Turnover represents revenue earned under a wide variety of contracts to provide architectural services to third parties.
Revenue is earned when, and to the extent that, the firm obtains the right to consideration in exchange for its performance under those contracts. It is measured at the fair value of the right to consideration, which represents amounts chargeable to clients, including recoverable expenses and disbursements, but excluding Value Added Tax.
For incomplete contracts, an assessment is made of the extent to which revenue has been earned. This assessment takes into account the nature of the assignment, its stage of completion and relevant contract terms. Unbilled revenue is included in debtors, under 'amounts recoverable on contracts'.