Fast, Reliable Mobile Notary Services

in East Bay & Contra Costa County

Same-Day Mobile Notary, Apostille Facilitation & Certified Translations

Collage banner showing Secretary of State building, same-day notarizing and apostille services, priority document delivery, and consular services for estate plans, translations, and loan signings

Looking for a trusted mobile notary?

Mobile Notary Services Throughout the East Bay

We provide reliable mobile notary services at your home, office, hospital, or preferred location throughout Contra Costa County and the East Bay, including Antioch, Brentwood, Oakley, Pittsburg, Bay Point, Concord, and Discovery Bay.

Apostille Facilitation Services Nationwide

We provide apostille and document authentication services across all 50 U.S. states and Washington, D.C.

Call us 

  for details. 

Our Core Services

Notary, Apostille, Translation & Courier

We come to your location

Notary

Same-Day Services without extra “emergency” fees.

California Jurat and Acknowledgment notary certificate forms for general notary service reservations

Fast & Dependable

Apostille

International document authentication—made easy.

Federal apostille certificate under the 1961 Hague Convention, issued in Washington D.C. for U.S. federal documents

Accurate & Reliable

Translation

Professional translations in 150+ languages.

Notarized translation service documents in Spanish, Vietnamese, Portuguese, Hebrew, and other languages

Secure

Courier

Fast, secure courier delivery for your notarized documents.

Locked leather document courier case with an envelope, used for secure delivery of notarized and apostilled documents

Our Credentials You Can Trust

Certified Notary Professionals

Woelsung (Sue) Yi, PhD, co-owner of East Bay Notary Express

Woelsung (Sue) Yi, PhD

California Notary Public

Jongseung (Joe) Park, notary and founder of East Bay Notary Express

Jongseung (Joe) Park, PhD

California Notary Public

Certified NNA Notary Signing Agent badge, 2026

E&O Insured, Background Screened & Certified NSAs

Certified to handle loan signings

National Notary Association (NNA) member badge, 2026

National Notary Association

Members of NNA

Badge symbolizing 25+ years of engineering and science experience

25+ Years of Professional Experience

Decades of experience in science & engineering

What Our Customers Say

Real reviews from customers we've served

Client Reviews

Frequently Asked Questions

Answers to common questions

Yes. We provide same-day mobile notary services with no additional fee, subject to availability.

No. Unlike many services that charge a “convenience” or “emergency” fee for last-minute requests, we do not charge extra for same-day notary appointments. If our schedule allows, we are happy to assist you immediately at our standard mobile rate.

A Mobile Notary or a traveling notary is a commissioned Notary Public who travels to your location rather than requiring you to visit an office. Whether you are at a home in Brentwood, a hospital in Antioch, or a coffee shop in Oakley, we bring our notary services to you.

We provide mobile notary services to Antioch, Bay Point, Brentwood, Concord, Oakley, Pittsburg, Knightsen, and Discovery Bay. If you are slightly outside these areas, feel free to contact us—we often make exceptions for complex assignments.

Yes. We are insured, NNA certified and background screened Signing Agents and members of the National Notary Association.

An apostille is a special certificate that authenticates your document for use in other countries. You need it when using official documents, such as birth certificates, diplomas, or powers of attorney, abroad. Instead of trying to navigate the confusing process on your own, let us handle it for you.

Yes. We handle apostille services for Hague countries and authentication services for non-Hague countries.

We physically drive and carry your documents to the Secretary of State’s office in Sacramento. This ensures your sensitive documents remain in our custody and are processed much faster than standard mail.

Yes. We handle embassy and consular authentication, managing the submission process to ensure your documents are properly authenticated for international use.

Yes. We provide professional certified and notarized translations suitable for domestic and international use.

Yes. We offer professional translation services alongside our notary and Apostille offerings. This is particularly helpful for clients handling international adoptions, foreign real estate transactions, or academic credentialing.

To perform a notarization, you will need:

    1. The document(s) completely filled out (but unsigned).
    2. A valid, government-issued photo ID (Driver’s License, Passport, etc.).
    3. All signers must be physically present and coherent.

Legal documents require a “zero-defect” mindset. Our 25+ year careers in biomedical research and engineering were built on the foundation of accuracy and data integrity.