Source: https://www.quantsurv.com/resources/glossary/notified-sum Content format: Markdown version of the public page. Content reviewed: 2026-09-30 # Notified sum: definition and example The sum established through the applicable payment-notice mechanism, subject to any valid and timely pay less notice. By [Jack Butler-Kettle]() · Updated 30 September 2026 Guidance for England and Wales. Check the contract, amendments and facts that apply to your job. ## What it means in practice Read this alongside [section 111 of the Housing Grants, Construction and Regeneration Act 1996](). The notified sum arises from the applicable payment-notice mechanism. It is not always the amount of an invoice or the ultimate value of the work. A valid and timely pay less notice can affect the payment obligation; valuation disputes remain a separate issue. Identify the operative notice and relevant cycle. [Late payment recovery]() can help establish the documents supporting the sum claimed as unpaid. ## Worked example ### The facts A payer issues a payment notice for £8,000 against a subcontractor's £10,000 application. ### What happens 1. The subcontractor checks validity and the applicable timetable. 2. It distinguishes payment of the notified amount from its continuing valuation dispute over £2,000. ### What this shows The immediate payment question and the final valuation question can require different evidence and remedies. ## Sources 1. [Housing Grants, Construction and Regeneration Act 1996, s 111 (Requirement to pay notified sum)](). legislation.gov.uk.