Reviewed by Matthew Bartlett, Director · Last reviewed 8 July 2026
Chartered surveyors' professional indemnity in the UK is priced by an underwriter reading a submission against the Royal Institution of Chartered Surveyors' Rules of Conduct and the practice's specific discipline mix. RICS sets a minimum limit that scales with turnover, but the premium itself moves with the mix of valuation, building surveying, quantity surveying, and property management work, together with claims history, contract exposure, and Red Book valuation activity. This page sets out what actually drives the number for surveying practices and how Apex Insurance Brokers approaches a surveyors' PI submission.
Turnover is the anchor. Underwriters rate on gross professional fee income, and the rate itself moves sharply with discipline mix. Valuation work, particularly Red Book valuations for secured lending, is the highest-rated activity in the sector because of the direct exposure to lender losses on default. Building surveying carries a distinct risk profile driven by dilapidations, defects reporting, and party wall work. Quantity surveying, project management, and property management each rate differently. A firm with 60% Red Book valuation for lenders will attract a very different rate to a firm with 60% commercial property management at the same turnover.
Claims and circumstances history is central. The valuation profession has been on the market's radar for many years, and any historic notified claim, particularly on secured lending valuations, will feature heavily in the rating. The size and seniority of the fee-earning team, the ratio of RICS-registered valuers to unregistered support, supervision arrangements, and file-review processes are all factored in. Firms doing significant work on higher-risk buildings under the Building Safety Act 2022 will see that reflected in the rating.
Limit of indemnity is the next lever. RICS sets a turnover-banded minimum limit (see below), but the practice's actual contractual exposure often drives the number higher. Retention (self-insured excess) is negotiated on the firm's ability to absorb losses at the small end, and specific higher excesses may apply to valuation claims where the wording is structured that way.
RICS Rules of Conduct Rule 9 requires firms regulated by RICS to hold adequate and appropriate PII cover with a compliant policy. The RICS minimum PII scale is turnover-banded: firms with turnover up to £100,000 must hold a minimum limit of £250,000; up to £200,000 turnover must hold £500,000; and above that a minimum of £1 million. Firms above larger turnover thresholds face higher required minimums.
Run-off cover is required for six years on cessation of practice under the RICS minimum wording, and the policy must be placed with an insurer that meets the RICS listed criteria (the RICS "Insurance Requirements" list). Cover must be on a claims-made basis and must include defence costs. The RICS Red Book (Global Standards) sets specific valuation standards, and firms doing Red Book valuations should ensure their PI wording does not carve out valuation work that they actually undertake.
The Building Safety Act 2022, and in particular section 135, has extended the limitation period for dwellings and has changed how insurers view surveyors' exposure to historic residential work. Firms with material exposure to residential surveys, building safety reports, or cladding-adjacent work will find this feature in the underwriter's questions and the rating.
Apex Insurance Brokers is authorised and regulated by the Financial Conduct Authority (firm reference number 724952) and places surveyors' PI with insurers on the RICS list. We are a named-broker practice: Matt Bartlett or a named colleague reads every submission personally, drafts the presentation to reflect the discipline mix, and negotiates on the firm's behalf.
Our client retention rate across the book is approximately 95%. We work with sole practitioners, small practices, and multi-disciplinary firms. Our approach is to build the submission from the ground up on the current fee split by discipline and by client type, so that the underwriter sees the risk as it actually is rather than as a rolled-forward version of last year's numbers.
Any range published on a web page is a starting point for conversation, not a quote. With that on the record: a sole practitioner doing lower-risk building surveying or QS work at modest turnover and clean claims will typically see primary PI premiums starting in the low thousands of pounds a year. Practices with material Red Book valuation exposure to lenders should expect a materially higher rate on income.
Mid-sized practices with a mixed commercial book often pay a rate on turnover in the mid single digits of a percent, but the number moves sharply with valuation mix, residential exposure, and limit purchased. Practices with clean records and a lower-risk work profile should expect the market to compete for them. The specific figure comes out of the underwriter's assessment of the submission, not from a table.
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