# B-T10-C-01: How can I work out a realistic contents sum insured for everything in my household?

Collected 11 October 2026

[Home and contents insurance study](https://nzbrands.ai/research/insurance/home-contents-insurance)

## ChatGPT

Answer ID: 516295fb-3dea-400a-9de4-2e2c31215321

Working out a realistic contents sum insured is about answering one question: how much would it cost to replace everything you own if your household contents were destroyed in a fire tomorrow?

In New Zealand, it's easy to underestimate this figure because we tend to think about what we paid for our belongings, rather than what it would cost to replace them with new items today.

The most reliable approach is to make a room-by-room inventory, estimate today's replacement prices, and add a sensible allowance for the things people often forget.

## 1. Work through your home room by room

Living room

- Sofa, armchairs and occasional furniture
- TV, speakers, gaming consoles and electronics
- Rugs, lamps, curtains and cushions
- Books, ornaments, artwork and decorations

Bedrooms and wardrobes

- Beds, mattresses, drawers and bedside tables
- Everyday clothing, coats, shoes and bags
- Bedding, towels and linen
- Jewellery, watches and accessories

Kitchen and laundry

- Fridge, freezer, microwave and other appliances
- Pots, pans, crockery, cutlery and glassware
- Kettle, toaster, coffee machine and air fryer
- Washing machine, dryer, vacuum cleaner and cleaning equipment

Office, hobbies and other spaces

- Computers, monitors, tablets and phones
- Desks, office chairs and printers
- Sports equipment, musical instruments and tools
- Children's toys, games, books and hobby equipment
- Garage, shed, outdoor furniture, bicycles and BBQ

A useful trick: imagine turning your house upside down. Everything that would fall out needs to be considered, including things in cupboards, drawers, the garage, the garden shed and the linen cupboard.

## 2. Use a New Zealand contents calculator

You don't have to price every teaspoon individually. Start with a calculator, then adjust the estimate to match what you actually own.

Here are three useful options:

NZI contents calculator

Estimates replacement values for your household and helps identify valuable items that may need separate cover.

Best for a structured starting estimate.

[Use the NZI calculator](https://www.nzi.co.nz/personal-cover/contents-insurance/contents-calculator)

AMP contents calculator

Lets you adjust the estimated quantities and values of furniture, appliances, lawn equipment and other belongings.

Best for refining the estimate item by item.

[Use the AMP calculator](https://www.amp.co.nz/my-insurance/contents-insurance/contents-insurance-calculator)

Vero contents calculator

Provides an estimate based on your home, its rooms, household size and the quality and quantity of your possessions.

Best for cross-checking your first estimate.

[Use the Vero calculator](https://www.vero.co.nz/policies/personal/contents/home-contents-calculator.html)

These calculators provide estimates, not guarantees. Use the same household details in two calculators if you want to compare the results. [Contents Calculator](https://www.nzi.co.nz/personal-cover/contents-insurance/contents-calculator)[Estimate Your Contents Value with Contents Insurance Calculator](https://www.amp.co.nz/my-insurance/contents-insurance/contents-insurance-calculator)[Home Contents Calculator](https://www.vero.co.nz/policies/personal/contents/home-contents-calculator.html)

## 3. Add the items people commonly underestimate

The small things can make a surprisingly large difference to the total.

- Clothing and shoes: Count everything across all household members, including winter coats, formalwear and sports shoes.
- Kitchen contents: Replacing all crockery, utensils, cookware, food containers and small appliances adds up quickly.
- Bedding and towels: Include duvets, pillows, sheets, blankets and spare sets.
- Technology: Include every phone, tablet, computer, monitor, gaming console, charger and accessory.
- Garage and outdoor items: Tools, bicycles, lawnmowers, garden equipment, outdoor furniture and barbecues.
- Stored and occasional-use items: Suitcases, Christmas decorations, camping gear, spare appliances and items in the attic or shed.

For expensive jewellery, artwork, watches, cameras, musical instruments or collectibles, check the policy's individual item limits. Some may need to be specified separately. [House & Contents Insurance: Sum Insured Explained](https://www.icnz.org.nz/individuals/house-contents/)[Understanding your contents sum insured](https://www.bnz.co.nz/support/insurance/general-insurance/understanding-your-contents-sum-insured)

## 4. Build your own estimate

You can use this simple worksheet to organise your figures. Enter the combined new replacement cost for each category, rather than what you originally paid.

Amounts in NZ dollars (NZD)

Estimated contents replacement total

# $0

 Copy breakdownThis is a manual worksheet, not an insurance quote. Check whether your policy includes separately specified items in or outside the general contents sum insured, and whether its sum insured is defined inclusive or exclusive of GST.

## 5. Check your policy before settling on a figure

Three checks are particularly important in New Zealand:

1. Replacement cost versus present value. Some policies replace eligible items with new equivalents; others pay the present value of certain older items or categories. Your sum insured should reflect the cover you actually have. [Contents Calculator](https://www.nzi.co.nz/personal-cover/contents-insurance/contents-calculator)[Contents insurance calculator - Find your sum insured](https://www.asb.co.nz/home-and-contents-insurance/contents-insurance-calculator.html)
2. Specified valuables. Check whether expensive individual items need to be listed separately, and whether their values count towards your general contents limit. Don't count them twice.
3. GST and policy wording. Don't automatically add or subtract GST. Different insurers describe their sums insured differently, so use the definition in your own policy documents.

Once you've calculated your total, compare it with the calculator estimates, correct any obvious omissions, and review the figure at renewal or after a major purchase. Consumer NZ also provides a useful [house and contents insurance guide](https://www.consumer.org.nz/money/insurance/house-and-contents-insurance/guide). [House & Contents Insurance: Sum Insured Explained](https://www.icnz.org.nz/individuals/house-contents/)[How to get the best house and contents insurance](https://www.consumer.org.nz/money/insurance/house-and-contents-insurance/guide)

## Let's narrow it down to your household

If you tell me a little about your home, I can help you arrive at a realistic ballpark figure without having to list every single possession.

## Gemini

Answer ID: bc6c20ba-51e8-40b7-85ff-cd4e2c43ec28

Working out a realistic contents sum insured requires looking past the big-ticket items and accounting for everything it would cost to completely restock your home from scratch. Under most New Zealand insurance policies, you are responsible for nominating this figure, and underestimating it can leave you out of pocket if you face a major claim. 

A practical, step-by-step approach to calculating your contents sum insured accurately involves the following framework:

---

### 1. Apply the "Turn the House Upside Down" Rule
A helpful golden rule of contents insurance is: **if you turned your house upside down, anything that falls out is contents.** 
* **What is included:** Furniture, appliances, clothing, electronics, bedding, kitchenware, books, tools, sports gear, and even pantry/freezer items.
* **What is excluded:** Anything structurally fixed to the building (like kitchen joinery, built-in bathroom vanities, or wall-to-wall carpets) belongs to your house insurance, not contents.

### 2. Walk Room by Room (The Detailed Method)
The most reliable way to avoid being underinsured is to go room by room and tally up replacement values. People frequently underestimate their contents because they forget everyday items. Consider these categories:
* **Wardrobes and Drawers:** Do a quick inventory of your clothes, shoes, winter coats, and accessories. Accumulating a wardrobe over years adds up surprisingly fast (often $10,000 to $20,000+ for a family).
* **Kitchen and Dining:** Crockery, cutlery, pots, pans, small appliances (blenders, air fryers, coffee machines), and pantry stock.
* **Living and Entertainment:** TVs, sound systems, gaming consoles, couches, rugs, coffee tables, and books.
* **Garage, Shed, and Outdoors:** Lawnmowers, power tools, bikes, camping gear, and sports equipment.

### 3. Base It on "New for Old" Replacement Value
Most standard modern policies in New Zealand operate on a **"New for Old" (replacement value)** basis. This means your calculation should reflect what it would cost to buy brand-new equivalents today, not what your items are currently worth second-hand. Factor in current retail prices and inflation.

### 4. Check Individual Item Limits and High-Value Items
Insurers generally place standard maximum limits on single items or categories (e.g., jewellery, fine art, watches, or high-end cameras). 
* If you own an engagement ring, specialized art, or a high-end bike worth more than the standard policy limit (often around $2,000 to $3,000, depending on the insurer), you must list them as **"specified items"**.
* Keep receipts, valuations, or photos ready for these items so they are fully covered.

### 5. Utilize Online NZ Calculators for Benchmarking
To cross-check your manual list, you can use independent online calculators provided by major New Zealand insurers or comparison platforms (such as AMI, State, or Quashed). They use baseline data based on your house size, number of occupants, and lifestyle tier to suggest a realistic starting sum. 

---

### Action Plan to Finalize Your Cover:
1. **Draft a rough inventory list** room by room over the weekend, noting estimated retail replacement costs for major categories.
2. **Identify high-value items** (e.g., jewellery, premium electronics) that exceed standard single-item policy caps and set them aside to be specified.
3. **Run your details through an online NZ contents calculator** (like those on AMI, State, or Quashed) to benchmark your total against typical households.
4. **Compare policies across providers** (using tools like Quashed Market Scan or direct quotes) to see how adjusting your sum insured impacts your annual premium.

Would you like help breaking down what specific room categories or items typically cost to replace for a household of your size?

## AI Overviews

Answer ID: 2f078bb3-c177-41e9-ac46-658f62bfdbb1

To work out a realistic contents sum insured in New Zealand, you must calculate the **total cost to replace everything new today** , rather than what the items are worth second-hand. Most Kiwis significantly underestimate this amount, with a typical mid-range 3-bedroom Kiwi home holding between **$50,000 to $100,000** worth of contents. Underestimating your contents leaves you at risk of underinsurance if you experience a major event like a fire or flood.

1\. Use an Interactive Web Calculator

The fastest way to establish a baseline is to use an industry-standard database tool.

 * Most major NZ insurers provide access to the independent Sum Insured CIRCA Net home contents calculator.

 * This tool uses "dynamic elemental modelling" to cross-reference your specific street address with household data to build a tailored baseline of your contents. You can then adjust the quantities manually.

* * *

2\. Conduct a Room-by-Room Inventory

To move from a generic estimate to a bulletproof claim profile, walk through your home and log items room by room. Do not guess values; use current online retail prices to gauge what it would cost to buy them brand new.

 * **Living Areas:** Furniture, rugs, TVs, sound systems, streaming devices, artwork, and books.

 * **Kitchen:** Fridge, oven, microwave, coffee machines, small appliances, crockery, cutlery, and pantry staples.

 * **Bedrooms:** Mattresses, bed frames, linen, pillows, and wardrobes (including all clothing, shoes, and accessories).

 * **Bathroom & Laundry:** Washing machine, dryer, towels, hair dryers, and toiletries.

 * **Garage & Shed:** Tools, lawnmowers, sports gear, bicycles, and camping equipment.

* * *

3\. Check for Hidden Costs & "Special Limits"

When totaling your sum insured, account for these easily forgotten factors:

 * **The "Bulk" Items:** Do not count curtains, carpets, and light fittings as contents unless you are a renter. For homeowners, these are typically covered under your _house_ building policy, not your contents policy.

 * **High-Value Item Caps:** Most standard NZ policies place an automatic limit (usually between **$1,500 and $3,000**) on individual items like jewelry, watches, cameras, or specialized sports gear. If you own an engagement ring worth $6,000, you must explicitly list it as a _specified item_ on your policy so its total value is covered.

 * **The 10% Buffer:** Once you have a final room-by-room tally, add a **10% to 20% cushion** to your final sum insured. This accounts for minor, untracked miscellaneous goods (like clothing basics, makeup, and linens) that accumulate over time.

* * *

Summary Checklist for NZ Policyholders

Task| Action| Why it matters
---|---|---
**Run Address Tool**| Use the CIRCA Home Contents Calculator.| Establishes an automated local baseline.
**Inventory Walkthrough**| Shoot video/photos of open wardrobes and drawers.| Forms vital evidence if you ever need to claim.
**Isolate Valuables**| Total up individual items worth over $1,500.| Ensures you don't hit policy item limits.
**Factor in Inflation**| Review the total sum annually at renewal time.| Prices for new goods change constantly.

* * *

If you'd like to narrow down the target coverage, let me know:

 * Approximately how many **bedrooms** are in your home?

 * Do you own any **high-value individual items** like fine jewelry, e-bikes, or high-end tech?

 * Are you looking at this from a **renter's or a homeowner's** perspective?

I can guide you on the typical policy inclusions and limits for your exact setup.

## Google AI Mode

Answer ID: 73c5ead5-7bab-42f7-ba2c-b085a37fd52a

Working out a realistic contents sum insured means calculating what it would cost to replace everything in your household brand new today—not what they are worth second-hand. Under-insuring is a common trap, so breaking the task down systematically helps ensure you aren't left short if the worst happens.

Here is a practical, step-by-step approach to working out your total:

 1. **Use an online room-by-room calculator**
Most major New Zealand insurers (such as AA Insurance Contents Calculator or Vero Contents Calculator) link to independent tools provided by _Sum Insured Pty Ltd_. These tools walk you through your home room-by-room, asking about the quantity and quality of your belongings to generate a realistic baseline replacement estimate.
 2. **Conduct a room-by-room inventory**
Walk through your home and list major items in each space. Don't rely on memory; open closets, drawers, and the garage. Group them by category:
 * **Living & Dining:** Televisions, sound systems, couches, tables, rugs, and curtains/blinds (if you own them rather than the landlord).
 * **Kitchen:** Fridges, microwaves, glassware, cutlery, appliances, and cookware.
 * **Bedrooms:** Beds, mattresses, linen, chest of drawers, and your entire wardrobe (shoes, jackets, everyday wear—it adds up fast).
 * **Garage, Shed & Outdoors:** Tools, lawnmowers, bikes, sports gear, and camping equipment.
 3. **Account for high-value and specialty items**
Check your policy limits for single items. Standard policies often cap payouts for high-value items like jewellery, artwork, watches, or high-end cameras unless they are specifically itemised on your policy. Make sure to value these separately and note whether they need special endorsement.
 4. **Think about the "shake out" test**
Imagine turning your house upside down and shaking it—anything that falls out or isn't screwed to the structure is considered contents. This includes items people often forget, such as:
 * Bedding, duvets, and pillows.
 * Books, board games, and toys.
 * Pantry food and alcohol stocks.
 * Cosmetics, toiletries, and cleaning supplies.
 5. **Base figures on replacement cost (New for Old)**
Always estimate what it would cost to buy these items brand new in today's market, factoring in inflation and rising retail costs. Avoid using thrift or garage-sale mentalities; if your couch gets destroyed, your insurance needs to buy a comparable new one.

If you'd like, let me know:

 * Are you insuring a **full family home, a rental, or just a flat/bedroom**?
 * Do you have any **high-value specialty items** (like fine art or jewellery) that you're unsure how to price?

I can give you more targeted advice on how to factor those in.
