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Red Book valuation: what it is, what it costs and when a seller needs one

Red Book valuation explained: what an RICS valuation is, what firms publish as fees, and when a seller needs one for probate, divorce or tax.

4 min read
Last reviewed 5 November 2026
By Your Property Check team

Part 1 of 6

What a Red Book valuation is

General information, not legal or tax advice. The Red Book is the common name for "RICS Valuation - Global Standards", published by the Royal Institution of Chartered Surveyors (RICS). RICS describes it as detailing mandatory practices for RICS members who carry out valuation services. So a Red Book valuation is a valuation prepared by an RICS member to those standards.

RICS Firms says residential valuations of this kind should be carried out by an RICS surveyor who is registered as an RICS valuer. The Red Book defines market value and requires the valuer to use market-informed methods backed by evidence. A typical job involves a short visit and desk research, and the surveyor may look at how the property was built, its size, outbuildings, condition and recent improvements, along with location. It is not a building survey, and RICS Firms is clear about that.

Part 2 of 6

Red Book valuation vs an estate agent's valuation

An agent's appraisal is an opinion to help set an asking price. A Red Book valuation is a formal report. They answer different questions, and neither is a sale price. Only an actual buyer sets that.

	Estate agent valuation	Red Book valuation
Who prepares it	An estate agent	An RICS registered valuer
Standards	Agent's own judgement	RICS Valuation Global Standards
Typical use	Choosing an asking price	Where the figure must be defensible
Cost	Often free, but ask the agent	A fee, quoted by the firm

Part 3 of 6

When might you need one?

RICS Firms lists the main valuation types: mortgage valuations for lenders, HomeBuyer valuations, shared ownership and Help to Buy valuations (needed when you sell or repay), Right to Buy valuations, and tax or legal valuations. It says the tax and legal ones are most commonly used for inheritance tax and divorce proceedings, and can also be needed for capital gains tax.

Probate and inheritance tax. GOV.UK tells executors to estimate the value of the estate before applying for probate and says you can hire a professional. The GOV.UK pages we read do not say a Red Book valuation is required, so check with the solicitor or HMRC. Our article on inheritance tax on a house has worked figures.
Divorce. RICS Firms names divorce proceedings as one of the most common uses of tax and legal valuations. Ask your solicitor which kind of valuation they want.
Capital gains tax. GOV.UK says HMRC can check your valuation, and you can use a post-transaction valuation check, allowing at least three months for a reply.
Shared ownership and Right to Buy. The valuation fixes what a share is worth. For Right to Buy, RICS Firms says you can get your own valuation to challenge the landlord's.

For an ordinary sale on the open market you do not need one. The lender instructs its own valuation for the buyer's mortgage.

Part 4 of 6

What does a Red Book valuation cost?

No official source gives a price. RICS and RICS Firms say valuations are paid for but state no amount, and RICS says surveys start at "a few hundred pounds", with some bespoke services over £1,000. The fees below are what two surveying firms published when we checked on 5 November 2026. Prices are quotes, not averages, and VAT, location and property value all change them.

Firm's published fee	Amount	VAT
Standard residential valuation, one unit, within the M25, lowest value band (page updated 30 October 2026)	£500, or £600 with VAT	Shown both ways
Matrimonial valuation, same basis	£600, or £720 with VAT	Shown both ways
Lease extension valuation, same basis	£650, or £780 with VAT	Shown both ways
Standard residential valuation, second firm	£500 to £700, up to £1,500 or more for larger or more valuable homes	Not stated

The second firm's page also gives a lower range of £250 to £500 elsewhere, so its own figures disagree. We have not tried to reconcile them. Ask each firm for a fixed fee in writing and what is included.

Part 5 of 6

Red Book valuation vs an automated estimate

A free online estimate is not a Red Book valuation and cannot replace one where a rule asks for it. But it can show roughly where a house should sit. We test our own estimate against real sales. In our July 2026 backtest (data/backtests/backtest-2026-07.json) it used only sales made before each month, with no look-ahead, and compared 600 estimates against what the homes then sold for.

Measure (600 sales, July 2026 test)	Result
Median absolute error	12.2%
Estimates within 10% of the sale price	41.7%
Estimates within 20% of the sale price	70.2%
Actual price fell inside our stated range	75.8%
Median bias	-1.3%

So an automated estimate is a guide with a margin of error, wider than many people expect. This is exactly why a formal valuation exists for high-stakes uses. Our guide to finding out how much your house is worth compares the options.

Part 6 of 6

How to decide

If a solicitor, lender, court or HMRC asks for a valuation, ask what they will accept. If it must come from an RICS registered valuer, get quotes from more than one firm. If you only want a price to list at, start with several agents and real sold prices. Our free house value check shows a range from Land Registry sales in your postcode.

This page is general information, not legal or tax advice.

Our take

Pay for a Red Book only when someone requires it

Our view: a Red Book valuation is the right tool when a solicitor, court, lender or HMRC needs a defensible figure, and the wrong one when you simply want a listing price. No official source gives a price, so firm quotes vary and are worth comparing. The common mistake is paying before asking what the other party will accept.

For a first idea of value, our free house value check gives a range from real HM Land Registry sold prices in your postcode, with the comparable sales and working shown. It is not a formal valuation.

Check my value

Our opinion, drawn from the facts on this page: not advice and not a forecast. We earn from OfferCheck reports and from introducing sellers to cash buyers, so weigh it with that in mind (see our disclosure). We are not authorised or regulated by the FCA.

Questions, answered

Frequently asked questions

What is a Red Book valuation?

A formal valuation by an RICS registered valuer following the RICS Valuation Global Standards, known as the Red Book. RICS describes it as setting mandatory practices for its members who value property.

How much does a Red Book valuation cost?

No official price exists. On 5 November 2026 one surveying firm published £500 plus VAT (£600) for a standard residential valuation within the M25, lowest value band. Another quoted £500 to £700. Get fixed quotes.

Do I need a Red Book valuation to sell my house?

No. For an ordinary sale an agent's valuation and sold prices are enough to set an asking price. A formal valuation is used where a figure must be defensible, such as inheritance tax, divorce or tax disputes.

Is a Red Book valuation the same as a survey?

No. RICS Firms stresses that a valuation is not a building survey. It gives a market value and does not report on the condition of the property in the way a survey does.

Is a Red Book valuation more accurate than an online estimate?

It is a formal, evidence-based opinion by a qualified valuer, who may visit the property. In our July 2026 backtest, an automated estimate's median error was 12.2% against real sale prices.

Where this comes from

Sources

Last reviewed 5 November 2026 by the Your Property Check team. This page is general information, not legal, tax or financial advice. For your own situation, speak to a conveyancing solicitor or another qualified professional.