New Mexico property tax appeals
Review the sourced process overview below, then get the New Mexico DIY Appeal Kit with an evidence workbook, filing controls, official links, and an editable appeal letter in one PDF. No parcel-specific comps.
How a New Mexico appeal actually works
Every statement below is cited to its primary source and shows the date we verified it. Where we could not confirm something from a primary source, we say so instead of guessing. Dataset last re-verified 2026-08-13.
Missed the main deadline? New Mexico has 4 remedies most homeowners never hear about
County pages rarely surface these. Each one is a distinct legal route with its own clock.
Pre-hearing inspection of the assessor's valuation records
VERIFIED VERBATIM FROM NMTRD: 'If you wish to inspect records available in the county assessor's office with respect to the valuation of the property, you may do so prior to your hearing date before the Board. Please make any requests in a timely manner as to avoid undue delay in the protest hearing process. The assessor has thirty days to respond to discovery requests you may file, but is only required to provide you fifteen days' notice of your hearing. Therefore, do not wait until you receive notice of the hearing to begin preparing your case.' In a non-disclosure state this is the primary mechanism for obtaining the comparable data underlying the assessor's valuation. THE TIMING IS ADVERSARIAL BY DESIGN - thirty days to respond against fifteen days' hearing notice - so the discovery request must be filed SIMULTANEOUSLY with the Sec. 7-38-24 petition. Build this into the filing workflow as a single combined action; it is the highest-leverage automation in New Mexico.
When:
primary source · verified
Informal conference with the appraisal staff
VERIFIED VERBATIM FROM NMTRD: 'Many protests can be resolved prior to the protest hearing. It is encouraged that you meet with the appropriate appraisal staff in an Informal Conference. The purpose of the informal conference is to discuss the facts and the legal positions of the assessor and the taxpayer... See NMAC Sec. 3.6.7.33 B below for more information. If you are unable to resolve your protest through an informal conference your protest will be heard by the County Valuation Protests Board.' The informal conference is optional and does not displace the Board hearing, so unlike Arizona's Sec. 42-16056(B) five-day agreement there is no verified waiver trap - but the terms of any resolution reached should be reviewed before acceptance.
When:
primary source · verified
Claim for refund in district court
An alternative judicial remedy exists under the Property Tax Code permitting a claim for refund to be brought in district court, distinct from the Sec. 7-38-24 protest track. The NMTRD's State Assessed Property appeal guidance identifies 'Sections 7-38-21 and 22, 7-38-39 and 40 NMSA 1978' as the procedures for protesting values determined by the Property Tax Division, which places Sec. 7-38-40 in the refund-claim family.
Protest of values determined by the state Property Tax Division
For property valued by the Department rather than the county assessor, a separate track applies. NMTRD's State Assessed Property Bureau guidance states that 'The procedures for protesting the value determined for property taxation purposes by the Property Tax Division are found in Sections 7-38-21 and 22, 7-38-39 and 40 NMSA 1978 of the Property Tax Code.' Not applicable to ordinary residential property, which is county-assessed, but relevant to any commercial or utility line of business.
NMSA 1978 Sec. 7-38-21; Sec. 7-38-22; Sec. 7-38-39; Sec. 7-38-40 · primary source · verified 2026-08-12
What evidence wins in New Mexico
New Mexico values property at market value determined by comparable sales, income, or cost methods, or a combination, applying generally accepted appraisal techniques (Sec. 7-36-15(B)). For residential property the sales comparison approach dominates. THE PROTESTS BOARD'S JURISDICTION IS EXCEPTIONALLY BROAD - the county valuation protests boards have, in the words of authority reproduced in this research, the duty to hear a protest of the valuation of a taxpayer's property ON ANY GROUNDS WHATSOEVER, including the grounds of allegedly unconstitutional discrimination in comparison with assessments of other properties. That is an express constitutional-uniformity claim measured against OTHER PROPERTIES' ASSESSMENTS, which supports an assessment-comparables theory alongside the sales theory. Combined with Sec. 7-36-15(A)'s command that 'The same or similar methods of valuation shall be used for valuation of the same or similar kinds of property,' New Mexico offers both a market-value attack and a discrimination/uniformity attack. INCOME METHOD IS SUBORDINATE BY REGULATION - VERBATIM NMAC Sec. 3.6.5.22(A)(1): 'The income method of valuation is a method used to value property by capitalizing its income WHEN THE MARKET VALUE METHOD CANNOT BE USED DUE TO LACK OF DATA ON SALES OF COMPARABLE PROPERTIES and no special method specified... is applicable. The value of the property under the income method of valuation is determined by dividing the annual income by the applicable capitalization rate.' Subsections (2) through (6) elaborate: income is predicated on estimated future income realizable from the legally permitted highest and best use; where sufficient evidence of rental value is available, income is based on fair rent imputed from rent actually received and typical area rentals for similar property in similar use; where the property is encumbered by a lease, the cash rent considered is what the property would be expected to rent for at highest and best use were the rent renegotiated at the valuation date; where rental evidence is insufficient, imputed fair rent is developed from market information reflecting probable rental value in the open market; 'income' means net income, the difference between annual revenue or receipts, actual or imputed, from rental and the annual expenses relating to the property; and 'expenses' are those ordinary and necessary in the production of the revenue. THE SALES COMPARISON RELIABILITY FACTORS ARE ENUMERATED IN REGULATION and are the checklist a Protests Board will apply: the pamphlet's reproduced material identifies the sales comparison technique as producing 'an indication of the most probable sales price of the property being appraised,' with reliability dependent on enumerated conditions including 'the absence of nontypical conditions affecting the sales price.' EVIDENCE MUST BE PRESENTED AT THE HEARING, IN FIVE COPIES, AND ANYTHING GIVEN TO THE ASSESSOR EARLIER DOES NOT REACH THE BOARD - 'The Board will not have reviewed any materials you may have already provided to the assessor.' The hearing is ON THE RECORD and 'you must present all evidence and argument you wish the Board to consider at the hearing.'
primary source · verified 2026-08-12
The appeal ladder, in New Mexico's own terms
- 1
County Assessor - petition of protest, and optional informal conference
Deadline: VERBATIM NMSA 1978 Sec. 7-38-24(A)-(B), as reproduced in the New Mexico Taxation and Revenue Department's official protest pamphlet: '(A) A property owner may protest the value or classification determined by the county assessor for his property for property taxation purposes, the assessor's allocation of value of his property to a particular governmental unit or denial of a claim for an exemption or for a limitation on increase in value by filing a petition with the assessor. Filing a petition in accordance with this section entitles the property owner to a hearing on his protest. (B) Petitions shall: (1) be filed with the county assessor on or before: (a) the later of April 1 of the property tax year to which the notice applies... (b) thirty days after the mailing of a property tax bill on omitted property... or (c) in all other cases, thirty days after the mailing by the assessor of the notice of valuation;' The full text of clause (a), from the statute, is the later of April 1 of the property tax year to which the notice applies OR thirty days after the mailing by the assessor of the notice of valuation IF THE NOTICE WAS MAILED WITH THE PRECEDING YEAR'S TAX BILL. THE OPERATIVE RULE FOR THE ORDINARY HOMEOWNER IS CLAUSE (c): THIRTY DAYS AFTER THE MAILING BY THE ASSESSOR OF THE NOTICE OF VALUATION. The trigger is MAILING, not receipt. MANDATORY PETITION CONTENTS - Sec. 7-38-24(B)(2)-(4): the petition shall '(2) state the property owner's name and address and the description of the property; (3) state why the property owner believes the value, classification, allocation of value or denial of a claim of an exemption or of a limitation on increase in value is incorrect and what he believes the correct value, classification, allocation of value or exemption to be; and (4) state the value, classification, and allocation of value or exemption that is not in controversy.' NOTE (B)(4) - the petitioner must affirmatively state what is NOT in dispute. WHAT HAPPENS NEXT - Sec. 7-38-24(C): 'Upon receipt of the petition, the county assessor shall schedule a hearing before the county valuation protests board and notify the property owner by certified mail of the date, time and place that he may appear to support his petition. The notice shall be mailed at least fifteen days prior to the hearing date.' INFORMAL CONFERENCE IS OPTIONAL AND ENCOURAGED - from the NMTRD pamphlet: 'Many protests can be resolved prior to the protest hearing. It is encouraged that you meet with the appropriate appraisal staff in an Informal Conference. The purpose of the informal conference is to discuss the facts and the legal positions of the assessor and the taxpayer. See NMAC Sec. 3.6.7.33 B.'
Clock starts: The date the county assessor MAILED the notice of valuation. Alternative triggers: for a notice mailed with the preceding year's tax bill, the later of April 1 of the property tax year to which the notice applies or thirty days after mailing; for omitted property, thirty days after the mailing of a property tax bill on omitted property.
NMSA 1978 Sec. 7-38-24(A), (B), (C) · primary source · verified 2026-08-12
Form: Petition of protest filed with the county assessor
primary source · verified 2026-08-12
Fee: $0
No filing fee is referenced in NMSA 1978 Sec. 7-38-24 or in the NMTRD protest pamphlet · primary source · verified 2026-08-12
- 2
County Valuation Protests Board
Deadline: NO SEPARATE FILING DEADLINE - THE HEARING IS SCHEDULED AUTOMATICALLY BY THE ASSESSOR ON RECEIPT OF THE PETITION. This is a structural advantage over every other state in this region: there is no second deadline for the taxpayer to miss between the assessor and the county board. VERBATIM Sec. 7-38-24(C): 'Upon receipt of the petition, the county assessor shall schedule a hearing before the county valuation protests board and notify the property owner by certified mail of the date, time and place that he may appear to support his petition. The notice shall be mailed at least fifteen days prior to the hearing date.' Filing the Sec. 7-38-24 petition 'entitles the property owner to a hearing on his protest' (Sec. 7-38-24(A)). BOARD COMPOSITION, verified verbatim from NMTRD: 'The three-member Board is INDEPENDENT of the county assessor's office, and is made up of two county residents appointed by the county commission and a property appraisal officer from the state Property Tax Division.' Board independence is a genuine selling point. DISCOVERY RIGHT AND ITS TRAP, verified verbatim from NMTRD: 'If you wish to inspect records available in the county assessor's office with respect to the valuation of the property, you may do so prior to your hearing date before the Board. Please make any requests in a timely manner as to avoid undue delay in the protest hearing process. THE ASSESSOR HAS THIRTY DAYS TO RESPOND TO DISCOVERY REQUESTS you may file, but is only required to provide you FIFTEEN DAYS' NOTICE of your hearing. Therefore, DO NOT WAIT UNTIL YOU RECEIVE NOTICE OF THE HEARING to begin preparing your case.' The arithmetic is deliberate and hostile: a 30-day response obligation inside a 15-day notice period means a taxpayer who waits for the hearing notice can never get discovery in time. Discovery must be requested at the moment the petition is filed. HEARING MECHANICS, verified verbatim from NMTRD: 'The valuation protest hearing will be ON THE RECORD, and you must present all evidence and argument you wish the Board to consider at the hearing.' 'You must bring FIVE COPIES of any materials that you want the Board to consider to the hearing with you. A copy of these materials should be provided to the assessor in advance of the hearing. THE BOARD WILL NOT HAVE REVIEWED ANY MATERIALS YOU MAY HAVE ALREADY PROVIDED TO THE ASSESSOR.' 'This pamphlet and your protest petition will be made part of the record.'
Clock starts: Automatic on the assessor's receipt of the Sec. 7-38-24 petition; the assessor must mail certified notice of the hearing at least fifteen days before the hearing date
NMSA 1978 Sec. 7-38-24(A), (C); NMSA 1978 Sec. 7-38-27; NMAC Sec. 3.6.7.36 · primary source · verified 2026-08-12
Form: No separate form - the Sec. 7-38-24 petition carries the protest to the board
primary source · verified 2026-08-12
Fee: $0
No filing fee is referenced for a County Valuation Protests Board hearing · primary source · verified 2026-08-12
- 3
New Mexico district court (appeal of the Protests Board order)
Deadline: THIRTY DAYS FROM THE BOARD'S ORDER. VERBATIM from the NMTRD protest pamphlet: 'If you disagree with a decision of the Board, you may appeal that decision to the district court in your jurisdiction WITHIN THIRTY DAYS OF THE BOARD'S ORDER. See NMSA Sec. 39-3-1.1, NMAC Sec. 3.6.7.37, and NMRA 1-074. THE ASSESSOR SHOULD BE NAMED AS APPELLEE. You must make arrangements for preparation of the record on appeal, and you must serve your notice of appeal to the address below.' The service address given is: [County] Valuation Protests Board, c/o Appraisal Bureau - Local Assessment Section, NMTRD, 1209 Camino Carlos Rey, 1st Floor, P.O. Box 25126, Santa Fe, NM 87504-5126, (505) 827-0885. NOTE THREE PROCEDURAL REQUIREMENTS THAT ARE EASY TO MISS: the assessor must be named as appellee; the appellant must arrange for preparation of the record on appeal; and the notice of appeal must be served on the Board at the NMTRD Santa Fe address, not merely filed with the court. BECAUSE THE BOARD HEARING IS ON THE RECORD, the district court appeal is a review of that record rather than a fresh trial - which makes the Board hearing the last opportunity to build the evidentiary case.
Clock starts: The County Valuation Protests Board's order
NMSA 1978 Sec. 39-3-1.1; NMAC Sec. 3.6.7.37; NMRA 1-074 · primary source · verified 2026-08-12
Form: Notice of appeal to district court under NMRA 1-074
primary source · verified 2026-08-12
Not confirmed from a primary source: Not verified. Note the additional and potentially significant cost of preparing the record on appeal, which the pamphlet places on the appellant. Check the official page before relying on this.
Who has to prove what
VERBATIM NMSA 1978 Sec. 7-38-6, Presumption of correctness, as reproduced by NMTRD: 'Values of property for property taxation purposes determined by the... county assessor are presumed to be correct...' THE MECHANISM FOR OVERCOMING IT IS SET OUT IN REGULATION AND IS THE MOST IMPORTANT PASSAGE IN THE NEW MEXICO RECORD. VERBATIM NMAC Sec. 3.6.7.13, Effect of the presumption of correctness: '(A) To overcome the presumption of correctness provided in Section 7-38-6 NMSA 1978, the taxpayer has the burden of COMING FORWARD WITH EVIDENCE showing that values for property taxation purposes determined by the... county assessor... are incorrect. Failure to present evidence tending to dispute the factual correctness of the above determinations in any hearing pursuant to the provisions of the Property Tax Code may result in a denial of relief sought by a taxpayer. (B) Where the ONLY evidence presented by the taxpayer is the purchase price of the property which is the subject of the dispute over value for tax purposes and the evidence of comparable sales indicates the sales price was not the market value, the presumption of correctness of the determination of the... county assessor IS NOT OVERCOME. (C) ONCE THE PRESUMPTION OF CORRECTNESS IS OVERCOME, THE BURDEN OF SHOWING A CORRECT VALUATION SHIFTS TO THE... COUNTY ASSESSOR.' Note that the taxpayer's burden under (A) is one of PRODUCTION - 'coming forward with evidence' - not persuasion. Once discharged, subsection (C) shifts the burden of showing a correct valuation to the assessor. That is a materially lower bar than a conventional preponderance burden and is closer in effect to the Texas rule than it first appears.
primary source · verified 2026-08-12
When values are set
Annual, with a January 1 valuation date. VERBATIM NMSA 1978 Sec. 7-38-7: 'All property subject to valuation for property taxation purposes shall be valued as of January 1 of each tax year...' The appeal right is triggered by the mailing of the annual notice of valuation, and the protest deadline of thirty days from that mailing recurs every year.
primary source · verified 2026-08-12
How counties differ
New Mexico is STRUCTURALLY UNIFORM and is the simplest state in this region to operate at scale. The protest deadline is set by statute at thirty days from the assessor's mailing of the notice of valuation (Sec. 7-38-24(B)(1)(c)) and applies identically in all thirty-three counties. There is NO second taxpayer deadline between the assessor and the county board - Sec. 7-38-24(C) requires the assessor to schedule the Protests Board hearing automatically on receipt of the petition and to give at least fifteen days' certified-mail notice. The County Valuation Protests Boards are constituted identically statewide: three members, two county residents appointed by the county commission and one property appraisal officer from the state Property Tax Division, and the board is independent of the assessor's office. Board administration is centralised at the state level - the service address for all boards is c/o Appraisal Bureau, Local Assessment Section, NMTRD, 1209 Camino Carlos Rey, 1st Floor, P.O. Box 25126, Santa Fe, NM 87504-5126. Hearing procedure is governed by statewide statute and regulation (Sec. 7-38-27; NMAC Sec. 3.6.7.36) and the five-copies requirement is uniform. THE VARIATION THAT DOES EXIST IS PER-COUNTY AND PER-PARCEL NOTICE MAILING DATES, since the thirty-day clock runs from each assessor's mailing, and per-county petition forms, since Sec. 7-38-24(B) prescribes contents but no statewide numbered form. Bernalillo County (Albuquerque) holds the largest share of New Mexico residential parcels and should be the first integration, followed by Santa Fe and Dona Ana.
New Mexico appeal deadline
Deadlines varyNew Mexico deadlines are set locally.
The deadline is almost always printed on the assessment notice your local assessor mails you. Use that date, it is the one that counts.
Are you missing a New Mexico exemption?
Exemptions cut your bill before any appeal even starts, and most homeowners never claim all the ones they qualify for. Answer four questions:
Is your New Mexico home over-assessed?
The whole appeal hinges on one comparison: your assessed value (from your tax notice) versus your home's market value (what it would sell for today). Put both in:
How to find your home's real market value (free) →
- Pull free estimates. Look up your address on Zillow (“Zestimate”) and Redfin (“Redfin Estimate”). Average them, algorithms run high or low, so two beats one.
- Find 3-5 real comparable sales. Same neighborhood, similar size, beds/baths, age, and condition, sold in the last 6-12 months. Recent sales (not listings) are the strongest evidence a board will accept.
- Adjust for differences. Knock value off comps that are bigger or renovated; add for ones that are smaller or dated, so you're comparing like-for-like.
- Compare to your assessment. If your assessed value sits clearly above that adjusted market figure, you have grounds to appeal.
One catch: some states assess at a fraction of market value (an “assessment ratio”). If your notice shows a ratio or an “equalized” value, compare your implied full value to market, not the raw assessed number.
How property tax appeals generally work
Most states follow the same basic path: your local assessor mails an assessment notice with a value and a deadline; you file an appeal (often called a protest, grievance, or petition) before that deadline; you present comparable sales of similar homes; and a local board reviews the evidence and can lower your value.
The exact form, deadline, and board can vary by county. Use the current assessment notice and the official sources linked above to confirm the controlling local requirements. The paid kit organizes that verification, the evidence, the filing steps, and your editable letter in one place.
Want to see the depth we build per state? Take a look at our Texas, Florida, and Georgia guides.