This document provides guidance for candidates pursuing the Assessment of Professional Competence (APC) in quantity surveying and construction. It outlines the competency requirements and provides expanded guidance on each competency. The APC aims to ensure candidates are competent to practice as a chartered surveyor. Candidates must achieve competencies at three successive levels - knowledge, application of knowledge, and reasoned advice. The competencies cover technical skills as well as professional, business and management skills. This guide assists candidates in understanding and fulfilling the competency requirements to qualify as a chartered quantity surveyor.