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How to Find Errors on Your Property Tax Record Card

Learn how to review an assessor property record card for square footage, condition, basement, garage, lot, and improvement errors.

Quick answer: Compare the assessor’s property record with the property as it actually existed on the valuation date. Focus on facts that can influence value: square footage, finished areas, bathrooms, garages, lot characteristics, condition, and major improvements.

Many property-tax disputes begin with market value, but factual data is often easier to verify. If the model starts with the wrong facts, the resulting value may also be wrong.

Where do you get the property record card?

Many assessor websites provide parcel records online. If not, request the record directly from the assessor. Ask for the detailed property card, not only the public tax-bill summary.

Check building measurements

Review gross living area, story count, basement area, finished basement area, additions, porches, decks, garages, and accessory structures. Understand whether the assessor’s measurement standard differs from a real estate listing before assuming a discrepancy is an error.

Check quality and condition

Assessment systems may assign condition or quality grades. If your property requires substantial repair but the record assumes average or renovated condition, document the difference with photos and estimates.

Check improvements

Verify that listed improvements actually exist and are described accurately. A removed structure, unfinished project, or incorrectly coded feature can matter.

Check land characteristics

Lot size, frontage, shape, access, topography, wetlands, easements, and location influences may affect land value. Compare the assessor’s data with surveys or other reliable records.

How do you present a correction?

Create a short list with three columns: assessor record, correct fact, supporting proof. That format makes factual corrections easy to review.

Start your appeal with the facts.
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Frequently asked questions

Property tax FAQ

What is a property record card?

It is the assessor’s record of the parcel and improvements, often including measurements, construction details, condition, features, and valuation data.

What property record errors matter most?

Errors that materially affect value—such as overstated living area, finished space, condition, garages, bathrooms, lot characteristics, or improvements—deserve close review.

How do I prove the assessor’s record is wrong?

Use photographs, surveys, floor plans, permits, contractor records, measurements, inspection reports, or other reliable documentation.

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Take the next step with a complete property tax appeal guide.

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