attention to that area. Third, whether any aggregate caps or sub-limits apply to service charge-related claims, and how the firm's portfolio size compares to those caps. Fourth, whether the firm has notified all relevant circumstances, including any open section 27A applications, any leaseholder correspondence raising substantive complaints about prior-year accounts, and any change-of-agent transfers where the outgoing or incoming agent has raised concerns. Fifth, whether the firm's internal procedures — multi-eye sign-off on year-end accounts, periodic reconciliation between trial balance and bank, documented procedures for reserve fund transfers, written commission disclosure — are documented to a level that supports the underwriter's view of the risk.
The property managers PI pillar guide covers the broader structural questions; this article is the deep-dive on one of the two recurring claim families. The section 20 article covers the other.
How Apex helps
Apex Insurance Brokers is an independent FCA-authorised insurance broker. We act as the firm's broker, which under the Financial Conduct Authority's Conduct of Business rules means we represent the firm's interests in the negotiation with the insurance market. We work with block management firms across the size spectrum, and our renewal conversations routinely cover service charge accounting practice, the firm's section 27A history, change-of-agent transitions, buildings insurance broking activity and the practical implications for the wording.
The terms on which we act are set out in our Terms of Business, our handling of personal data in our Privacy notice, and the route to raising any concerns about our service is on our Complaints page. The property managers sector page is the place to start a renewal conversation, or contact us directly.
Frequently asked questions
What is the section 42 trust and why does it matter for PI?
Section 42 of the Landlord and Tenant Act 1987 holds service charge contributions on statutory trust for the leaseholders, for the purposes for which they were collected. The trustee is the person who receives the money — usually the landlord or the managing agent acting on the landlord's behalf. Breach of the trust is a breach of trust in equity, with personal liability consequences for the trustee. The PI policy is the principal defence against the resulting claim; CMP responds where the loss is through theft, fraud or insolvency, but PI responds where the loss is through negligent handling.
How long do leaseholders have to challenge service charges under section 27A?
There is no fixed statutory time limit in the 1985 Act itself for bringing a section 27A application, but section 20B of the Act prevents the recovery of costs incurred more than 18 months before they are demanded unless the leaseholders have been notified within that period that costs have been incurred. In practice this means the agent must demand within 18 months of incurring the cost (or notify in writing); failure means the cost is not recoverable, which becomes a PI exposure for the agent who failed to demand or notify in time.
Does my PI cover errors made by the accountant who certifies the year-end accounts?
The accountant's certification is the accountant's professional work and is covered by the accountant's own PI. The agent's PI covers the agent's role in producing the underlying accounting records, supervising the preparation, and presenting the certified accounts to the leaseholders. Where the accountant has signed off accounts the agent supplied with errors, both parties may carry exposure and the apportionment will turn on the facts. A net contribution clause in the management agreement protects the agent from bearing 100% of a loss where the accountant is also responsible.
What happens if I discover errors in prior-year accounts when I take over a block?
The incoming agent typically has a duty to flag the issue to the client (the freeholder or RTM company), document what has been found, and propose a remedial path — re-statement of the accounts, additional disclosures to leaseholders, or where the issue is material, formal notification to the leaseholders of the prior-year position. The outgoing agent's PI exposure for the historic errors is on the policy in force at the date of notification of the circumstance to the outgoing agent's insurer, which is why timely notification on transfer is critical.
Do I need to disclose contractor commissions to leaseholders?
Yes. The agent's fiduciary duty to account, reinforced by the TPI Code, the RICS Code and (for insurance commission) the FCA Conduct of Business rules, requires transparent written disclosure of any commissions, rebates or other benefits received in connection with the management of the block. Failure to disclose risks both the regulatory consequences and a PI claim from the freeholder where the leaseholders successfully apply to recover the undisclosed amount through the service charge.
Are reserve fund balances covered by the section 42 trust?
Yes. Reserve fund contributions, where collected pursuant to the lease, are part of the service charges paid by the leaseholders and are held on the section 42 trust for the purposes for which they were collected. They must be held in a designated client account, kept separate from the agent's own funds, and applied only for the purposes for which they were collected. Interest earned belongs to the trust unless the lease or management agreement explicitly provides otherwise.
What is the right PI notification protocol when a section 27A application is made?
Most PI policies require notification of any circumstance that might give rise to a claim. A section 27A application alleging unreasonable service charges, or challenging the accounting treatment, typically meets that threshold even where no claim has yet been made against the agent. Notify the broker, who will notify the insurer, as soon as the application is served. Late notification is the most common reason a service-charge-related PI claim is declined. The cost of notification is none; the cost of late notification can be the policy.
Related guides
- Property managers PI insurance — UK guide 2026
- Section 20 consultations and property manager PI
- Property managers sector page — speak to a broker
- All Apex PI sectors
About Apex Insurance Brokers
Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority, FCA firm reference 724952. Registered in England and Wales, Companies House 07014570. Trading address QCS, 53 Queen Charlotte Street, Bristol BS1 4HQ; registered office c/o Westcan, 5 Anglo Office Park, Bristol BS15 1NT. Email info@apexinsurancebrokers.co.uk, telephone 0117 325 0027. This guide is general information about Professional Indemnity Insurance for UK block management firms and is not advice tailored to any individual firm's circumstances. Last reviewed: May 2026.
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