Correcting the appraisal roll under §25.25 — clerical errors and the one-third rule

Section 25.25 is not a late protest. A Chapter 41 protest — the route described in the self-file protest guide — argues about what the value should be, on market-value or unequal-appraisal grounds. A §25.25 motion instead asks the roll to be corrected, and the two main routes have very different reach: §25.25(c) fixes specific categories of error going back up to five years, and §25.25(d) reaches an over-appraisal so large that the roll value exceeds the correct market value by more than one-third. Knowing which job each one does — and does not do — is most of what this guide is for.

A §25.25(c) motion can correct the roll for any of the five preceding tax years, but only for defined categories of error: clerical errors that affect liability, multiple appraisals of the same property in the same year, property that does not exist in the form or at the location described on the roll, and an incorrect owner. These are real and worth checking — duplicated improvement records and transposed figures do happen, and five years of correction can be meaningful money.

The equally important half: §25.25(c) cannot be used to relitigate value or equity. Section 25.25(o) makes that explicit — a motion that is really a disagreement about the appraised value dressed as an error correction is barred. If the complaint is “the number is too high compared with similar buildings,” that is an unequal-appraisal argument, and it belongs in a Chapter 41 protest (see how the equity test works), not a (c) motion.

Section 25.25(d) is the one route that reaches value after the protest season — and it is deliberately hard to use. Three things have to be true, and the third is the one promoters tend to leave out:

Run the trade-off honestly. A motion that barely clears the one-third line recovers a modest tax difference and then hands 10% of the corrected-value tax back as a penalty — the net can be small. The motion makes sense for genuinely extreme errors, such as a value that doubled on a data mistake nobody protested in time. It is a poor fit for the ordinary over-assessment, which is exactly why the on-time protest window each spring — and every fresh 30-day window a supplemental or corrected notice opens — is worth so much more than any after-the-fact repair.

One more route deserves a sentence: under §25.25(h), the owner and the chief appraiser can jointly move to correct the roll when both sides agree an error occurred. If a conversation with the district establishes a genuine mistake, the joint motion is the simple way to fix it — no hearing fight required.

Corriden’s evidence packet is built for one specific instrument: the unequal-appraisal (equity) test of §41.43(b)(3), which compares a parcel’s assessed value against the median of comparable properties on the public roll in a Chapter 41 protest. A §25.25(d) motion turns on a different standard — the property’s correct market value — so the packet is not §25.25(d) evidence, and we say so plainly. What the free parcel lookup still gives you, any month of the year, is the informational starting point: whether the parcel appears over-assessed against comparable properties — an informational estimate, not an appraisal. If a protest window is open (or reopens — see the missed-deadline guide), the flat-fee packet (from $299) assembles the full comparable-median study you file yourself; the fee is flat and never a share of any result.