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Reinstatement Cost Assessment · Regulated by RICS

Insure your building for what it costs to rebuild.

The right rebuild figure for your buildings insurance — whether you manage a block, share the freehold of a converted building, or own your own home. It's an assessment of cost, not market value, so your cover is neither too high nor dangerously short.

Standalone reports from £500 + VAT
Buying a home? Add a reinstatement figure to your survey — price on request →
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Regulated by RICS
Reports within a week of inspection
London & the Home Counties
~70%of UK buildings mis-insured

It's widely estimated that around seven in ten UK buildings are either over- or under-insured. Over-insure and you pay more than you need to every year; under-insure and the policy may not pay out in full when it matters most. A reinstatement cost assessment fixes the figure your cover is built on — which matters most where one policy covers a whole block.

The key distinction

Rebuild cost is not market value.

This is the single most important thing to understand — and the most common reason buildings end up mis-insured. The two figures answer completely different questions.

Market value

What it's worth

What someone would pay to buy the property — including the land, location and demand. It's the figure for selling, lending or tax. It is not what you insure for.

Reinstatement cost

What it costs to rebuild

What it would take to rebuild from the ground up after a total loss — demolition, debris removal, professional fees and rebuilding to the same size, layout and condition. This is the figure your buildings insurance should be based on.

What goes into the figure

What our assessment considers.

Every assessment is specific to your building. Three factors do most of the work.

01

Location

Rebuilding the same property in different parts of the country can cost very different amounts. We assess costs for where your building actually stands.

02

Construction

For most properties we cost a like-for-like rebuild. For non-standard construction we cost a modern equivalent instead.

Non-traditional builds: large panel system, Wimpey No-Fines, timber-framed, and BISF (British Iron and Steel Federation).
03

Condition

The figure reflects rebuilding to the same external and internal condition — including fixtures, fittings and the mechanical and electrical installations, plus boundary structures where relevant.

Who it's for

Blocks, share-of-freeholders and homes.

Most of our reinstatement work is for the people responsible for insuring a whole building.

Block managers & freeholders

Blocks of flats

For managing agents and freeholders arranging buildings insurance for a block — the right rebuild figure, and a sound basis to apportion the insurance contribution fairly between leaseholders.

Share of freehold

Converted houses & small blocks

Own a share of the freehold with your neighbours? We assess the whole building so the cover you arrange together is right — neither over the odds nor short if you ever claim.

Owners & buyers

Homes, flats & maisonettes

Individual houses, flats and maisonettes, including buildings converted into flats. Provided on its own, or added to a homebuyer survey when you're buying.

Already extending a lease or buying your freehold with us? We can prepare the reinstatement assessment for the same building at the same time. See leasehold reform →
What it costs

Two ways to instruct us.

Standalone assessment
From £500 + VAT

A reinstatement cost assessment commissioned as its own report — for a block, a converted building or a home. Blocks and larger buildings quoted individually.

Request a quote online →
Added to a homebuyer survey
Price on request

Buying a home? A reinstatement figure can be added to your Level 2 or Level 3 survey as an addendum — a cost-effective way to get it alongside your inspection.

See Home Surveys →
Turnaround · within a week of inspection Coverage · London, Hertfordshire, Buckinghamshire, Essex & parts of Surrey and Sussex
Why Websters

Assessed properly — and joined up.

Your assessment is carried out by one of our RICS surveyors and set out clearly enough to give your insurer with confidence. Because we also handle lease extensions and collective enfranchisement, we often already know your building and your leases — and can combine instructions to save you time.

Regulated by RICS
Chartered surveyors, regulated by the Royal Institution of Chartered Surveyors.
Leasehold specialists (ALEP)
We act on lease extensions and freehold purchases for the same buildings.
Fast, clear reports
Usually within a week of inspection, written in plain English.
In practice

One building, one team.

Ealing · London W5

Victorian terrace converted to four flats

A four-storey Victorian mid-terrace reconfigured into four self-contained flats. Our assessment covered the full fabric of the building — walls, floors, roofs, stairs, partitions, doors, windows and the internal M&E — plus boundary walls, retaining walls, patio and canopy, so the owners were neither over- nor under-insured on the shared policy.

Often part of a bigger picture

Enfranchisement today, reinstatement tomorrow.

Many of our reinstatement clients are share-of-freeholders and block managers we're already helping. Once we've handled a collective enfranchisement or lease extension for a building, we'll often prepare its reinstatement assessment too — one team that already knows the property.

Explore leasehold reform →
Common questions

Reinstatement cost, answered.

What is a reinstatement cost assessment?
It's a professional estimate of what it would cost to rebuild a property from the ground up after a total loss — including demolition, debris removal, professional fees and rebuilding to the same size, layout and condition. It's the figure your buildings insurance should be based on.
Is the rebuild cost the same as the market value?
No. Rebuild cost is an assessment of cost, not value. It excludes the land and is often very different from market value. Insuring against market value rather than rebuild cost is one of the most common causes of mis-insurance.
How much does it cost?
A standalone reinstatement cost assessment starts from £500 + VAT, whether for a block, a converted building or a home. If you're buying and having a homebuyer survey, a reinstatement figure can be added to your report as an addendum — price on request.
How long does it take?
Most reports are delivered within a week of inspection, and often sooner.
What about non-standard construction?
For non-traditional builds — large panel system, Wimpey No-Fines, timber-framed or BISF (British Iron and Steel Federation) properties — we assess the cost of a modern equivalent rather than a like-for-like rebuild.
Do you assess blocks of flats and share-of-freehold buildings?
Yes. We assess individual homes, buildings converted into flats and maisonettes, and blocks of flats across London and the Home Counties. For blocks, the figure also helps apportion the buildings-insurance contribution fairly between leaseholders.
Can you handle our lease extension or freehold purchase too?
Yes. As ALEP members we act on lease extensions and collective enfranchisement, and we often prepare a reinstatement assessment for the same building — one team that already knows the property and the leases.