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New Mexico · Rio Grande Valley · Southwest · #102 Most Populous County in the US
Bernalillo County, New Mexico
New Mexico's largest county - home to Albuquerque, the Duke City, on the banks of the Rio Grande beneath the Sandia Mountains. Property tax, courts, public records, probate, and senior services for Bernalillo County residents.
Affiliate disclosure: This page contains affiliate links. We may earn a commission if you use them, at no extra cost to you. Our editorial recommendations are independent of these relationships.
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Bernalillo County's assessment ratio means effective tax rates are low — but incorrect appraisals still cost money. Ownwell manages the appeal with no upfront cost.
Office: Bernalillo County Office of Emergency Management – 6840 Second St NW, Albuquerque, NM 87107 | Emergency Management contact Tom Walmsley, (505) 468-1306 / cell (505) 977-5212, [email protected], [email protected]. Maintains a joint Bernalillo County/City of Albuquerque Emergency Operations Plan.
Sheriff: Bernalillo County Sheriff’s Office – 400 Roma Ave NW, Albuquerque, NM 87102 | (505) 468-7100; Sheriff John D. Allen. Non-emergency crime reporting for city limits: Albuquerque Police Department, (505) 242-2677.
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: I-25 and I-40 intersect in Albuquerque, the county seat and New Mexico’s largest city, in the central Rio Grande valley.
Notes: Bernalillo County, New Mexico’s most populous (roughly 680,000+ residents), is named for the town of Bernalillo, established in the early Spanish colonial period. Albuquerque was founded 1706.
Business & Permits
BUILDING & PERMITS
Office: Bernalillo County Building Permits & Zoning – 415 Silver Ave SW, Albuquerque, NM 87102 | County Manager’s Office, (505) 468-7000.
Notes: Bernalillo County is genuinely home to Petroglyph National Monument, one of the largest petroglyph sites in North America – a 7,236-acre monument stretching 17 miles along Albuquerque’s West Mesa, jointly managed by the National Park Service and City of Albuquerque, preserving carvings made by Native Americans and early Spanish settlers. Old Town Albuquerque’s San Felipe de Neri Church (NRHP-listed 1969) is one of the oldest buildings in the city. The county hosts the internationally famous Albuquerque International Balloon Fiesta.
Veterans Services
VETERANS SERVICES
Office: Bernalillo County/City of Albuquerque Veterans Services – confirm current contact via bernco.gov.
Federal: Albuquerque VA Medical Center – 2100 Ridgecrest Dr SE, Albuquerque, NM 87108; genuinely NRHP-listed (1983) as a historic district.
Libraries
LIBRARIES
Albuquerque Bernalillo County Library System – 18 branches plus the downtown Main Library; over 1.2 million items in the collection; established May 1, 1901. The Old Main Library (built 1925, Pueblo Revival architecture) now houses the Special Collections branch. Website: abqlibrary.org.
Parks & Recreation
PARKS & RECREATION
Key Assets: Petroglyph National Monument, the Sandia Peak Tramway and Sandia Mountains, ABQ BioPark (zoo, aquarium, botanical garden, Tingley Beach), the Indian Pueblo Cultural Center, Balloon Fiesta Park, and Old Town Albuquerque are the county’s premier attractions.
Notes: The genuine, internationally recognized Balloon Fiesta and Petroglyph National Monument are distinctive local facts.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Bernalillo County Assessor – Damian R. Lara, confirm current contact via bernco.gov.
Animal Services
ANIMAL SERVICES
Bernalillo County Animal Care Services – confirm current address/phone via bernco.gov/animal-care-services; also operates an Animal Cruelty Task Force in partnership with the Sheriff’s Office, 400 Roma Ave NW, Albuquerque, NM 87102, (505) 468-7100.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Bernalillo County Public Works/Solid Waste – confirm current contact via bernco.gov.
NOTES: Bernalillo County is the first county in the New Mexico v3 A+ sourced redo (batch 1 of the alphabetical build, starting fresh – a prior “New Mexico v2” folder used the old templated/filler standard and should not be treated as authoritative). New Mexico has 33 counties total. The genuine Petroglyph National Monument and Balloon Fiesta are distinctive, nationally significant local facts. All contact information above was sourced via web search as of early August 2026 and should be reconfirmed directly with the relevant office before a visit, deadline-sensitive filing, or emergency-adjacent decision.
About Bernalillo County
Bernalillo County is New Mexico’s largest county by population – containing Albuquerque, the state’s largest city and commercial hub, along with Rio Rancho (technically in neighboring Sandoval County but practically part of the same metro), and the municipalities of Tijeras, Carnuel, and Corrales. Albuquerque sits at roughly 5,300 feet elevation on a broad plateau above the Rio Grande, beneath the dramatic Sandia Mountains to the east. The city’s name – “Albuquerque” – has been spelled many ways and the extra “r” in the original Spanish was long ago dropped from common usage. The county takes its name from the Duchy of Bernalillo, a Spanish colonial land grant.
The Albuquerque metro economy is anchored by Kirtland Air Force Base (home to Air Force Nuclear Weapons Center and Sandia National Laboratories), the University of New Mexico (the state’s flagship university), state government employment, and a growing technology sector in aerospace, defense, and semiconductor manufacturing – Intel operates a major fab in Rio Rancho. The county has a highly diverse population with significant Hispanic (approximately 50% of residents), Native American, and Anglo communities. The Albuquerque metro includes 19 sovereign tribal nations in the greater region, several of which operate major gaming facilities in Bernalillo County.
County government is a five-member Board of County Commissioners with an elected County Manager, and separately elected offices for the County Assessor, County Clerk, Probate Judge, Sheriff, and Treasurer.
All Services
Browse every category and topic available for this county.
New Mexico’s property tax system has two distinctive features that significantly reduce the tax burden compared to states that tax full market value.
One-third valuation rule: The Bernalillo County Assessor (415 Silver Ave SW, Albuquerque, 505-222-3700) values property at market value, but only one-third of that value is taxable (before exemptions). A home with a market value of $300,000 has a taxable value of $100,000 for millage rate purposes. For 2025, Bernalillo County’s composite millage rate is approximately 42.258 mills – meaning the effective rate on market value runs approximately 1.2–1.5% depending on location and exemptions.
3% annual cap: Annual increases in the taxable assessed value of residential property are capped at 3% as long as ownership doesn’t change. This prevents runaway assessment increases in appreciating markets. The cap resets upon sale to the new market value.
The protest process – 30-day window:
The County Assessor mails Notices of Value by April 1 each year. Property owners have 30 days from the mailing date to file a written protest. File with the Bernalillo County Assessor’s office (not the Treasurer). A Bernalillo County appraiser contacts you to schedule an informal hearing to discuss the valuation. If unresolved:
File a formal protest with the Bernalillo County Valuation Protests Board – an independent citizen body. The Board schedules a formal hearing. If unsatisfied with the Board’s decision, appeal to New Mexico District Court within the statutory deadline.
Missing the 30-day window: If you miss the protest deadline, your only recourse is to file a claim for refund in District Court no later than January 10 of the following year (7-38-40 NMSA).
Exemptions:
– Head of Family Exemption: $4,000 subtracted from taxable value – effectively a $4,000 reduction in assessed value for the head of a household who owns and occupies the property. Apply by the last day of the 30-day protest period for new applicants.
– Veterans Exemption: Additional $4,000 reduction from taxable value for qualifying veterans.
– Low-Income Elderly/Disabled: Additional relief for qualifying seniors and disabled residents – contact the Assessor for current income thresholds.
– Senior Valuation Freeze: New Mexico offers a valuation freeze for qualifying seniors 65 or older that locks assessed value at the current level, preventing future increases. Contact the Assessor.
Tax bills are mailed by the Bernalillo County Treasurer (PO Box 669, Albuquerque, 505-222-3431) by November 1. First half due November 10; second half due April 10 of the following year. Late payments incur 1% per month penalty plus interest.
New Mexico has no state estate tax and no state inheritance tax.
OWNWELL CTA: Bernalillo County’s 30-day protest window opens April 1 with Notice of Value mailing. The one-third valuation rule keeps absolute bills relatively low, but the 3% cap means long-held properties may be well below market – check your notice carefully when ownership changes. Ownwell manages the protest with no upfront cost.
Recommended
Bernalillo County's 30-day protest window opens April 1 with Notice of Value mailing. The one-third valuation rule keeps absolute bills relatively low, but the 3% cap means long-held properties may be well below market - check your notice carefully when ownership changes. Ownwell manages the protest with no upfront cost.
Courts & Legal
Courts & Legal
The Bernalillo County Second Judicial District Court at 400 Lomas Blvd NW, Albuquerque (505-841-7425) handles all civil, criminal, and family matters for Bernalillo County. It is one of the busiest district courts in New Mexico. The Bernalillo County Probate Court – handled through both the elected Probate Judge (Cristy J. Carbon-Gaul) for informal proceedings and the Second Judicial District Court for formal probate – serves the county’s estate and guardianship needs. The Bernalillo County Clerk (Michelle S. Kavanaugh) at One Civic Plaza NW, Albuquerque (505-468-1200) maintains all land records and vital records.
New Mexico probate is governed by the New Mexico Uniform Probate Code (NMSA Chapter 45). New Mexico has no state estate tax and no state inheritance tax – only federal estate tax applies. New Mexico recognizes Transfer on Death deeds for real property.
The Albuquerque International Balloon Fiesta: Held annually each October in Albuquerque, the Balloon Fiesta is the largest hot air balloon festival in the world, drawing approximately 900 balloons and 800,000+ visitors. It’s the single largest annual event in New Mexico and a significant driver of short-term tourism revenue across the county – with implications for short-term rental regulations and property use that some homeowners navigate.
Native American tribal land considerations: Significant portions of land near and within the greater Bernalillo County region are held in tribal trust or restricted status for the 19 sovereign nations in the area. Tribal trust land is generally not subject to county property tax. Transactions involving land near Pueblo reservations can have unique title and jurisdiction questions – always consult with a real estate attorney experienced in New Mexico and tribal land issues.
Senior Services: The Bernalillo County Department of Senior Affairs (505-468-7500) operates senior centers throughout the county, coordinates home-delivered meals, transportation, SHINE Medicare counseling, caregiver support, and connections to New Mexico Medicaid long-term care programs. New Mexico’s Mi Via Medicaid waiver and CoLTS (Coordinated Long-Term Services) programs provide home and community-based care for qualifying seniors.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
COUNTY CLERK
One Civic Plaza NW, Albuquerque, NM 87102
(505) 468-1290
COUNTY CLERK — ELECTIONS
One Civic Plaza NW, Albuquerque, NM 87102
(505) 468-1290
Genealogy
PRIMARY STATEWIDE RESEARCH CENTERS (same across all New Mexico counties)
New Mexico State Records Center and Archives, 1205 Camino Carlos Rey, Santa Fe, NM 87507.
New Mexico Genealogical Society, P.O. Box 8283, Albuquerque, NM 87198.
County-level record sources
Bernalillo County Probate Court, Albuquerque (probate case files – see Probate section above). Bernalillo County Clerk holds marriage records from 1885, probate records from 1895, and land records from 1888.
Center for Southwest Research, University of New Mexico Libraries (Zimmerman Library), Albuquerque – significant special collections.
Albuquerque Bernalillo County (ABC) Library Genealogy Center, Special Collections.
Local societies
New Mexico Genealogical Society, confirmed, headquartered in Albuquerque (P.O. Box 8283).
Hispanic Genealogical Research Center (HGRC), Albuquerque.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Bernalillo County is one of New Mexico’s original counties, created in 1852, and is now New Mexico’s most populous county, seated in Albuquerque. Contested and formal matters go to the Second Judicial District Court.
Step 1: figure out which path applies
New Mexico adopted the Uniform Probate Code. New Mexico has a dual court system: the county PROBATE COURT handles informal, uncontested probate matters with minimal court involvement, and has concurrent jurisdiction with the DISTRICT COURT over informal proceedings. The District Court alone handles formal probate – contested cases, determinations of heirship, and trust matters.
Small Estate Affidavit / Affidavit of Successor in Interest (N.M. Stat. § 45-3-1201) – available when the value of the entire estate (after liens and encumbrances) does not exceed $50,000 and does NOT include any real property. At least 30 days must have passed since death. This skips probate court entirely – the affidavit is presented directly to banks, the DMV, or other institutions holding the property.
Homestead Transfer Affidavit for Surviving Spouse (N.M. Stat. § 45-3-1205) – available 6 months after death, when the surviving spouse and decedent owned a homestead as community property valued at $500,000 or less (for property tax purposes). The affidavit is recorded with the county clerk and can avoid formal probate for the residence, but only if funeral expenses, expenses of last illness, and all unsecured debts have already been paid.
Informal Probate – the most common path for uncontested estates, filed with either the Probate Court or the District Court in the county where the decedent was domiciled. No hearing required.
Formal Probate – required for contested cases, disputes over heirship, or trust matters. Only the District Court can hear these.
Step 2: filing for informal or formal probate
File a petition with the Probate Court or District Court in the county where the decedent was domiciled. A probate may be started up to 3 years after death.
The court appoints the personal representative and issues Letters Testamentary or Letters of Administration.
The personal representative notifies creditors; New Mexico’s creditor claim period is 2 months from notice to creditors – one of the shortest in the country.
The personal representative inventories the estate’s assets, pays debts and expenses, and distributes the remaining assets according to the will or New Mexico’s intestacy statute.
The estate is closed, typically within 6 to 12 months for straightforward, uncontested cases.
What it costs
The filing fee for probate in Probate Court is generally around $30 – notably lower than in most states. District Court filing fees run higher, commonly $100–$232 depending on the county and complexity.
New Mexico does not set a fixed statutory percentage for personal representative compensation; courts typically look to a reasonable guideline of about 2–4% of the estate’s value.
New Mexico has no state estate tax and no state inheritance tax. Only the federal estate tax could apply, and only to very large estates (a gross estate and prior taxable gifts exceeding roughly $15 million as of 2026).
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
400 Roma Ave. NW, Albuquerque, NM 87102
(505) 798-7000
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
COUNTY CLERK — ELECTIONS
One Civic Plaza NW, Albuquerque, NM 87102
(505) 468-1290
ELECTIONS
One Civic Plaza NW, Albuquerque, NM 87102
(505) 468-1290
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
NM HSD — Bernalillo
(505) 841-2900
University of New Mexico Hospital
hsc.unm.edu (Albuquerque — Level I Trauma; NM's only academic medical center; premier hospital in New Mexico)
Office: Bernalillo County Public Health / NM Human Services Department (Bernalillo) – confirm current contact via bernco.gov or hsd.state.nm.us.
Hospital: University of New Mexico Hospital – Albuquerque; the county’s major trauma and teaching hospital.
Editorial independence: CountyOffices maintains strict editorial independence from our affiliate partners. Our content is researched from official government sources. Affiliate relationships do not influence our recommendations or the information we publish.
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