Valuations

RICS Property Valuations Explained: When Do You Need One?

Marcus Okafor 15 December 2025 7 min read
RICS registered valuer carrying out a property valuation in a Hampshire home

A property valuation sounds straightforward โ€” someone tells you what your home is worth. But a formal RICS valuation is something quite specific: a professionally produced document, carried out by a RICS registered valuer to a recognised standard, that holds legal and financial weight. Here's everything you need to know.

I've been a RICS registered valuer in Basingstoke for over eight years, and the question I'm asked most often is: "Do I need a proper valuation, or will an estate agent's estimate do?" The answer depends entirely on what you need the valuation for. Let me explain.

The Difference Between a Market Estimate and a Formal RICS Valuation

An estate agent's valuation (often called a market appraisal) is an informal estimate of what your property might achieve on the open market. It's useful for deciding whether to sell and setting an asking price, but it has no legal standing and won't be accepted for formal purposes.

A formal RICS valuation is carried out by a RICS registered valuer to the RICS Valuation โ€“ Global Standards (the "Red Book"). It involves a physical inspection of the property, analysis of comparable market evidence, and production of a written report that can withstand scrutiny from solicitors, mortgage lenders, HMRC and courts.

When Do You Need a Formal RICS Valuation?

1. Probate (Estate Administration)

When a property is part of a deceased person's estate, HMRC requires a formal valuation for inheritance tax purposes. This must be carried out by a RICS registered valuer and will be scrutinised by HMRC if challenged. Getting a low-ball informal estimate is risky โ€” HMRC can and do challenge under-valuations, which can result in penalties.

2. Divorce and Separation

When a couple separates and the family home needs to be valued for the division of assets, courts require a formal RICS valuation. Both parties may commission their own valuation, or a single joint expert can be agreed upon. Our Basingstoke valuers regularly carry out valuations for this purpose.

3. Help to Buy Equity Loans

When you sell a Help to Buy property or want to staircase out of a Help to Buy equity loan, Homes England requires a formal RICS valuation. The loan repayment is based on the current market value, so the valuation has real financial consequences.

4. Shared Ownership Staircasing

If you own a shared ownership property and want to buy more shares ("staircase"), the housing association will require a RICS valuation to determine the current value of the additional shares. Similarly, when selling a shared ownership property, both parties typically require a formal valuation.

5. Challenging Your Mortgage Lender's Valuation

If your mortgage lender has down-valued the property you're buying (valued it below the agreed purchase price), a formal independent RICS valuation can be used to challenge this. This is particularly relevant in Basingstoke's competitive property market, where agreed prices occasionally exceed automated valuation model outputs.

6. Insurance: Rebuild Cost Assessment

Your buildings insurance should be based on the cost to rebuild your home โ€” not its market value. Most homeowners are under-insured because they use market value as the basis. A rebuild cost assessment gives you the correct figure, based on the cost of demolition and construction rather than sale value. See our related article: Rebuild Cost Assessments: Why Your Buildings Insurance Might Be Wrong.

7. Capital Gains Tax

If you're selling a property that's not your primary residence, or a property that was previously rented out, a formal valuation at the point of acquisition (or change of use) may be required for capital gains tax calculation purposes.

What Does a RICS Valuation Involve?

A formal RICS valuation involves:

  • Physical inspection of the property (internally and externally)
  • Research into comparable sales in the local market
  • Assessment of location, condition, size, and features
  • Analysis of market conditions
  • Production of a written Red Book compliant report

The inspection itself typically takes 45 minutes to 1.5 hours depending on property size. The report is usually delivered within 3โ€“5 working days.

Get a RICS Valuation in Basingstoke

Our RICS registered valuers provide formal valuations across Basingstoke and Hampshire. Whether you need a probate valuation, a Help to Buy assessment, or a challenge to your lender's figure, we can help. Get in touch for a free, no-obligation quote. For full details of our valuation service, see our property valuations page.

Marcus Okafor RICS Registered Valuer Basingstoke

Marcus Okafor

Senior Property Surveyor & Valuer

Marcus handles all RICS registered valuations for Basingstoke Surveyor, with extensive experience in residential property and land valuations across Hampshire.