The Association of British Insurers recommend that after the first full building insurance assessment is carried out (when the building is first completed), rebuilding revaluations are carried out every 3-5 years. This should be budgeted for, rather than allowing a sudden spike to occur when the valuation is due.
In addition a desktop valuation should be provided each and every year just before the insurance policy requires renewing. They cost significantly less and using the same surveyor when the next assessment is due often means they are willing to provide this service without the need to re-visit site. Having said that, if there is a change in surveyors then they should attend the development for the first valuation they carry out. This will ensure 100% that the building is insured correctly in each service charge year, confirms that the policy leaseholders pay for is correct and minimises the risk to the landlord, agent and management company.

Reinstatement Cost Assessments: Declared Value

The Reinstatement Cost Assessments (formerly known as the Building Reinstatement Valuations) are to ensure that the declared value of the property is correct on the insurance policy. It is usually calculated on the type of construction, its age, the number of storeys it has, the floor area, its height and the location and amenities. The RICS defines the declared value as ‘the cost of rebuilding and associated on-costs on the basis of a total loss or of such substantial damage that the entire building will require demolition and rebuilding, at the level of costs applying at the commencement of the insurance period without any provision for inflation’.

It is important to be able to identify where this value came from because whilst it could have been professionally valued in the past, it may also have been provided by the developer. If so, this would likely have been based on the sale prices of the flats, making the figure much higher than it should be. In any event the insure/broker will need to know what it is this because this is what the premium is based upon.


The declared value will also determine if the building is over or under-insured.  If it is under insured then insurers can restrict the amount they pay out in proportion to the under valuing (average). For example, if the cost of rebuilding the property was £120,000 but it was insured for 20% less, the insurer can say that the property is under-insured by 20% so it will pay out 20% less from the claim leaving leaseholders ending up paying towards the cost of the claim.

If the building is over insured then the insurers won’t pay out any more than the building costs to rebuild and leaseholders will have paid a higher premium for nothing unless they get a determination from the First Tier Tribunal, requiring management to re-pay the leaseholders any premium over-payments.


Because neither the market value of the property or the council tax valuation band are an accurate guide to the rebuilding cost, and because building costs do not rise and fall with inflation, buildings insurance should contain automatic index linking. This is based on the national average of increasing construction costs and whilst most policies that contain this use the RICS Index, any other index linking that is used will also show on the policy.

Note: Index linking doesn’t take into account regional and building variations.

Related Costs

It is also important to remember that there is no allowance made for anything other than the rebuild cost, so any related costs incurred when the building was constructed such as the cost of the removal of debris, shoring up of party walls, professional fees or unrecoverable VAT, may well not be part of the calculation.

Any other structures within the boundaries of the property will also have to be included as well as ground rent and alternative accommodation. Clarification on whether these have been included in the final figure will need to be obtained from the insurance company.

Note: Under many leases, the costs of the revaluations are usually recoverable from the service charges.

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