Honolulu County Probate Court Records
Honolulu County probate court records are on file at the First Circuit Court in Kapolei. That is where every will, estate, guardianship, and trust matter for O'ahu gets opened. You can look up case info through the Hawaii State Judiciary site or visit the Ronald T.Y. Moon Judiciary Complex in person. The court keeps the full file for each probate case, and the clerk can make copies for you. Most probate court records in Honolulu County are open to the public, though some items stay sealed by law.
Honolulu County Overview
First Circuit Court for Honolulu County
The First Circuit Court serves all of Honolulu County. It sits in the Ronald T.Y. Moon Judiciary Complex at 4675 Kapolei Parkway, Kapolei, HI 96707. The main line is (808) 954-8400. This court handles the highest volume of probate cases in the state, because Honolulu County is the most populous county in Hawaii with nearly one million residents. The Circuit Courts page lists the court's full contact info and office hours.
The Probate Division at the First Circuit processes the full range of estate work. It takes petitions for probate of a will. It opens intestate estates when there is no will. It sets up guardianships for minors and for adults who cannot manage their own affairs. It handles conservatorships. It registers trusts and hears trust fights between trustees and beneficiaries. It also takes ancillary probate cases when an out-of-state decedent owned property on O'ahu.
Honolulu County probate court records are mostly public. You can walk into the clerk's office at the Kapolei complex and ask to read a file. Bring a photo ID. The clerk pulls the file and lets you look at it at the public counter. Some parts may be redacted, such as social security numbers and bank account numbers. Files with minors, medical detail, or sealed orders need a court order for full access.
Here is the Hawaii State Judiciary portal, which links out to the First Circuit. The Hawaii State Judiciary hosts its main site at courts.state.hi.us, the gateway to Honolulu County probate court records.

Use the site menu to reach the First Circuit page, court forms, and the self-help portal for O'ahu residents.
Honolulu County Government Records
The City and County of Honolulu maintains property, tax, and permit records that often tie into probate court records. The city portal links out to the Department of Planning and Permitting, the Real Property Assessment Division, and the Department of the Corporation Counsel. Estate administrators use these offices to pull deed info, tax rolls, and permit history for any property the decedent owned.
The Real Property Assessment Division tracks all O'ahu parcels. Executors and heirs can search by Tax Map Key or by owner name to find every property the estate holds. Property tax records show current assessments, past-due balances, and any liens. The records are public. The city also handles motor vehicle title transfers, which often come up when a decedent's car has to move to a beneficiary. The Honolulu site has the full list of departments and service counters.
Here is the City and County of Honolulu page. The City and County of Honolulu runs its main portal at honolulu.gov, a starting point for property and municipal records tied to Honolulu County probate court records.

From the home page, click through to Real Property Assessment or Planning and Permitting for property-related probate research.
Note: Honolulu County property records help confirm every parcel the estate holds, so always check the Tax Map Key before filing the inventory with the court.
Death Certificates for Honolulu County Probate
You cannot open a probate case without a certified death certificate. The main Vital Records Office sits at 1250 Punchbowl Street, Room 103, in Honolulu. Hours run from 7:45 a.m. to 2:30 p.m., Monday through Friday. The phone is (808) 586-4539. Metered parking costs about two dollars per hour. Walk-ins get served between scheduled visits, and same-day service is often available for simple orders.
This office processes the highest volume of death certificate requests in the state. Most Hawaii deaths happen at O'ahu hospitals, so the Punchbowl office is the main hub. You can also order online through the state's vital records portal for mail delivery. Certified copies are needed to file the probate petition, transfer title to real estate, close bank accounts, and claim insurance. Most estates need five to ten certified copies.
Here is the Vital Records page. The Department of Health Vital Records runs its site at health.hawaii.gov/vitalrecords, which issues the certified death certificates you file with Honolulu County probate court records.

Order online for mail delivery, or visit the Honolulu office for same-day walk-in service.
Business Filings and Estate Records
When a Honolulu County estate includes business interests, the personal representative has to track them down. The Department of Commerce and Consumer Affairs Business Registration Division keeps entity records for the whole state. The office is at the King Kalakaua Building, 335 Merchant Street, Room 201, Honolulu. You can call 1-844-808-3222 toll-free. Hours run 7:45 a.m. to 4:30 p.m. on weekdays.
You can search business entities by name, by officer, or by registration number on the DCCA Business Registration site. The lookup shows filing history, annual reports, and good-standing status. Executors use this tool to find every company the decedent owned, served as officer of, or held shares in. For certified copies of articles of incorporation, the office charges a per-document fee and can mail them after you order online. This matters when the estate has to prove ownership in court.
Here is the DCCA Business Registration page. The DCCA Business Registration Division is at cca.hawaii.gov/breg, a key source for Honolulu County probate court records involving business interests.

Search by entity name, officer name, or filing number to pull up Hawaii business records for an estate.
The Oahu RICO office also helps estate executors. RICO stands for the Regulated Industries Complaints Office. It tracks licensed professionals like real estate agents, contractors, and financial advisers. The Oahu office is at the Leiopapa a Kamehameha Building, 235 S. Beretania St., 9th Floor, Honolulu, HI 96813. You can verify a license before handing over estate work. You can also file a complaint if something goes wrong. The RICO site has forms and contact info.
Historical Honolulu County Probate Records
Older Honolulu County probate files end up at the Hawaii State Archives, which sits on the grounds of 'Iolani Palace in downtown Honolulu. The Archives holds court files from the Kingdom of Hawaii, the Republic, and the Territory. It has historical wills, estate inventories, and land conveyances for O'ahu properties going back to the 1800s. Genealogy researchers use these records to trace Native Hawaiian ancestry and to confirm heirs of older estates.
The Digital Archives project puts many files online in beta form. You can search by name, date, or document type at digitalarchives.hawaii.gov. For paper records that have not been scanned, you book an appointment with Archives staff and visit in person. The full site is at ags.hawaii.gov/archives.
Here is the Digital Archives portal. The Hawaii Digital Archives at digitalarchives.hawaii.gov hosts scanned Honolulu County probate court records from the Kingdom period forward.

Use the search tool to filter by decedent name, document type, or date range.
Legal Help for Honolulu County Probate
The Legal Aid Society of Hawaii helps low-income folks with probate matters. The Oahu line is (808) 536-4302. Phone intake runs Monday through Friday, 9 a.m. to 11:30 a.m. and 1 p.m. to 3:30 p.m. Walk-in intake is not offered, but clients with appointments can meet staff in person. Legal Aid takes cases on a means-tested basis and charges no fee to those who qualify.
For help finding the right resource, Legal Navigator Hawaii is a free online tool. You type in your issue in plain words and the system points you to the right place, whether that is a court form, a legal aid office, or a self-help page. The Judiciary's own self-help portal at courts.state.hi.us/self-help also has forms and guides tailored to O'ahu residents.
For appeals and case law research, the Intermediate Court of Appeals and the Supreme Court sites post opinions that shape how lower courts run probate cases. The Hawaii Revised Statutes on Justia cover the Uniform Probate Code in Chapter 531, the Trust Code in Chapter 532, and the digital assets act in Chapter 535. Reading the right chapter saves time before you call the court.
Neighboring counties with probate jurisdiction include Maui County for the Second Circuit and Hawaii County for the Third Circuit. If the decedent owned property on more than one island, ancillary probate may run in each county that holds real estate. The First Circuit clerk can tell you when an ancillary filing is needed.
Tip: Many Honolulu County probate court records can be pulled same-day at the Kapolei courthouse, so call ahead with the case number to save time at the counter.