Adult Guardianship and Conservatorship Petition Requirements in New Mexico

At a glance

Requirements one by one

Proceeding and state terminology

New Mexico uses guardian for personal care and conservator for estate and financial affairs. Section 45-5-101 defines the roles and measures incapacity by functional impairment over time. The ordinary adult tracks use separate petitions: § 45-5-303 for guardianship and § 45-5-404 for conservatorship.

Who may file and where

Section 45-5-303(A) allows an interested person—someone interested in the adult's welfare—to seek guardianship. Section 45-5-404(A) permits a person interested in the adult's estate, financial affairs, or welfare, including a person adversely affected by ineffective management, or the adult's guardian to seek conservatorship.

Guardianship venue under § 45-5-302 is the judicial district where the adult resides or is present, with an additional option in the district of a court that ordered institutional admission. Section 45-5-403 uses the same basic rule for conservatorship and adds a property-based district for a nonresident.

What the petition must contain

Sections 45-5-303(B) and 45-5-404(B) require closely parallel filings. The petition identifies the adult, spouse or committed partner, relatives and qualifying stepchildren, caregiver, current lawyer, representative payee, existing guardian or conservator, trustee or custodian, veterans fiduciary, health-care and financial agents, routine decision supporter, and proposed appointee. It describes the functional need, property and income, communication supports, full-versus-limited relief, and the requested powers or controlled property.

Each filing must identify less restrictive alternatives considered or implemented, explain why none were considered if applicable, and explain why an alternative cannot meet the adult's need.

Proof required for appointment

The adult starts with a legal presumption of capacity. Section 45-5-303(I) places the burden on the petitioner and requires clear and convincing evidence. For guardianship, § 45-5-304(C) requires total or area-specific incapacity, necessity for continuing care, supervision, and rehabilitation, no suitable alternative resources, least-restrictive scope, and a qualified and suitable guardian.

For conservatorship, § 45-5-401(B) supplies the threshold property-and-support test. Section 45-5-407(I) then requires clear and convincing evidence of total or area-specific incapacity, necessity for effective estate or financial management, no available alternative resources, least-restrictive scope, and a qualified and suitable conservator.

Alternatives the court must address

New Mexico builds alternatives into every stage. The petitions must discuss them. The guardianship GAL must identify and present all available alternatives under § 45-5-303.1. The visitor divides personal or financial tasks into those the adult can manage alone, those manageable with supports, and those the adult cannot manage even with help. Sections 45-5-304 and 45-5-407 make least-restrictive intervention and the absence of suitable resources express appointment findings. For financial needs, § 45-5-405.1 also permits a targeted protective arrangement or single transaction without appointing a conservator.

Notice, service, and hearing timing

Sections 45-5-309 and 45-5-405 require personal service of the petition and hearing notice on the adult. The notice explains hearing rights, attendance, and the nature, purpose, and consequences of appointment. Listed relatives, caregivers, fiduciaries, agents, and other court-selected interested persons also receive notice.

The specific adult-personal-service provisions do not state a fixed lead time. For general interested-person notice, § 45-1-401 permits mail at least 14 days before the hearing, civil-process service, or three weekly publications with the last at least 10 days before the hearing when identity or address cannot be found. The court may change method or timing for good cause.

Counsel and hearing rights

Under § 45-5-303(D) and § 45-5-407(B), the court appoints counsel unless the adult already has a lawyer of the adult's choice. Court-appointed counsel also performs the guardian-ad-litem duties in §§ 45-5-303.1 and 45-5-404.1: interview the adult, present the adult's stated position, review the clinician and visitor reports, interview key participants, and obtain independent assessments if needed.

The adult ordinarily attends. Sections 45-5-303(G) and 45-5-407(E) permit absence only when the court finds attendance is not in the adult's best interest because of a health-or-safety threat. The adult may present evidence, subpoena witnesses and documents, examine the GAL, clinician, and visitor, and otherwise participate. The court may hold the hearing at the adult's location. On request by the petitioner or adult, the court must schedule a jury trial under § 45-5-303(O) or § 45-5-407(R).

Medical evidence or court evaluator

Both evidence tracks are mandatory. Section 45-5-303(E) requires a court-appointed qualified health-care professional to report on the nature and degree of incapacity, intellectual, developmental, and social functioning, and the ability to make health-care decisions and manage daily activities. Section 45-5-407(C) requires the parallel financial report on the ability to manage the estate or financial affairs.

The court also appoints a visitor under § 45-5-303(F) or § 45-5-407(D). The visitor interviews the adult and proposed appointee, visits the residence, evaluates needs and supported functioning, and recommends whether the proposed appointment is appropriate. The GAL reviews both reports before filing a report prior to the hearing.

Limits on the order

Section 45-5-301.1 limits guardianship to the adult's actual functional mental and physical limitations and preserves every right not expressly limited or granted to the guardian. Section 45-5-304 requires clear findings for either a full or limited guardian and tells the adult about appeal and later alteration or termination.

Section 45-5-407(J) requires a limited conservator when the adult can manage some but not all financial matters. The court specifies and may further restrict each power. Subsection (K) preserves every legal and civil right not specifically granted to the conservator, and subsection (S) requires notice of appeal and review rights.

Temporary relief is separate. Sections 45-5-310 and 45-5-408 require serious, immediate, and irreparable harm, a hearing within ten business days, specified powers, and an initial term no longer than 30 days, with one possible extension of no more than 60 days for good cause. An ex parte appointment triggers personal service on the adult and counsel within 24 hours.

What trips people up

New Mexico does not use only a medical certificate. The ordinary case requires three separate professional roles: the adult's lawyer acting with GAL duties, a court-appointed qualified health-care professional, and a court-appointed visitor. The clinician addresses functional capacity; the visitor investigates real-world tasks, supports, residence, and the proposed appointee; the GAL presents the adult's position and tests the other reports.

The hearing is also not automatically a bench-only proceeding. A jury does not occur by default, but § 45-5-303(O) and § 45-5-407(R) say the court shall schedule one when the petitioner or adult requests it.

Common questions

Can the adult simply consent to conservatorship?

No. Section 45-5-407(F) says the court shall not permit the person to consent to appointment. The petitioner still must prove the statutory case by clear and convincing evidence.

Is a diagnosis by itself enough?

No. Section 45-5-101 defines incapacity through functional impairment shown over time, and §§ 45-5-304 and 45-5-407 require necessity, lack of suitable alternatives, and least-restrictive findings in addition to incapacity.

Can the court solve one financial problem without appointing a conservator?

Yes. Section 45-5-405.1 allows a protective arrangement or targeted transaction, including benefit, payment, property, trust, contract, or claim-settlement relief, when the statutory basis exists but a full conservatorship is unnecessary.

How long can a temporary appointment last?

The initial temporary guardianship or conservatorship may last no more than 30 days. After a hearing and good-cause showing, the court may extend it once for no more than 60 additional days under §§ 45-5-310 and 45-5-408.

Statutes and sources

• NMSA 1978, § 45-5-101(C): incapacity is functional impairment shown over time, and the "least restrictive form of intervention" preserves the greatest personal freedom and civil liberties. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-1-401(A): general hearing notice may be mailed "at least fourteen days before" the hearing, personally served, or published, and the court may change method or time for good cause. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-301.1: guardianship "shall be ordered only to the extent necessitated by the person's actual functional mental and physical limitations," with all unremoved rights retained. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-302: guardianship venue is where the adult "resides or is present," with the court-ordered-institution option. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-303(A): "An interested person may petition"; counsel, clinician, visitor, clear-and-convincing proof, participation, and jury-on-request rules govern the guardianship hearing. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-303.1(A): the GAL interviews the adult, presents the adult's position, "identify[ies] and present[s] all available less restrictive alternatives," reviews reports, and may obtain independent assessments. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-304(A): clear and convincing findings must cover incapacity, necessity, no suitable alternatives, least-restrictive scope, and a qualified guardian. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-309(A): the petition and hearing notice "shall be served personally" on the adult and notice also goes to listed and court-selected interested persons. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-310(A): temporary guardianship requires "serious, immediate and irreparable harm," a hearing within ten business days, a 30-day initial cap, and at most one 60-day extension. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-401: conservatorship requires vulnerable property or needed funds plus incapacity or another statutory inability to manage financial affairs. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-403: conservatorship venue is where the adult resides or is present, where a nonresident has property, or where the institutional-ordering court sits. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-404(A): an interested person or guardian may petition, and the filing must describe need, alternatives, scope, property, contacts, and communication supports. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-404.1(A): the conservatorship GAL interviews the adult and key participants, reviews the clinician and visitor reports, may obtain independent assessments, and reports before the hearing. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-405(A): the petition and hearing notice "shall be served personally" on the adult, with § 45-1-401 service when personal service cannot be made. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-405.1(A): without appointing a conservator, the court may order a protective arrangement, targeted transaction, or access restriction. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-407: counsel, clinician, visitor, clear-and-convincing findings, limited powers, retained rights, participation, and jury-on-request rules govern the conservatorship hearing. Official Chapter 45 text (accessed 2026-07-18).
• NMSA 1978, § 45-5-408(A): temporary conservatorship requires serious, immediate, and irreparable financial harm, a hearing within ten business days, a 30-day initial cap, and at most one 60-day extension. Official Chapter 45 text (accessed 2026-07-18).