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Commercial underinsurance starts with the wrong figure.

Tenant fitout, specialist plant and non-standard construction make commercial reinstatement costs uniquely complex - and uniquely easy to understate. A RICS assessment is the only defensible way to establish the correct sum insured.

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Commercial Reinstatement Cost Assessment

RICS-regulated assessments accepted by all UK commercial insurers without amendment.

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The Problem

Why commercial reinstatement is so complex to get right.

Commercial buildings carry hidden cost layers that generic tools ignore entirely. Three drivers account for the majority of commercial underinsurance in the UK:

  • Tenant fitout

    Category A and B fitout installed by tenants is often excluded from building schedules but must be reinstated - adding substantial cost.

  • Specialist plant

    HVAC, lifts, substations and process equipment carry high replacement values that no index can capture without a site assessment.

  • M&E services

    Mechanical and electrical infrastructure in offices, retail and industrial buildings routinely represents 20–40% of rebuild cost.

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How approaches compare

Online calculators

Miss fitout, plant and M&E - wrong for most commercial properties.

Index-linking alone

If the base figure was wrong, index-linking compounds the error.

Old or inherited valuations

Build costs rose 30%+ since 2020 - pre-pandemic figures mislead.

RICS Reinstatement Cost Assessment

Captures all cost layers. Accepted by all UK insurers. PI-insured and defensible.

Own multiple commercial properties? See our portfolio assessment service ?

Property Types We Assess

Coverage

Every commercial property type, covered.

From single-tenant industrial units to multi-let city centre offices, our RICS-regulated assessors have the sector knowledge to establish an accurate reinstatement cost - whatever the asset class.

Mixed-use developments are assessed under a single instruction, with the output separated by use class so your insurer has clean, compliant figures for each element.

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Our Expertise

Specialist assessments for specialist buildings.

Tenant Fitout Captured

We identify and value Category A and B fitout installed by occupying tenants - a cost layer that online tools and index-linked valuations routinely miss entirely.

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Listed Commercial

Grade I, Grade II* and Grade II commercial buildings assessed by surveyors experienced in historic fabric, specialist materials and Heritage England compliance.

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Mixed-Use Assessment

A single instruction covers the entire development. Output is separated by use class - residential and commercial figures presented cleanly for your insurer.

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FAQ

Common questions.

Direct answers to the most common questions about commercial Reinstatement Cost Assessments.

Online calculators cannot account for tenant fitout, specialist plant, complex M&E services, or bespoke construction all of which form part of the commercial reinstatement cost. A RICS-regulated Reinstatement Cost Assessment captures the full rebuild cost specific to your building. Any shortfall at claim triggers the average clause, and insurers apply it without exception.

A formal RICS rebuild cost assessment is required at least every three years, with annual BCIS-indexed adjustment in between. UK construction costs rose over 30% between 2020 and 2024 any commercial Reinstatement Cost Assessment not formally reviewed in that period is likely to be materially inaccurate. Our 3-Year Protection Plan handles both requirements under a single instruction.

Yes. Our on-site Reinstatement Cost Assessment service covers all listed property categories, including Grade I, Grade II* and Grade II commercial premises. Listed commercial properties require physical inspection a desktop rebuild cost assessment cannot capture heritage materials, conservation consent costs or specialist trades.

Yes. Mixed-use developments containing both residential and commercial elements are assessed under a single Reinstatement Cost Assessment instruction, with the declared value output separated by use class for the insurer. This ensures the commercial reinstatement cost and the residential rebuild cost are each correctly declared.

Yes. Every RICS-regulated Reinstatement Cost Assessment and rebuild cost assessment we produce is accepted without amendment by all UK commercial insurers and brokers. Each report documents the declared value, methodology, key assumptions and review date in the format the market expects.