Is the home estimate
you see online
close or way off?
Buying or selling or just curious - learn how to use AI to find out.
Get the AI guide now - NZ$29.95When you buy you get an instant PDF download.
- Research any NZ property address using AI - whether it is currently for sale, recently sold, or a home you already own
- Find what comparable properties sold for and read the signals in any listing
- Understand what the closing paragraph of any listing reveals about the vendor
- Understand where the gap could be between the estimate and what a property is worth
- Know which AI tools can actually do this research and how to test yours before you start
- 9 targeted prompts you keep - ready to copy and paste into any AI with web search
- Bonus: Master Prompt for Claude Pro included - one session, full research on any NZ property address
You've already checked the estimate. You just don't know if you can trust it. That gap - between the number you see and what the property is actually worth - is what this guide is going to give you.
For buyers: Ever turned up to an open home to find it was completely out of your price range?
Consumer NZ tested four NZ homes in March 2026 and found the estimates were sometimes widely off.
* Source: consumer.org.nz - How accurate are house valuation websites
For sellers: $54 million was cut from NZ asking prices in Q1 2026 alone. 1,647 vendors had to reduce publicly. Every buyer watching knew.
* Source: 1news.co.nz - $54m cut from asking prices, April 2026
- Thinking about selling and want to know what comparable properties achieved before you talk to an agent
- Thinking about buying and want to know if the estimate is close before you waste time going to an open home
- Just curious about what properties in your area are actually worth and why
Free sample prompt from Chapter 3
Use an AI with web search enabled - many free versions instead rely on training data and cannot do web searches. If you're not sure - just ask the AI first.
Copy and paste the prompt below into the AI and add the address you are researching. Property details are optional but add them in yourself if any online information is wrong or it's a new build.
Prompt
I want to find comparable sold properties for [street address, suburb, city] in New Zealand. The property is: [property type - standalone/townhouse/unit/apartment] | [bedrooms] bed / [bathrooms] bath | [floor area if known] | [land area if known] | built [era if known] It also has these desirable features: [] to use to find comparables. Work through these steps in order. Do not skip a step or move to the next until the current one is complete. Step 1 - Confirm the target property Go to propertyvalue.co.nz and look up [street address, suburb, city]. Confirm bed/bath count, floor area, land area and year built. Provide the direct URL. Step 2 - Street comparables (primary source) Go directly to the propertyvalue.co.nz street page for [street name, suburb]. Read the entire page to the bottom - do not stop partway. Extract every property with a confirmed sale price in the last 6 months. If you cannot access the page, tell me the exact URL you tried and ask for help before moving on. Checkpoint: confirm you have accessed the propertyvalue.co.nz street page and found the sales listed there before continuing. If you find fewer than 5 sales in 6 months, tell me and I will decide whether to extend to 12 months. Step 3 - Address searches (secondary source) For each comparable found in Step 2: search Google for the exact address in the format "[street address], [suburb], New Zealand" and read every result. This finds agent listings and listing copy regardless of which agency website it sits on. Do not search by agent name. Do not browse agency websites by suburb. Note: TradeMe removes sold listing pages over time. If you cannot find a TradeMe page for an older sale, this is a platform limitation not a research failure - tell me that. Step 4 - Expand if needed If fewer than 5 comparables found, expand to nearby streets within 2km. Search realestate.co.nz, OneRoof and TradeMe Property. Tell me which streets you searched. Step 5 - URL persistence If any URL returns an error, try 2 to 3 alternative URL formats before abandoning the source. Tell me what you tried. For each comparable found, provide: - Address and property type - Bedrooms / bathrooms / floor area / land area - Confirmed sale price and date - One line: why it is or is not comparable to [address] - Direct URL to the source Label each one: Could be a close comparable / May be comparable / Historical reference only Do not estimate. Do not rely on search snippets. Fetch and read every page to the end. If you cannot access a page tell me the exact error and I will find the page and paste it back to you.
Online estimates see the house but they only know what they know. They may not know the kitchen was renovated last year, that maintenance has been quietly deferred, or that the view from the living room is genuinely extraordinary.
And there is something else the algorithm will never see: why a house sold for its price. Was the vendor desperate to move? Did they hold out for months? These are not hidden secrets. They are often written into the data if you know how to read it.
This guide teaches you to read it - by instructing AI to find and analyse what is publicly available. You'll see what comparable homes actually sold for and whether there were any signals about why.
Written by a human with AI. Every source to claims is cited directly. Every claim has a linked URL.
The data this guide surfaces has been hidden or outright hard to find because there are commercial interests to doing so. Now you can find out more on your own to suit your situation.
It gives you access to the public data that exists on any NZ property, sourced, linked and explained in plain language.
This guide does not produce a valuation and does not give legal or financial advice, nor does the guide cover the mechanics of buying and selling. It does not replace due diligence nor physical inspection of a property.