What is a Building Reinstatement Cost Assessment?
A Building Reinstatement Cost Assessment (BRCA) — formerly known as a fire insurance valuation — determines how much it would cost to completely rebuild your property in the event of total loss. This figure is used to set the correct level of buildings insurance cover.
It’s important to understand what this isn’t: it’s not a market valuation. The market value of a property (what you could sell it for) and its reinstatement cost (what it would cost to rebuild) are completely different figures. A building might be worth £4 million on the market but cost £2 million to rebuild, or vice versa. If you’re not sure your cover reflects the true rebuild cost, ask us to check — under-insurance can leave a claim short.
Why the figure matters
Underinsurance
If your declared reinstatement value is too low, you’re underinsured. In the event of a claim, insurers can apply the “average clause” — reducing your payout proportionally to reflect the underinsurance.
For example: if you’ve insured for £1 million but the true reinstatement cost is £2 million, you’re 50% underinsured. If you then suffer £500,000 of damage, the insurer can reduce your payout to £250,000.
This applies to partial claims too, not just total loss. Underinsurance can be devastating.
Overinsurance
If your declared value is too high, you’re paying more premium than necessary. Insurance companies won’t pay out more than the actual reinstatement cost, so there’s no benefit to over-declaring — just wasted money.
Who needs this?
You should have a current Building Reinstatement Cost Assessment if you’re:
- A property owner or landlord
- An investor or fund with commercial property holdings
- A freeholder or management company
- A tenant who is responsible for insuring the building under their lease
- Anyone with buildings insurance that needs accurate declared values
- A lender requiring evidence of adequate insurance cover
- Buying a property and need to set up insurance from day one
When you need it
On acquisition — Set your insurance at the correct level from the start
Every 3 years — RICS recommends reassessment at least every three years, or sooner if circumstances change. Building costs fluctuate, particularly in recent years with significant national and global events.
After significant alterations — Extensions, refurbishments, or changes to the building affect reinstatement cost
If you suspect your cover is wrong — If you’ve never had a professional assessment, or if you’re using an old figure that’s been index-linked without verification
When your insurer or lender requests it — Funders and insurers increasingly require professional assessments rather than accepting declared values
What’s included in the reinstatement cost?
The reinstatement cost isn’t just “what would it cost to build this building?” It’s more comprehensive:
- Demolition and site clearance — Removing the damaged structure
- Debris removal — Clearing the site
- Rebuilding — The cost of constructing a new building to match the original
- Professional fees — Architects, engineers, surveyors, project managers
- Statutory fees — Planning applications, building control, party wall matters
- VAT — Where applicable (complex rules apply depending on property type and use)
The figure should reflect current building costs and local market conditions, not historic costs or national averages.
The process
- 01
Information gathering
We obtain available plans, measurements, and construction details. Even if drawings are available, we still measure the building.
- 02
Site inspection
We visit the property to verify measurements, confirm construction type and specification, and note any features that affect rebuild costs (heritage requirements, complex structures, specialist finishes).
- 03
Assessment
We calculate the reinstatement cost using:
- Current building cost data
- Appropriate regional adjustments
- Allowances for professional fees, demolition, and statutory costs
- VAT where applicable
- 04
Report
We provide a formal assessment report including:
- The declared reinstatement value
- Breakdown of how we reached the figure if requested
- Notes on assumptions and exclusions
- Validity and recommendations for review
What you get
- RICS-compliant reinstatement cost assessment — Prepared by a chartered surveyor
- Declared value for insurance purposes — The figure you provide to your insurer
- Supporting methodology — Transparent breakdown of how we calculated the figure if requested
- Formal report — Documentation for your records and to satisfy lenders if required
Common situations we see
Significant underinsurance
Property owners who set their declared value years ago and have simply index-linked it ever since. Building cost inflation doesn’t always track the indices insurers use, and the original figure may have been wrong anyway.
Heritage and listed buildings
Historic buildings often cost far more to reinstate than their modern equivalents due to specialist materials, conservation requirements, and listed building consent processes. Standard cost guides underestimate these significantly.
Complex or unusual buildings
Industrial buildings with specialist installations, buildings with complex structures, properties with extensive external works — all can be underestimated if assessed using generic cost data.
VAT confusion
The VAT position on reinstatement is complex and depends on property type, use, and the owner’s VAT status. Getting this wrong can mean under or over-declaring by 20%.
What happens if you don’t have an assessment?
- Underinsurance risk — A claim could be reduced, leaving you with a significant shortfall
- Premium overpayment — You may be paying for cover you can’t claim
- Lender issues — Funders may require evidence of adequate insurance
- Disputed claims — Without professional evidence, insurers may challenge your declared value when you claim
The cost of an assessment is trivial compared to the financial exposure of getting it wrong.
Related services
When acquiring property:
- Pre-Acquisition Surveys — Assess building condition alongside insurance value
For ongoing asset management:
- Planned Maintenance Schedules — Proactive maintenance protects your asset
FAQs
Is the reinstatement cost the same as the market value?
No. Market value is what you could sell the property for. Reinstatement cost is what it would cost to rebuild. They’re often very different — a building might sell for less than its rebuild cost, or vice versa.
How often should I update my assessment?
RICS recommends at least every three years, or sooner if you make significant alterations. Building costs change; an old assessment may no longer be accurate.
Does the assessment include the land?
No, not exactly. Land doesn’t need to be reinstated — it’s still there after a fire. The assessment covers the building and associated structures only, but we do include an allowance for external elements such as hardstandings, boundaries and soft landscaping
What about tenant fit-outs?
Typically, tenant fit-outs are the tenant’s responsibility to insure. The building reinstatement cost covers the landlord’s building, not tenant improvements. However, this depends on lease terms — we can advise.
Do you assess residential property as well as commercial?
Yes. The same principles apply to residential property, including blocks of flats and mixed-use buildings.