Understanding RICS Red Book And IVS Standards In Modern Valuation Practice
June 4, 2026
In today’s increasingly complex real estate market, valuation professionals face rising expectations for transparency, accountability, and technical accuracy. Clients require valuations for lending, financial reporting, acquisition, litigation, and internal decision-making that are fully aligned with the RICS Red Book Global Standards and International Valuation Standards (IVS). Within this framework, PS1 and PS2 form the backbone of professional valuation practice, ensuring consistency, ethics, and global credibility.
PS1: Compliance with Standards Where a Written Valuation Is Provided
PS1 sets mandatory requirements for all written valuation advice and applies to anyone preparing, signing, supervising, or reviewing valuation reports. Written valuation advice includes formal reports, digital documents, emails, automated outputs, and any recorded valuation communication. Even oral advice remains subject to independence, objectivity, professional scepticism, and IVS-aligned methodology.
Key responsibilities under PS1 include:
● Full compliance by valuers preparing, signing, or supervising reports ● Application to all forms of written or recorded valuation advice ● Prevention of informal or unrecorded opinions bypassing standards ● Ensuring consistency with IVS and RICS Red Book requirements
A major principle of PS1 is that responsibility cannot be avoided through informal communication or lack of signature. Every valuation output must meet the same professional threshold.
Technology is also directly addressed. PS1 confirms that AVMs and software tools cannot produce compliant valuations without independent professional judgement under IVS 105. While technology supports efficiency, valuers remain fully responsible for:
● Verifying data accuracy ● Interpreting outputs ● Applying professional judgement ● Forming a defensible opinion of value
Automated tools such as APIs or data scraping systems are permitted only when confidentiality, data accuracy, and intellectual property rights are respected.
Exceptions under PS1 include:
● Agency and brokerage work ● Litigation and expert witness assignments ● Statutory functions ● Internal valuations with excluded liability
However, PS1 and PS2 always remain applicable, and any departure must be clearly disclosed and documented. No deviation is allowed from PS1 or PS2 themselves. Compliance is monitored through the Valuer Registration Scheme (VRS), reinforcing accountability and public trust.
PS2: Ethics, Competency, Objectivity, and Disclosures
PS2 focuses on the ethical and professional behaviour of valuers. It ensures that valuation work is carried out with integrity, independence, and appropriate expertise, aligned with RICS Rules of Conduct and International Ethics Standards (IES).
Core ethical requirements include:
● Acting with integrity and independence ● Avoiding undue influence or bias ● Maintaining objectivity and transparency ● Applying professional scepticism to all evidence ● Ensuring strict confidentiality of client data
Competency is a central requirement. Valuers must hold relevant qualifications, maintain professional membership, have current market knowledge, and comply with licensing and VRS requirements. Experience must match the complexity of the assignment, especially in specialised asset classes.
Where expertise is insufficient:
● Gaps must be identified early ● Client approval must be obtained ● Specialists may be engaged (engineers, surveyors, accountants, etc.) ● Valuer remains responsible for final interpretation
Independence is equally critical. PS2 requires strict conflict management, early disclosure of risks, and full transparency in line with RICS conflict guidance and international ethics standards. In team-based valuations, all contributors must be recorded, and the supervising RICS Registered Valuer retains final responsibility.
Conclusion
PS1 and PS2 together form the foundation of the RICS Red Book framework. They ensure valuations are:
● Ethically delivered and globally consistent ● Technically robust and IVS-aligned ● Transparent with proper disclosure ● Defensible with evidence and professional judgement ● Compliant with international and jurisdictional standards
In a market shaped by digitalisation, AI tools, and increasing regulatory scrutiny, these standards ensure valuation remains a discipline grounded in integrity, expertise, and global best practice.
