What Makes a Comparable Property Actually Useful?
A comparable property is useful because it helps explain a specific similarity or difference—not because its number is lower.
Property-tax evidence often becomes weaker when comparisons are selected only for an attractive value. A short, well-explained set of genuinely similar properties is usually easier to inspect than a large list with hidden differences.
Start with the subject property
Before searching for comparisons, verify the official description of the homeowner’s property. Record the authority’s reported living area, lot size, age, class, construction, quality, condition, and major features.
Keep any owner-known corrections separate until the homeowner has reviewed and approved them.
Look for material similarity
Relevant characteristics vary by jurisdiction and property type. Common considerations include location, use, size, age, construction, quality, condition, land characteristics, improvements, and the effective date of the assessment.
No property is perfectly identical. The useful work is explaining material differences rather than pretending they do not exist.
Separate sales from assessments
A sale price, assessed value, listing price, and automated estimate are different kinds of information. Label each source accurately and preserve its retrieval date.
County or appraisal-authority records are the source for public assessed values. Other sources may enrich the analysis but should not silently replace the public record.
Avoid cherry-picking
A transparent selection method identifies the search area, time period, filters, and reasons properties were included or excluded. If a comparison is materially larger, newer, renovated, differently classified, or in a different submarket, say so.
The goal is not to predict what a decision-maker will accept. It is to make the reasoning readable and reproducible.
FairPath organizes sourced comparisons and owner-approved evidence into a document packet for homeowner review. It does not guarantee that a comparison will be accepted or that an assessment or tax bill will change.
