QS Handbook


The QS Handbook is a suite of guidance notes that define good technical standards for quantity surveying and construction professionals. These standards are essential development tools for younger professionals working through their APC and useful guides to best practice for more experienced professionals.

The standards provide certainty and consistency in quantity surveying processes. Clear standards against which professionals can perform their duties eliminate ambiguity and promote best practice. They also help to ensure clients receive objective advice, delivered in a professional manner and with a consistent approach, and allow the benchmarking of services when employing professionals.

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This guidance note looks at the general principles of retention, including law; reasons for inclusion within a contract; retention levels and how amounts are deducted, certified or released. The guidance note also reviews common issues including financing; insolvency, and defects rectification.