What are the two key concepts that should permeate the entire appraisal?

The two key concepts that should permeate the entire appraisal are consistency and support. Consistency refers to the requirement for uniformity in applying appraisal methods and standards throughout the process. This ensures that similar properties are evaluated using the same criteria, promoting fairness and comparability in the assessments.

Support involves providing a solid foundation for the conclusions drawn in the appraisal. This means that all opinions of value must be backed up by relevant data, analysis, and credible sources, ensuring that the appraisal holds up under scrutiny. Proper support enhances the credibility and defensibility of the appraisal outcome.

While other concepts like accuracy, reliability, and attention to detail are important in appraisal practice, the essence of an effective appraisal lies in maintaining a consistent approach and presenting well-supported findings. These two elements work together to foster trust in the appraisal process and its results.