Total Replacement Home Insurance

Total replacement home insurance covers the market cost to rebuild. It's only offered by AAMI, but a comparable alternative exists in the form of "sum insured" cover.

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Finder Score Full Building Replacement Fire, Storm & Theft Damage Flood Escape of Liquid
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Get $250 worth of smart sensors with a combined policy. T&Cs apply.
Our verdict: This policy is ideal for customers looking for reasonably priced coverage across a range of categories.
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Get 20% off your first year with a combined policy. T&Cs apply.
Our verdict: Finder's Top Pick for Floods plus cover for other common claims such as fire and theft.
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Honey Home Insurance logo
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Get $250 worth of smart sensors when you buy a home insurance policy. T&Cs apply.
Our verdict: Ideal for property owners seeking budget-friendly and fair coverage on their building only.
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QBE Home Insurance logo
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Our verdict: It covers essentials such as fire and theft plus comes with some good perks such as environmental upgrades and up to 10% off your first year.
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Finder Score - Home Insurance

We crunch eligible home insurance products in Australia to see how they stack up. We rank over 50 products on 16 different features, including price. We end up with a single score out of 10 that helps you compare home insurance a bit faster. We assess home and contents, building only and contents only products individually.

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How does total replacement home insurance work?

Total replacement home insurance (sometimes called complete replacement home insurance) works like this: if an insured event like a fire or storm destroys your home, it can cover the cost of rebuilding your property to its previous state.

Most home insurance policies don't do this; with most, you select how much you want to insure your property for (sum insured).

Total replacement cover home insurance policies reduce the gap between the amount your home is insured for and what it actually costs to rebuild the home to its original condition. As a result, they tend to cost more.

The often cheaper alternative is a sum insured safeguard. This is a "safety net" that can provide up to an additional 30% of cover on top of your sum insured if your home is destroyed.

Total replacement cover vs sum insured cover

There are two main types of home insurance available:

  • Total replacement insurance covers the market value of rebuilding your home, so you're unlikely to have any out of pocket expenses.
  • Sum insured cover makes it your responsibility to decide how much your home will cost to rebuild. For example, if you insure your home for $1,000,000 but it ends up costing $1,200,000 to rebuild, you'll be $200,000 out of pocket.
  • Sum insured cover with sum insured safeguard means you're covered for the sum insured plus the safeguard percentage. This is often an additional 10, 20 or 30% of your original sum insured.
Total replacement coverSum insured cover
You don’t set a cover limit.You set a cover limit.
The insurer pays the total cost of rebuilding your home.The insurer pays up to your limit if your home is damaged by an insured event.
It's worth considering if you don’t know how much it will cost to rebuild your home.Often the only way to insure your home.
The best protection against underinsurance.Has a higher risk of underinsurance.

How to calculate the replacement cost of your home

Calculating the replacement cost of your home is tricky. That's because the average person doesn't usually have insights into the costs of building materials and labor required to build a home.

There's also a difference between what your home costs to rebuild and what your home is valued at. If you insure your home for what it's valued at, you'll probably end up paying more than you need to. At the other end of that, if you underestimate the cost to rebuild, you run the risk of underinsurance.

To calculate your building replacement cost, the Insurance Council of Australia recommends:

  • Using a building insurance calculator
  • Accounting for the cost of demolition or asbestos removal
  • Accounting for the cost of things like a shed, if you've got one

When it comes to calculating the cost of your contents, that's a bit easier because you were typically involved in the buying of those items. Remember to include things your house may have already come with, like the oven, dishwasher and ducted aircon. If you've done a renovation and upgraded the carpet or floorboards, be sure to account for those sorts of things too.

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Our expert says

"The goal is to cover every big ticket item so that if you lost it all, you wouldn't find yourself out of pocket. This can add up quite quickly and it means that your premium might also increase as your sum insured does. If you're trying to bring your premium down, you can opt to only include items that really matter to you. For example, if you know your fancy oven costs $7,000 to replace but you'd be happy to replace it with a $1,500 one, you could opt to only cover $1,500 worth. It's really about what you'd be okay with going without and what you deem as necessary to cover."

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Associate publisher
calculator
Online calculators tip
Try to look for an online calculator that takes into account current building and replacement costs to help you reach a more accurate sum insured. This calculator from the Insurance Council of Australia is a great place to start.

FAQs

Sources

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Written by

Publisher of Insurance

Peta Taylor is a publisher at Finder, working across all of insurance. She's been analysing product disclosure statements and publishing articles for over 2 years. Peta is passionate about demystifying complex insurance products to help users make well educated decisions with confidence. Peta is part of Finder's insurance awards team and works alongside editorial and insights experts to bring users the best insurance products every year. See full bio

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Gary Ross Hunter has over 6 years of expertise writing about insurance, including life, health, home, and car insurance. Having reviewed hundreds of product disclosure statements and published over 800 articles, he loves simplifying complex insurance topics for everyday readers. Gary has contributed to major outlets like Yahoo Finance, The Sydney Morning Herald, and news.com.au, and holds a Bachelor of Arts (Honours) in English Literature from the University of Glasgow, along with a Tier 2 General Advice certification, ensuring his work adheres to ASIC’s RG146 standards. See full bio

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Gary Ross has written 589 Finder guides across topics including:
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2 Responses

    Default Gravatar
    JohnJune 25, 2025

    I the event of a total write off what options do I have if I disagree with my insurer’s assessment to rebuild my house?

      Peta Taylor's headshotFinder
      PetaJune 26, 2025Finder

      Hi John,
      You can get a few quotes for yourself and present those to your insurer to help sway their decision. If you’re unable to resolve it from there then you can make a complaint with the Australian Financial Complaints Authority (AFCA): https://www.afca.org.au/annual-review-general-insurance-complaints.
      I hope this helps you!

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