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Is this price reasonable?

How to sanity-check a specific listing or sale price using real comparable sales and suburb context — the method professional valuers use, not a black-box number.

Jurisdiction: Australia-wide method; Victorian sources (LANDATA, underquoting law) cited for the specific tools and rules·Sources last verified: 21 Aug 2026·Written by: Delora editorial team·Last reviewed: 2026-08-28·Change history
Key points
  • A suburb median describes the whole suburb, not any one property — it can't tell you whether a specific listing or sale is priced fairly on its own.
  • Professional valuers primarily use the sales comparison approach: comparing a property against genuinely similar properties that have actually sold recently.
  • Only a confirmed, settled sale price reflects what a real buyer actually paid — an asking price or online estimate hasn't been tested by the market yet.
  • LANDATA, Victoria's official land information service, sells reports showing real comparable sale prices for a specific property or nearby similar properties.
  • A price that looks like an outlier usually has a real, identifiable reason — a bigger block, development potential, or auction competition — not a mysterious one.

The question a suburb median can't answer

"Is this a good price?" is one of the most common questions a buyer asks about a specific listing or a sale they've just seen — and a suburb median genuinely can't answer it. A median describes every house or unit that sold across an entire suburb, in every condition, on every kind of block (Valuer-General Victoria / Land Use Victoria, verified 29 Jul 2026); it was never built to tell you whether one specific address, with its own condition, land and features, is priced fairly. Confusing the two is the single most common mistake in this kind of research — comparing a specific listing directly against the suburb-wide average, rather than against genuinely similar properties.

The method professional valuers actually use

Professional valuers primarily use the "sales comparison approach" — estimating a property's value by comparing it against genuinely comparable properties that have actually sold, then adjusting for real differences between them (Australian Property Institute, verified 21 Aug 2026). You can apply the same logic yourself, at a more general level, without a formal valuation. A genuine comparable sale shares the essentials: the same property type (house vs. unit vs. townhouse), a similar land size or floor area, a similar condition and standard of finish, and — importantly — it actually sold recently, not just listed. A single comparable tells you very little; look for several, and be honest with yourself about how closely each one actually matches, rather than picking the one that supports the number you were hoping for.

Confirmed sale prices, not asking prices

An asking price, an "offers over" figure or an online estimate hasn't been tested by the market yet — only a confirmed, settled sale price tells you what a genuine buyer actually paid. Victoria's own underquoting laws exist precisely because advertised price guides can understate what a property is likely to sell for, with real penalties for an agent who breaches them (Consumer Affairs Victoria, verified 30 Jul 2026) — see understanding price guides for the full detail on reading an asking price honestly. For comparable sales specifically, LANDATA — Victoria's official land information service — sells sales-history reports covering a specific property's past sale prices, and a Rates Objection report covering sales for similar nearby properties over the surrounding 12 months, the same evidence the Victorian government itself requires to formally object to a council rates or land tax valuation (LANDATA (operated by SERV, Victorian Government), verified 21 Aug 2026).

Use the suburb's own data as a backdrop, not a verdict

Delora's own suburb pages give you real, sourced context to sanity-check your comparable sales against: the current median, recent growth, and — critically — how many sales that median is based on (see sales volume and market depth for why that count matters). If your comparable sales all cluster well above or below the suburb median, that's worth a second look — either the property type or pocket you're comparing against genuinely commands a premium or discount, or one of your "comparables" isn't as comparable as it looked.

When a price looks like an outlier, there's usually a real reason

A price that looks well above what comparable sales suggest usually has a genuine explanation, not a mysterious one: a larger or better-positioned block, real development or renovation potential a simple comparison misses, a feature (a view, a particular street) the comparable sales don't share — or, very commonly at auction, competition and emotion pushing the result past what the evidence alone would predict. None of that means the comparable-sales method failed; it means that specific result had a specific cause, and it's worth identifying which one before assuming the whole market has simply moved.

Common mistake: comparing a specific listing or sale directly against the suburb median, rather than against a small number of genuinely similar recent sales — and treating an asking price as if it were a confirmed, settled sale price.

Practical checklist

Before deciding whether a price looks reasonable

  • Find several genuinely comparable sales — similar type, size and condition, sold recently, nearby
  • Use confirmed settled sale prices, not asking prices or online estimates
  • Check the suburb's median and how many sales it's based on as a sanity-check backdrop
  • If a price looks like an outlier, look for a specific reason before assuming the market has moved
  • Get a professional valuation before relying on any figure for a decision involving real money

Questions for a professional

  • Based on genuinely comparable recent sales, does this asking or sale price look reasonable?
  • What in this specific property explains any gap from the comparable sales — land, condition, position or something else?

Official resources

Important limitations: This teaches a general method for sanity-checking a price against comparable sales — it is not a valuation of any specific property and doesn't replace one. Delora doesn't estimate or endorse a value for any individual listing or sale. For a decision involving real money — an offer, a loan, a purchase — get a professional valuation, not just a comparable-sales sanity check.

Sources and methodology

Figures on this page are drawn from Delora's local knowledge graph, refreshed from these primary sources and checked for changes on a regular schedule. If a figure here looks out of date, the official source above is always the authority — please let us know.

Evidence record
Written by
Delora editorial team
Jurisdiction
Australia-wide method; Victorian sources (LANDATA, underquoting law) cited for the specific tools and rules
Content type
Guide (general education, not financial advice)
Last reviewed
2026-08-21
Sources
See "Sources and methodology" above for cited sources