Alan Lishman
Comparing Online Valuation Tools and Professional Appraisal: Pros and Cons.

Online Valuation Tools vs Professional Appraisal: Pros and Cons

When it comes to determining the value of a property, there are two main options available: using online valuation tools or seeking a professional appraisal. Both methods have their advantages and disadvantages. In this article, we will explore the pros and cons of each approach to help you make an informed decision.

Online Valuation Tools

Online valuation tools have gained popularity in recent years thanks to their convenience and accessibility. These tools use algorithms and data analysis to estimate the value of a property based on various factors such as location, size, and recent sales data. Here are some pros and cons of using online valuation tools:


  • Convenience: Online valuation tools allow users to get a quick estimate of a property’s value without the need for scheduling appointments or waiting for a professional to conduct an appraisal.
  • Cost-effective: Most online valuation tools are free to use, making them a budget-friendly option for those who are looking for a general idea of a property’s value.
  • Instant Results: With just a few clicks, users can obtain an estimated value for a property within seconds.


  • Lack of Accuracy: Online valuation tools provide only an estimate and may not accurately reflect the true value of a property. They cannot take into account unique features, improvements, or the condition of the property, which can significantly impact its value.
  • Reliance on Data: These tools heavily rely on data inputs, which may not always be up to date or accurate. Factors such as recent sales data and market fluctuations may not be adequately reflected in the algorithm.
  • No Personalized Assessment: Online valuation tools cannot consider subjective factors that can affect a property’s value, such as the overall condition, interior upgrades, or the appeal of the neighbourhood.

Professional Appraisal

When accuracy and a comprehensive assessment are essential, seeking a professional appraisal is the preferred route. Here are some pros and cons of opting for a professional appraisal:


  • Expertise and Insight: Professional appraisers have in-depth knowledge and experience in evaluating properties. They take into account various factors and utilise their expertise to provide an accurate and detailed valuation.
  • Personalized Assessment: Appraisers conduct an on-site inspection of the property, considering its specific features, condition, and improvements. This allows for a more personalised and accurate assessment of its value.
  • Useful in Complex Situations: Professional appraisals are often necessary for situations such as obtaining mortgage financing, estate planning, or legal disputes, where accuracy and an expert’s opinion are crucial.


  • Cost: Hiring a professional appraiser can be more expensive compared to using online valuation tools. The cost will depend on factors such as the property’s size, location, and complexity.
  • Time-consuming: A professional appraisal requires scheduling an appointment and allowing time for the appraiser to conduct an on-site inspection and prepare a comprehensive report, which can take several days or weeks.
  • Subjectivity: While professional appraisals strive for objectivity, personal judgement and subjective opinions may still play a role in the assessment process.

Online valuation tools and professional appraisals serve different purposes in determining property values. Online valuation tools offer convenience and quick estimates, making them suitable for preliminary research or gaining a general idea of a property’s value. However, they lack the accuracy and personalised assessment that professional appraisals provide. For situations requiring a comprehensive and precise valuation, such as mortgage financing or legal purposes, seeking a professional appraiser is highly recommended. Ultimately, the choice depends on your specific needs, budget, and the level of accuracy required for your particular situation.