Reinstatement Cost Assessment London

RICS-regulated insurance rebuild cost advice for London homes, residential blocks and commercial property: Day One reinstatement values, declared value review, under-insurance risk and buildings insurance valuation support.

Rebuild Cost AssessmentDay One ValuesUnder-Insurance Review
RICS Regulated Firm No. 923064Professional Indemnity InsuredCompany No. 17085122
Get Started

Request a reinstatement cost assessment

Tell us about the property, the insurance renewal position and any deadline. After the initial enquiry, we will confirm the appropriate way to send notices, drawings or reports.

Prefer to talk it through first? Call 020 7101 4590.

Insurance Rebuild Cost

Rebuild cost assessment and reinstatement cost assessment across London

A reinstatement cost assessment determines the cost of rebuilding your property from scratch for insurance purposes. It is the professional rebuild cost assessment behind the declared value, Day One reinstatement value and sum insured that a buildings insurance valuation relies on.

Our assessments consider the full reinstatement scenario: demolition, site clearance, rebuilding to current building regulations, professional fees, statutory charges, VAT where relevant and inflation allowances. We assess houses, period mansion blocks, converted buildings, modern apartment blocks, mixed-use assets and commercial property across London.

Under-insurance is common and expensive: if the declared sum insured is materially below the true rebuild cost, an average clause can cut the payout on even a partial claim, leaving owners and leaseholders to fund the shortfall. London pushes rebuild costs above many owners’ assumptions — high labour and access costs, party wall and scaffolding constraints, conservation-area and listed-building reinstatement obligations, and the cost of rebuilding to current standards rather than the original specification. We use RICS professional standard principles and BCIS-style cost benchmarking alongside property-specific inspection findings, so the figure is transparent and reviewable.

Before You Instruct

What to send, and what you receive

Send the property and insurance details and we will confirm the assessment scope and fee before you instruct.

What to send before we quote

  • The property address, type, size and construction
  • The current declared value and insurance renewal date
  • Available drawings, floor areas or previous assessments
  • The buildings, outbuildings and external works to be included
  • Access arrangements and any insurer or broker deadline

What you receive

  • A clear rebuild cost report for the agreed insurance purpose
  • Demolition, site clearance, professional fees and inflation assumptions
  • The Day One figure and basis where included in the scope
  • The assessment assumptions and exclusions stated clearly

A reinstatement cost assessment is for insurance purposes; it is not a market valuation, premium calculation or guarantee of insurer acceptance. Ask what the reinstatement cost report would include.

What This Covers

Scope of our reinstatement cost assessments service

Residential Reinstatement

Reinstatement cost assessments for houses, flats, mansion blocks and residential developments, considering period features and modern specifications.

Commercial Reinstatement

Insurance valuations for offices, retail units, warehouses and mixed-use commercial properties.

Block Insurance Valuations

Reinstatement assessments for residential blocks, housing associations and property management companies.

Day One Reinstatement

Assessment of Day One reinstatement costs for insurance declaration purposes, including professional fees and inflation allowances.

When To Instruct Us

When to instruct a reinstatement cost assessment

Clients usually come to us with an insurance renewal or an under-insurance concern, not the term RCA. These are the typical triggers.

  • Your building insurance renewal is due.
  • The declared value has not been reviewed for several years.
  • You manage a residential block or mixed-use building.
  • The property has been extended, refurbished or altered.
  • You are concerned about under-insurance or over-insurance.
  • A lender, insurer or managing agent requires an updated figure.
  • You need a Day One reinstatement cost for insurance purposes.
  • A freeholder, RMC or RTM needs evidence for block insurance.
Key Distinction

Reinstatement cost is not market value

Market value is what a property may sell for. Reinstatement cost is the estimated cost of rebuilding the property after total loss, including demolition, site clearance, professional fees, statutory costs and VAT where applicable. The two figures can be very different, and insuring on the wrong basis is the most common cause of under-insurance.

What Is Included

What a reinstatement cost assessment includes

  • Building inspection
  • Measurements / floor area review
  • Construction type and age
  • Demolition and site clearance allowance
  • Rebuild cost
  • Professional fees
  • Statutory charges
  • VAT position where relevant
  • Inflation / Day One uplift
  • Unusual construction or access constraints
  • Outbuildings, garages and boundary structures where included
  • Assumptions and exclusions clearly stated
Day One & Declared Value

Day One reinstatement and declared value

  • The Day One value is the estimated rebuild cost at policy start.
  • Insurers may apply inflation provisions on top of the Day One figure.
  • The declared value and the sum insured are not always the same.
  • Under-insurance can trigger an average clause, reducing a claim payout.
  • Over-insurance means paying unnecessary premium.
  • Regular review keeps the declared value defensible at renewal.
Residential Blocks

RCA reports for residential blocks

Block insurance reinstatement work is a core focus, for freeholders, RMCs, RTM companies, managing agents, housing associations and mixed-use blocks.

  • Freeholders, RMCs and RTM companies
  • Managing agents and housing associations
  • Mansion blocks and converted houses
  • Mixed-use blocks
  • Communal areas and plant rooms
  • Lifts, roofs and basements
  • External works and boundary structures
  • Whole-building reinstatement for block insurance renewal
Process

How our RCA process works

01

Initial property and insurance review

We confirm the property, the current declared value and the insurance position.

02

Confirm scope and building details

We agree the scope, what is included (outbuildings, communal areas) and any assumptions.

03

Site inspection and measurement review

We inspect the building and review or take measurements and floor areas.

04

Construction type and reinstatement assumptions

We assess construction, age, specification and any abnormal cost drivers.

05

Rebuild cost calculation

We calculate the reinstatement cost including demolition, fees, statutory costs and VAT where relevant.

06

Day One / inflation allowance review

We set out the Day One figure and the basis for any inflation allowance.

07

Report issued for insurance renewal or portfolio records

A clear report is issued for the renewal or for portfolio and block records.

08

Review cycle agreed

A review cycle is agreed, usually after major works or at periodic revaluation.

Professional Note

Scope and basis of the assessment

A reinstatement cost assessment is prepared for insurance purposes. It is not a market valuation, a mortgage valuation, a structural survey, a premium calculation or a guarantee of insurer acceptance. The report is based on the agreed scope, the available information, the inspection findings and the stated assumptions, and the insurer or broker remains responsible for the policy terms applied.

We do not provide market valuations, we do not set insurance premiums and we do not act as the insurer. Our role is to provide a clear, evidence-based rebuild cost assessment so the declared value and sum insured can be reviewed on a defensible basis.

Standards & Guidance

Standards and sources we reference

The report is written for insurance decision-making, so we separate the surveying evidence, policy assumptions and valuation boundaries.

RICS professional standard

RICS Reinstatement cost assessment of buildings sets the professional context for RCA inspections, reporting and review cycles.

Buildings insurance basis

ABI buildings insurance guidance distinguishes the rebuild cost used for insurance from the market value of a property.

BCIS rebuild cost benchmark

BCIS rebuild calculator guidance is a useful public reference point for domestic rebuild-cost awareness; professional RCA work still needs building-specific judgement.

Insurance use

The RCA supports a declared value and sum insured discussion. The insurer or broker decides the policy terms, inflation provision and premium.

London Inspection & Reporting Workflow

A representative RCA for a London residential block

The following London inspection and reporting workflow breakdown shows how our RICS surveyors scope, inspect and report on real properties across London; see our published London surveying case studies for completed project records.

  • Typical client: A managing agent acting for a freeholder
  • Typical building: A converted residential block in North London
  • Typical issue: Insurance renewal approaching and a previous declared value now outdated
  • Typical instruction: A reinstatement cost assessment for block insurance purposes
  • What the client typically receives: A rebuild cost report including demolition, clearance, professional fees and inflation assumptions
  • How it is typically used: A clearer basis for insurance renewal and an under-insurance review
  • Related services: Building Condition Surveys, Section 20 & Major Works
Areas We Cover

Reinstatement Cost across London — 126 areas covered

RICS regulated reinstatement cost across every London area. Select your area for local expertise and

Fees

What affects the fee?

A reinstatement cost assessment is quoted to the property, so the fee reflects the building rather than a fixed rate. The main factors are:

  • The size, type and construction of the building
  • Period, listed or non-standard features that affect rebuild cost
  • Whether the assessment covers a house, a block or a portfolio
  • The drawings and floor areas already available
  • External works, outbuildings and site constraints to be included
  • Whether a full inspection or a desktop review is appropriate
  • The timescale, for example an insurance renewal deadline

We confirm a written scope and fee before you instruct, so the cost is clear before any commitment.

Have an insurance renewal, declared value query or under-insurance concern? Start with the enquiry. We will then confirm the appropriate way to send supporting documents and advise on the right RCA scope.

Ask us to review your documents
FAQs

Common questions about reinstatement cost assessments

What is a reinstatement cost assessment?

A reinstatement cost assessment (RCA) is a professional estimate of the cost of rebuilding a property after a total loss, for insurance purposes. It covers demolition and site clearance, rebuilding to current building regulations, professional fees, statutory charges and VAT where applicable, plus an allowance for inflation. It is the figure your buildings insurance sum insured should be based on, and it is different from market value or any mortgage figure.

Is reinstatement cost the same as market value?

No. Market value is what a property might sell for, driven by location and the property market. Reinstatement cost is the estimated cost of physically rebuilding the property after total loss, including demolition, clearance, professional fees, statutory costs and VAT where applicable. The two can be very different, particularly in London, and insuring on a market-value basis is the most common cause of under-insurance.

Who needs an RCA?

Freeholders, resident management companies, right to manage companies, managing agents, housing associations, commercial owners and portfolio owners all need RCAs to set or check buildings insurance sums insured. They are typically instructed at insurance renewal, after the declared value has not been reviewed for some years, or after the building has been extended, refurbished or altered.

What is a Day One reinstatement value?

The Day One reinstatement value is the estimated rebuild cost at the start of the policy period. Many insurers then apply an inflation provision on top of the Day One figure to allow for cost increases and the time taken to rebuild after a claim. We set out the Day One figure clearly and explain the basis for any inflation allowance so the declared value can be set correctly.

What is a declared value?

The declared value is the policyholder's assessment of the full reinstatement cost at the start of the policy period, on which the sum insured is based. It is not always the same as the sum insured, which may include an inflation uplift. An RCA gives an evidenced basis for the declared value so it can be defended at renewal and in the event of a claim.

Can under-insurance affect a claim?

Yes. If the sum insured is materially below the true reinstatement cost, insurers can apply an "average" clause and reduce the claim payment proportionately, even for a partial loss. For a block this can leave leaseholders significantly exposed. A current, evidenced RCA is the most effective protection against under-insurance and average.

How often should the figure be reviewed?

As a general guide the reinstatement figure should be reviewed at least every few years, and reassessed sooner after extension, refurbishment, alteration or significant construction cost movement. The exact cycle depends on the building and policy requirements. We agree a review cycle so the declared value does not silently drift out of date between full assessments.

Do managing agents need regular RCA updates?

Yes. For managed blocks, keeping the RCA current is part of prudent block insurance management and helps demonstrate to leaseholders that the sum insured is properly evidenced. We can work to a portfolio review cycle so renewals are supported with up-to-date figures rather than rolled-forward estimates.

Do you inspect residential blocks?

Yes. Residential blocks are a core focus. We inspect the building and review measurements, construction, communal areas, plant rooms, lifts, roofs, basements and external works, and produce a whole-building reinstatement figure suited to block insurance renewal for freeholders, RMCs, RTM companies and managing agents.

Can you assess blocks and mixed-use buildings?

Yes. Reinstatement cost assessments can be prepared for houses, flats, mansion blocks, converted houses, residential blocks and mixed-use buildings, subject to the agreed scope. For mixed-use we assess the whole building, including the residential and commercial elements and shared structures.

Does the report include VAT and professional fees?

Yes, where relevant. The assessment includes professional fees, statutory charges, demolition and site clearance, and VAT on the elements where it applies, alongside the rebuild cost. The assumptions and the VAT position are clearly stated in the report so the figure can be understood and relied on at renewal.

Is this the same as a mortgage valuation?

No. A mortgage valuation assesses value for lending and a market valuation assesses sale value. A reinstatement cost assessment estimates the cost of rebuilding for insurance. They are different exercises for different purposes, and an RCA should not be used as, or in place of, a market or mortgage valuation.

Can you review multiple properties in a portfolio?

Yes. We can assess multiple properties across a portfolio for managing agents, housing associations and institutional owners, and align them to a review cycle so insurance renewals across the portfolio are supported with current, consistent figures.

Will the report explain any unusual cost drivers?

Yes. Where the building has abnormal features, listed or heritage constraints, difficult access or unusual construction that may affect rebuild cost, those factors are identified and explained in the report, along with the assumptions and exclusions, so the figure is transparent rather than a single unexplained number.

How is the sum insured kept up to date between full assessments?

Between full professional assessments the reinstatement figure is usually kept current through index-linking, where the insurer adjusts the sum insured in line with a construction cost index at each renewal. Index-linking helps offset general building cost inflation, but it does not capture changes to the building itself, such as an extension, refurbishment or altered specification. RICS good practice is therefore to obtain a fresh professional assessment periodically, with a figure commonly cited around every three years, and to rely on index-linking only in the years between full reviews.

Is a site inspection needed, or can the assessment be done as a desktop review?

It depends on the building and the purpose of the figure. For most properties, particularly blocks, period buildings and anything altered or non-standard, a site inspection gives the most reliable basis, because measurements, construction and access constraints can be checked directly, and a full assessment to RICS practice normally involves a site visit. A desktop review, drawing on existing drawings, floor areas and reliable recent records, can sometimes suit an interim update between full assessments. We advise which basis suits your building, and set out clearly in the report what was inspected and what was assumed.

Request a Consultation

If you need a clearer rebuild-cost figure for insurance review or renewal, we can help.

Request a Consultation
Reviewed by Savas Bulduk BSc (Hons) MRICS, Director & Chartered Building Surveyor at Hampstead Chartered Surveyors & Building Consultancy. Last reviewed: October 2026. Sources: RICS professional standard, ABI buildings insurance guidance and BCIS rebuild-cost guidance.
London Areas

Chartered surveyors across priority London areas

We cover all London boroughs. These priority area pages connect this service with local building stock, conservation context and related service-area pages.

Areas We Cover

Reinstatement cost assessments across London

Select an area.

Portfolio Programmes

Manage reinstatement cost reviews across a property portfolio

A recurring programme applies a consistent reporting basis, review calendar and exception process across multiple buildings without duplicating the parent RCA service.

Programme controls

  • Asset register and information review
  • Prioritised inspection and review schedule
  • Consistent assumptions and report framework
  • Renewal calendar and reassessment triggers
  • Consolidated management and exception reporting

A distinct recurring instruction

The portfolio service is designed for managing agents, freeholders, housing providers, estates and owners who need repeatable RCA governance across several assets. It does not set policy terms, premiums or insurer acceptance.

Manage RCAs Across a Portfolio

Key contact

Savas Bulduk BSc (Hons) MRICS, Director & Chartered Building Surveyor leads our commercial condition, defect, insurance and compliance instructions.

Verify RICS membership · How we are regulated · Discuss your instruction

Direct Enquiry

Enquire about Reinstatement Cost Assessments

Tell us briefly about the building and what you need. Your enquiry goes directly to our chartered surveying team.

We respond to enquiries within one working day.

Prefer to talk it through first? Call 020 7101 4590 or email enquiries@hampsteadcharteredsurveyors.co.uk.

Typical fees: Reinstatement Cost Assessments instructions in London typically start from £450 plus VAT; we confirm a fixed fee after scoping the building and the brief.

Request a sample report

Ask us to email a sample Reinstatement Cost Assessments report so you can judge the depth and format before instructing.

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Scope & Fee Guide

Reinstatement Cost Assessment London: Deliverables & Transparent Fee Matrix

Every reinstatement cost assessment london instruction is confirmed by a fixed written fee proposal once the property address, tenure and scope are reviewed. Starting fees begin from £650 plus VAT; all fee guides below are exclusive of VAT (plus VAT).

Scope / Property BandDeliverables & Technical ScopeTypical TurnaroundTransparent Fee Guide (Excl. VAT)
Band A — Standard / Single-Property Reinstatement Cost Assessment LondonPre-instruction document review, targeted site inspection or desktop appraisal, and structured RICS-aligned report.3–5 working days from inspectionFrom £650 plus VAT (single period house, converted building or boutique commercial unit RICS RCA)
Band B — Comprehensive Reinstatement Cost Assessment London InstructionFull site inspection, photographic defect/evidence schedule, regulatory analysis and prioritised cost/action plan.5–8 working days from site accessFrom £1,250 plus VAT (purpose-built residential block, mansion block or listed property rebuild assessment)
Band C — Complex, Heritage or Multi-Unit Reinstatement Cost Assessment LondonListed-building, higher-risk, multi-unit or portfolio instruction with senior director review and adviser coordination.7–12 working days (or agreed milestone)From £2,450 plus VAT (large mixed-use estate or multi-block Day One insurance reinstatement valuation)