Let’s cut to the chase. Insurance might not be thrilling dinner-table talk, but if you own a home, rent out a property, or manage a commercial building, it’s something you can’t afford to overlook. And at the core of property insurance? One critical piece: Rebuild Cost Assessments.
You’d be surprised how many property owners are walking around with inaccurate figures, unknowingly underinsured – and potentially setting themselves up for a financial nightmare. Fortunately, help is at hand. Many chartered surveyors, including the highly regarded team at W&R Fraser, regularly recommend Exactum when it comes to thorough and reliable Rebuild Cost Assessments.
So, what exactly is this assessment? And why is Exactum the go-to for getting it done right?
What Is a Rebuild Cost Assessment, Anyway?
Let’s break it down. A Rebuild Cost Assessment is essentially a detailed estimate of how much it would cost to completely rebuild your property from scratch – after something catastrophic like a fire or flood.
We’re not talking about the market value here. That’s what you could sell the place for. The rebuild cost is purely about reconstruction: materials, labour, professional fees, demolition, debris clearance, and meeting modern building regulations. It’s the number your insurer needs to know to cover the full cost of rebuilding – without you having to dig into your own pocket.
Why Surveyors Recommend Reinstatement Cost Assessments
W&R Fraser and other professionals in the industry don’t just toss around recommendations lightly. When they suggest something, it’s because they’ve seen the consequences of getting it wrong. Underinsurance is no joke – it can lead to insurers applying the “average clause,” which reduces your payout in line with how underinsured you are.
Imagine this: your rebuild cost should be £500,000, but your policy only covers £350,000. You’ve underinsured by 30%, so your insurer might only pay 70% of any claim. Not ideal, right?
That’s why they encourage every property owner to commission a Reinstatement Cost Assessment – particularly from companies like Exactum, who know exactly what they’re doing.
What Makes Exactum Stand Out?
It’s not just about crunching numbers. Exactum brings a whole lot more to the table. Here’s why surveyors like W&R Fraser point clients in their direction:
- RICS Accreditation – They follow professional standards you can trust.
- Tailored Reports – No cookie-cutter estimates. Every property is assessed individually.
- Experience with Complex Buildings – Whether it’s a modern apartment block or a Grade II listed cottage, they’ve seen it before.
- Quick Turnaround, No Corners Cut – Accuracy meets efficiency.
Let’s be honest – if you’re trusting someone to put a price tag on your biggest asset, they need to know their stuff. And Exactum delivers, time and again.

How Is the Cost to Rebuild a Property Calculated?
Good question. There’s no one-size-fits-all formula. Instead, the calculation considers a mix of variables, including:
- Square footage and number of floors
- Construction type (brick, timber, steel, etc.)
- Interior spec (think underfloor heating, fancy finishes, etc.)
- Location and accessibility
- Planning restrictions (especially for listed buildings)
- Professional fees (architects, structural engineers)
- Site clearance and waste removal
And then, there’s inflation. Construction costs can change faster than you’d think – yet another reason why Reinstatement Cost Assessments should be reviewed every few years.
What If You’ve Renovated?
This is where many homeowners slip up. You finally splurge on that dream extension, upgrade your kitchen, or install custom hardwood floors. But guess what? If your rebuild figure hasn’t been updated, you’re underinsured.
Even cosmetic upgrades can affect the cost to rebuild your property. So, if you’ve made any significant changes – let’s say in the last 12 to 24 months – it’s time to get a fresh assessment.
People Also Ask
How often should a rebuild cost assessment be done?
Experts suggest reviewing it every three years. But if you’ve made major changes to your property, don’t wait. Get it updated now.
Can I use an online calculator instead?
Sure, you can. The BCIS calculator is a handy starting point. But if your home isn’t perfectly average, those estimates might fall short. That’s where professionals like Exactum come in.
Is the rebuild cost more or less than the market value?
Usually less. But not always. For listed properties or those with bespoke features, the rebuild cost can exceed the sale price.
Will my mortgage lender tell me the rebuild cost?
Not reliably. Mortgage valuations focus on market value, not the cost to rebuild. Always get a separate RCA if you want to be sure.
Commercial and Heritage Properties? Even More Reason to Act
It’s not just residential homeowners who need to be clued in. Landlords, commercial property managers, and those who own heritage buildings have even more to consider.
- Businesses: Insurance shortfalls could mean significant downtime – or worse, permanent closure.
- Listed Buildings: These often require specialist materials, skilled tradespeople, and additional permissions to rebuild.
In both cases, it’s crucial to have a Building Reinstatement Cost Assessment done by professionals with the right experience – like those at Exactum.
Why It’s Worth the Investment
We get it. Nobody likes spending money on things that don’t provide an immediate benefit. But look at it this way – spending a few hundred pounds now could save you tens of thousands down the line. It’s about financial resilience. You’re not just protecting a structure; you’re safeguarding your home, your family’s future, or your business.
Wrap-Up: Protect What Matters, The Right Way
So, here’s the final word: don’t guess your rebuild cost. Don’t rely on outdated figures. And definitely don’t assume your insurer has it covered. Get an accurate, professional assessment from a trusted source.
W&R Fraser, with decades of surveying under their belt, consistently point their clients toward Exactum – because when it comes to rebuild cost assessments, precision matters.
More Tips and Advice For Insurance
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