The RICS Red Book: what it is, and why valuers’ PI turns on it
What the Red Book is
“Red Book” is the working name for RICS Valuation – Global Standards. RICS describes it as containing mandatory practice for members undertaking valuation services, and it is the document that turns “a valuation” into a professionally regulated output with defined terms, defined bases and a defined reporting format. It incorporates the International Valuation Standards issued by the International Valuation Standards Council.
The current edition was published in December 2024 and became effective on 31 January 2025. RICS presented it as the first edition to make ESG considerations mandatory within valuation practice, and to address the use of increasingly varied data sources and rapidly developing technologies including artificial intelligence — requiring transparency in how they are used and the consistent application of professional judgement.
How it is structured
The edition in force reorganised the valuation technical and performance standards. The VPS sequence now runs:
VPS 1 — terms of engagement. VPS 2 — bases of value, assumptions and special assumptions. VPS 3 — valuation approaches and methods. VPS 4 — inspections, investigations and records. VPS 5 — valuation models. VPS 6 — valuation reports.
That is a genuine renumbering rather than a cosmetic one: bases of value moved from VPS 4 to VPS 2, inspections moved from VPS 2 to VPS 4, reporting moved from VPS 3 to VPS 6, and the old VPS 5 was split into approaches and methods on one hand and models on the other. Anyone quoting a VPS number in an engagement letter, a report template or an expert report needs to check which edition the number belongs to. Professional standards and the valuation practice guidance applications sit alongside the VPS sequence; the detail of those is a matter for the standard itself.
The UK National Supplement
Valuations carried out in the UK also engage the Red Book UK National Supplement. The current version was published on 19 October 2023 and took effect for valuations with a valuation date on or after 1 May 2024. It was reissued in January 2025 so that its cross-references align with the new Global edition. RICS has indicated that the next substantive update is not expected before around 2028.
Why PI claims turn on it
A valuer is judged by the standard of the reasonably competent valuer, and the Red Book is the most concrete evidence of what that standard requires. In practice that produces a familiar claim anatomy:
Terms of engagement. VPS 1 exists because most valuation disputes are really scope disputes: what was being valued, on what basis, for what purpose, subject to what assumptions, and who was entitled to rely on the result. A valuation with a properly agreed and recorded scope is a much harder target.
Basis of value and special assumptions. Market value, market rent, investment value and fair value are not interchangeable, and a special assumption changes the answer. Using the wrong basis, or applying a special assumption without recording it, is a classic negligence allegation.
Inspection and investigation. What was inspected, what was assumed, what was not verified — and whether the report says so.
Reporting. The report is the document the court reads. Limitations that are not in it are very hard to run later.
Departures. Where a valuer departs from the Red Book, the departure has to be identified and justified. An unrecorded departure is close to indefensible.
Our wiki covers the practical PI angle in Red Book valuations: PI considerations for chartered surveyors and scope of duty in valuer PI claims. Surveying practices that would like the market handled for them can read about a specialist broker for surveyors PI.
The case law a valuer’s policy lives with
Reliance and the duty owed to third parties: Smith v Eric S Bush and Yianni v Edwin Evans. What a valuer must report beyond the number: Mortgage Express v Bowerman. Instruction scope and the limits of the retainer: Mortgage Express v Countrywide Surveyors. The boundary of the assumption of responsibility: Steel v NRAM and Caparo v Dickman. How loss is measured once negligence is established: Manchester Building Society v Grant Thornton. Damages for distress and defective survey work: Watts v Morrow.
What underwriters ask valuation firms
The recurring questions are the mix of work by valuation type, the proportion of lender-instructed work, whether any single instruction type dominates, the firm’s highest single valuation figure, its file review and second-signature arrangements, and its claims and circumstance history. Firms doing loan security work for lenders attract closer attention than those doing owner-occupier advisory work, because the loss on a lender claim is driven by the lending decision rather than by the size of the fee. See our guide to surveyors’ PI insurance and choosing a PI limit.
Frequently asked questions
What is the current edition of the RICS Red Book?
RICS Valuation – Global Standards, published in December 2024 and effective for valuations from 31 January 2025. It incorporates the International Valuation Standards and introduced mandatory content on ESG and on data and technology use. In the UK it is read with the Red Book UK National Supplement, published on 19 October 2023 and effective from 1 May 2024, reissued in January 2025 to align its references.
Is Red Book compliance mandatory?
RICS describes the Red Book as setting out mandatory practice for members undertaking valuation services. Certain limited categories of work are outside the mandatory reporting requirements, and a valuer may depart from the standards where it is appropriate — but any departure has to be identified and justified. An unexplained departure is difficult to defend in a negligence claim.
Why did the VPS numbers change?
The current edition reorganised the valuation technical and performance standards to align with the International Valuation Standards. Bases of value moved to VPS 2, valuation approaches and methods to VPS 3, inspections and records to VPS 4, valuation models to VPS 5 and reports to VPS 6, with terms of engagement remaining at VPS 1. Template documents that cite older VPS numbers need updating.
Does a Red Book valuation give a third party a right to sue?
Not automatically. Liability to someone other than the client depends on whether the valuer assumed responsibility to that person, which is why the terms of engagement and any reliance wording matter so much. The case law runs from Yianni and Smith v Eric S Bush through to Steel v NRAM, and the practical protection is a clear statement in the report of who may rely on it and for what purpose.
Does ESG now have to be considered in a valuation?
The current edition made ESG a mandatory consideration: valuers are expected to record relevant ESG information and to consider factors capable of influencing value. It does not turn a valuer into a sustainability consultant. It does mean that the absence of any ESG consideration in a file is harder to explain than it was under the previous edition.
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