What Is a Comparative Market Appraisal and How Does It Work

A comparative market appraisal (CMA) is the process by which a real estate agent estimates the likely market value of your property based on recent comparable sales. It is the standard tool used across the Canterbury market to inform listing price decisions and is provided free by agents as part of the listing preparation process.

What a Good CMA Involves

A well-prepared CMA involves: inspection of your property (agents should physically walk through, not provide a drive-by estimate); research into recent comparable sales - properties similar to yours that have sold in your suburb and adjacent streets within the last three to six months; analysis of current active listings to understand your competition; adjustment for the specific features of your property that differentiate it from the comparables; a written summary showing the comparable sales evidence and the reasoning behind the estimated price range; and a recommended listing strategy and sale method based on your property type and the current market conditions.

What a Poor CMA Looks Like

A poor CMA may involve: a high estimate unsupported by specific comparable sales evidence; comparables drawn from different suburbs, different property types, or sales more than 12 months old that do not reflect current market conditions; little or no explanation of how the estimate was reached; and an absence of the agent physically inspecting the property. Unfortunately, inflated appraisals to win listings are a recognised problem in New Zealand real estate. Agent Finder NZ has noted that agents who are modest about their property appraisal estimates with the aim of exceeding them are better representatives than those who over-promise and under-deliver.

How Many Appraisals Should You Get

Get a minimum of three appraisals from agents at different agencies before making any listing decision. This gives you a range of professional opinions and allows you to assess the quality of the reasoning behind each one. Significant outliers in either direction deserve scrutiny. If two appraisals cluster around $750,000-$800,000 and one comes in at $900,000, ask the outlier agent to show you the specific comparable sales that support the higher estimate.

CMA vs Registered Valuation

A CMA is an agent's professional opinion and carries no formal liability. A registered valuation from a PINZ-registered valuer is a formal document with professional liability and is typically used when an independent third-party assessment is required (bank lending, legal disputes, relationship property settlement). For most Canterbury property sales, a good-quality CMA from an experienced local agent is sufficient to establish a reliable price range.

For general information only. Always get multiple appraisals before deciding on a listing price.