
1. Reinstatement value and market value: two logics, two figures
Market value answers the question “what price would this property fetch today?”. It embeds land, location, and the balance of supply and demand. Insurance reinstatement valueanswers a radically different question: “what would it cost to rebuild this structure if it were destroyed?”. Three consequences follow immediately.
- Land leaves the calculation. It does not burn, it does not collapse, and it remains the owner's after the loss. Insuring on market value with land included is almost always overinsurance in locations where the site accounts for much of the price.
- The construction enters in full. Structure, finishes and building services attached to the fabric, but also the peripheral costs of rebuilding: architects' and engineers' fees, technical control, demolition and clearance of debris, and upgrading to the regulations in force on the day of reconstruction.
- The two figures move differently. Market value tracks the property market; reinstatement value tracks construction costs — materials, labour, regulatory standards. A sum insured fixed once and never revisited drifts away from both.
In a central district where land carries most of the price, the reinstatement value can sit well below market value. Conversely, for a technically demanding building on ordinary land — a factory, a clinic, a heritage property — the rebuilding cost can exceed the market price. That is precisely why the sum insured cannot be guessed: it has to be calculated. Our note on market value, rental value and reinstatement value compares the three bases side by side.
2. The average clause: the mechanism that punishes underinsurance
The average clause — the proportional reduction of the claim — is a standard feature of damage policies: where, at the date of loss, the declared sum insured is below the true value of the insured property, the insurer reduces the settlement in the same proportion. The point many insureds discover too late is that the clause applies to partial losses as well. A fire that destroys only part of a building is settled pro rata to the ratio between the declared sum and the true value; the shortfall stays with the owner.
Underinsurance is rarely deliberate. It settles in through entirely ordinary routes: a sum taken from a depreciated book value, a historic figure never refreshed while construction costs rose, an extension or refurbishment never declared, a confusion between purchase price and rebuilding cost. We have devoted a dedicated article to the average clause trap.
Overinsurance is the silent mirror image: an inflated sum — typically market value with land included — does not increase the settlement, which remains capped at the actual loss; it only increases the premium, year after year. In both directions, the gap between the declared sum and the correct figure costs money.
3. What a rebuilding cost is made of
A credible reinstatement value is built item by item, consistently with the definitions used in the policy:
- Structure and envelope — foundations to the extent the policy includes them, load-bearing structure, façades, roof structure and covering.
- Finishes and building services — partitions, floor and wall finishes, joinery, plumbing, electrical installations, and the plant attached to the building (lifts, central air conditioning, fire safety systems).
- Professional fees — architect, engineering consultants, technical control body, project coordination: rebuilding requires a full professional team, whose cost sits on top of the works.
- Demolition and debris removal — before rebuilding, what remains must be taken down and cleared. This item is routinely missing from declared sums.
- Upgrading to current standards — the building will be rebuilt to today's planning, safety, accessibility and seismic requirements, not to those of its year of construction. The difference has a cost.
The policy then determines the basis of settlement: reinstatement as new or indemnity with depreciation deducted, according to the cover written. The assessment provides both readings — cost as new, and a reasoned depreciation allowance component by component — so that the declared sum matches the contractual basis exactly.
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💬 Chat with a RICS-certified valuer on WhatsApp4. The RICS methodology: the cost approach
The RICS Red Book recognises insurance reinstatement as a basis of assessment distinct from market value, and the corresponding technique is the cost approach (VPS 3): estimate the cost of replacing or rebuilding the asset, then adjust it to the contractual basis. In practice the instruction comprises:
- Inspection and measurement — gross built areas, method of construction, specification level, plant attached to the fabric, outbuildings and ancillary structures.
- Characterising the fabric — every method of construction and every specification level has its own cost structure. A high-rise, a long-span structure or a traditionally built property is not rebuilt like an ordinary block.
- Costing the rebuild — by reference to construction costs observed on comparable works, broken down by component, with professional fees, clearance and regulatory upgrading included.
- Depreciation analysis — component by component, because structure does not age at the rate of building services, so that the indemnity reading is available where the policy requires it.
- Consistency with the policy — reading the contractual definitions (buildings, improvements, contents, deductibles) so that the calculated sum slots exactly into the headings of the contract.
This work is a private appraisal. The report is suitable for amicable negotiation and adversarial discussion with the insurer — at inception, to set the sum insured, and after a loss, to discuss the settlement. Where a dispute reaches the courts, the court appoints its own expert. On the post-loss ground, see also what a valuation report contains and what standing it has.
5. When to have the sum insured assessed
- At inception, or when changing insurer — the natural moment to base the sum insured on a documented figure rather than a declaration.
- After significant works — extension, additional storey, major refurbishment, new plant: every undeclared investment widens the underinsurance gap.
- When construction costs have moved materially — materials, labour and regulatory standards make rebuilding more expensive without the declared sum moving at all. A periodic review, at an interval suited to the asset, is unavoidable.
- On an insurance audit or a transaction — acquisition, financing, or restructuring of a portfolio insurance programme.
- After a loss suffered by a comparable third party — often the psychological trigger. Better not to wait for your own.
6. Reinstatement value asset by asset: our dedicated guides
Every asset class has its own rebuilding characteristics — and therefore its own underinsurance risk. We have broken this guide down into dedicated articles:
- Condominiums — insuring the common parts, the role of the syndic and the allocation of shares.
- Villas and private houses — specification level, finishes, outbuildings and swimming pools.
- Residential investment blocks — buildings cover and loss of rent for the landlord.
- Offices and headquarters buildings — fit-out and business interruption.
- Hotels and riads — traditional fabric, craftsmanship and trading continuity.
- Factories — buildings against process plant and machinery.
- Logistics warehouses — long spans, sprinkler protection, buildings against contents.
- Retail units — tenant's fit-out against the landlord's shell.
- Private clinics — technical departments and continuity of care.
- Schools — responsibility and the need to rebuild fast.
- Heritage property — like-for-like reinstatement, traditional materials and craft skills.
Corporate portfolios raise the same questions across several assets at once, with the added complication of depreciation policy: see insuring corporate property assets in Morocco.
7. The deliverable
A reinstatement cost report establishes, on a documented and traceable basis: the description and measurement of the fabric; the cost of rebuilding as new, broken down by component (structure, finishes, plant, professional fees, clearance, regulatory upgrading); the depreciation analysis component by component; and the sum to declare under the contractual basis of the policy. It is dated, signed, prepared to RICS Red Book Global Standards, in English, and stands as the reference document for amicable negotiation and adversarial discussion with the insurer — at inception as much as after a loss.
ReaConsult was founded in 2019 and completes more than 1,000 appraisals a year across 6 Moroccan cities (5,000+ instructions in total, 4.9/5 from 47 Google reviews), with RICS-certified valuers. Instructions are quoted case by case — from MAD 3,500 (excl. tax), quotation within 24 hours. Our note on what a property valuation costs in Morocco explains how fees are built up, and you can send your brief through our contact page.
Set the sum insured on a calculated figure, not a declared one
RICS-certified valuers, reports in English, anywhere in Morocco. From MAD 3,500 (excl. tax), quotation within 24 hours.
Related reading
Note: this article sets out a methodology consistent with RICS Red Book Global Standards (cost approach, VPS 3). The average clause is a standard insurance mechanism whose application depends on the wording of each policy: refer to your contract and to your own advisers. A private appraisal informs underwriting and amicable negotiation; where a dispute reaches the courts, the expert is appointed by the judge. To instruct us, see our appraisal services or the blog.