Man warehouse worker with a tablet

What are reinstatement cost assessments and how are they conducted?

National coverage
Tailored support
Local knowledge
Free consultation
Get in touch today
Speak to an expert - 0333 200 2039

14/01/2025

Author: Ian Harrington

Building consultancy
Updated 5th November 2026

Key takeaways

  • A reinstatement cost assessment (RCA) calculates the cost to rebuild a property, including demolition, professional fees, and statutory fees.
  • RICS recommends a full RCA every three years, and an update after significant changes to the building or its contents.
  • Under-insurance can trigger the Condition of Average clause, which reduces your claim in proportion to the shortfall.
  • Over-insurance can mean unnecessarily high premiums, and specialist buildings often need expert input.

Insuring your buildings for the right amount

A reinstatement cost assessment shows what it would cost to rebuild your property, so you can insure it correctly. This guide explains how an assessment works and when you need one.

What is the reinstatement cost of a property?

Reinstatement Cost Assessment (RCA) is the basis adopted by the Royal Institution of Chartered Surveyors (RICS) for undertaking an appraisal of property and plant and machinery contents for insurance purposes. The term reinstatement refers to repairing, reconstructing or renewing assets to a condition equal to but not better than when new. This assessment is all-encompassing and can often include inspection and reporting on a wide range of properties of differing size, type and use, incorporating complex structures and installations.

Regardless of whether you own a single property or a wide-ranging portfolio, ensuring you have the correct insurance cover for buildings and contents is essential. It is not simply a case of being insured; it often transpires that property and contents are either under-insured – leaving you highly exposed to potential costs in the event of a claim – or over-insured, leading to unnecessarily high premium payments.

How often should you get an RCA?

RICS recommends that full RCAs are carried out every three years although updated RCAs should be undertaken whenever there are significant changes to the buildings, or investment/downsizing in the plant and machinery/contents. 

What happens during a reinstatement cost assessment?

In undertaking the reinstatement cost assessments of buildings and/or contents for insurance purposes, all buildings are visited for assessment by a qualified surveyor, and assessments are undertaken on a building-by-building basis.

Building schedules and schedules of main plant and machinery/contents, along with grouped figures for general contents, are undertaken on site. Office-based investigations are undertaken with research through BCIS published data, machinery manufacturers and agents, internet research and internal databases.

 Reinstatement costs are calculated to rebuild the property, with costs of demolition, professional fees, any statutory authority fees and the relevance of current statute, which could impact the reinstatement cost assessment itself.

The assessments being undertaken on a building-by-building basis allow for broker analysis of the values at risk and estimated maximum losses, which should assist in their insurer negotiations. 

Insurance valuations for specialist buildings

Challenges can often arise in the area of specialist buildings. Surveyors will likely be accustomed to assessing traditional buildings such as factories, office blocks or educational establishments, though an experience of valuing, assessing and appraising listed buildings or specialist structures will often be required.

In respect of educational buildings – both private and public – this is an area in which we have particular widespread expertise; every year we undertake insurance valuations which often comprise classrooms, laboratories, conference space, lecture theatres and canteens.

In some cases where a client may own unique buildings or structures, the surveyor may be reliant on co-operation from industry experts in deciding on rebuild costs for these type of structures; drawing on their relevant expertise and experience to advise.

It is critical that reinstatement cost assessments provide the full cost of demolition and rebuilding, together with any other allowances required by the lease terms, so the property owner or manager can arrange the appropriate level of insurance cover. Failure to do so could result in a claim for negligence.

Understanding the Condition of Average clause

In the event that the buildings or plant and machinery/contents are under-insured, the insurance provider may invoke the Condition of Average Clause, where the total claim is reduced proportionally to the value of under-insurance. Clearly, this could have devastating effects, with the policyholder liable for the shortfall in the payout.

BTG Eddisons also act for the majority of major banks in undertaking valuations for both lending and insurance purposes. We typically provide reinstatement values for hundreds of buildings and contents every year.

Book your reinstatement cost assessment

Our reinstatement cost assessment service covers commercial buildings and contents, including specialist and educational buildings. We bring a changemaker mentality to every assessment, so you can insure with confidence and not discover a shortfall at claim time.

To book your assessment, complete the form below.

Get in touch with the BTG Eddisons team

Please contact us for more details and information.

Related reading

View All
Seven common challenges office owners and occupiers face
Office interior
Insights

Seven common challenges office owners and occupiers face

Read More
What did we sell in October?
BTGEPA   The Old Vicarage, Highgate, Sheffield   external
Insights

What did we sell in October?

Read More
Central London office market update: Autumn 2026
London offices
Insights

Central London office market update: Autumn 2026

Read More
Fareham commercial property market update
Fareham Town Centre
Insights

Fareham commercial property market update

Read More
Meet the team
CTA grid   Our Team

Our team

We are proud to employ more than 550 talented individuals working across a multitude of disciplines.

Find your nearest office
uk map dotted orange

Office finder

BTG Eddisons is rapidly growing; emphasised by our nationwide network of 35 offices across the UK.

Get in touch with us
CTA grid   Contact Us

Contact us

We are ready to take your call and can quickly pass you through to the right department.

Sign up to our newsletter
CTA grid   Newsletter

Newsletter

Join thousands of property managers, occupiers, landlords and investors receiving the latest insights.

This site uses cookies to monitor site performance and provide a more responsive and personalised experience. You must agree to our use of certain cookies. For more information on how we use and manage cookies, please read our Privacy Policy.