plus govt fees
Personal/Business Documents: 4-14 business days*

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plus govt fees
Personal/Business Documents: 1-3 business days*

Order Now

Same day
plus govt fees
Personal/Business Documents: Same Day*

Order Now

Over the past 5 years, I have worked with a good number of companies that provide apostille and notary services. One Source Process is clearly in a ‘class of their own’. They are very responsive, and timely with respect to providing the documents-and truly a pleasure to work with! There service is absolutely the very best that I have ever received! I can highly recommend them with confidence-and without reservation!” Don Pelletier, Broker & Real Estate Consultant ‒ The Don Pelletier Group, Inc

California Apostille Service

When presenting your paperwork to another country, you need a form of authentication that verifies the attached signatures and seals. There are two types of validation:

  • Have your document apostilled
  • Have your document legalized by the Embassy/Consulate

The Hague Convention of 1961 established a uniform process of confirming the authenticity of documents. Countries belonging to this convention accept papers that are apostilled, while non-member countries only accept legalized documents that are processed through the Embassy or Consulate. Don’t worry if you are unsure which verification your destination country requires, we are able to apostille a document properly and return it quickly to you.

We Specialize in California Apostille Service

Let One Source Process apostille your federal or state documents including: birth certificate, marriage certificate, diploma, transcripts, FBI report, power of attorney, & much more!

Obtaining an apostille can be tedious and confusing since you must work with the correct state and federal offices, and maybe even the embassy or consulate. Missing one step will cause a delay, or reject your request altogether.

But when working with us, the apostilization of documents is easy; to begin, simply fill out our Order Form here. You will then send us your original documents (or a certified copy). That’s it; we will take it from here. We will work with the correct California state offices, federal office of authentications, and if needed, the Embassy or Consulate.

If you require an expedited or even same day California apostille for documents, then you’ve come to the right place. Our staff is available 7 days a week and ready to assist you with any type of expedited apostille.

We also provide translation services for destination countries that require it.

Enjoy Our Guaranteed Customer Service

Our California apostille process is simple, stress-free, and will exceed your expectations; we guarantee it. We are dedicated to 100% customer satisfaction and will handle your documents with great care to ensure their safe return to you. Please contact us anytime from Monday-Friday 9am – 6pm EST and Saturday – Sunday 9am – 4pm EST at our toll-free number 1-800-668-5448 or email us at

We look forward to working with you.

1. Apply online

Send us your request online and receive a quote from a specialist the same day. We will also review a scan of your documents for any errors and let you know ASAP if additional steps are required. Apply here

2. Send us your documents

No need to make an appointment or go to a physical location. Just mail us your documents through a secure tracked shipping service (FedEx, DHL, or UPS). In some cases we may not even need the physical copy!

3. Receive your documents

Once completed, your Apostilled documents will be mailed to you via FedEx or DHL and will arrive at your doorstep. Ask about our shipping options! Whether in the US or Worldwide, we’ll get them to you wherever you may be.

Documents We Apostille


  • Marriage certificates
  • Death certificates
  • Birth certificates
  • Divorce decrees
  • Single status affidavits
  • Power of attorney
  • Wills
  • Car titles
  • Adoption dossier
  • FBI records
  • Criminal history reports
  • Any notarized document


  • Certificates of good standing
  • Certificates of incorporation
  • Certificates of origin
  • Power of attorney
  • Hiring documents
  • Company invoices
  • Other business documents


  • High school
  • GED
  • College diplomas
  • Report cards
  • Other various school records

Frequently Asked Questions About Apostilization of Documents in California

Q: Does an apostille in California certify the authenticity of the information in the document?

A: When a document is apostilled in California, the office of authentications certifies that the person who signed the document on behalf of the state had the authority to do so, and certifies the authenticity of the signature. The information contained in the document is not verified or confirmed during the apostille process.

Q: Can I obtain a California apostille on a document issued in another state?

A: No. The state of California will only apostille documents issued in California, issued by an official department of the state — signed by a California notary, state Registrar or probate judge. Documents issued by another state must be apostilled in the issuing state.

Similarly, federal documents issued in California can be apostilled, but the apostille must be obtained through the U.S. State Department rather than through California. One Source Process can help you obtain apostilles for documents issued across the U.S., as well as documents issued by the federal government.

Q: How do I obtain an original or certified copy if I need to apostille a document in California?

A: If you do not have an original or certified copy of the document you need apostilled, you can obtain it by contacting the Town Clerk or the Vital Records Unit of the California Department of Health. 

Q: Will my California-apostilled documents be accepted everywhere?

A: Your California-apostilled document should be accepted in any of the countries in the Hague Convention. If you require a document authenticated for a non-Hague Convention country, you will need an embassy legalization/certification rather than an apostille. One Source Process can help you determine what type of authentication you need and help you obtain the necessary apostille or certification.

Q: I need my apostilled document fast. Does One Source Process offer expedited apostille services for California documents?

A: Yes! We understand that sometimes, people need their apostilled documents quickly. We offer rush turnaround services (typically within one to three business days) or same-day services.

Testimonials from real clients

We have used a few different process servers and no one has provided the level of customer service that One Source Process has. They are very reliable and they communicate every step of the way. Alex and Brandon have been a huge help and they always take their time to understand our needs. We look forward to working with One Source Process for a long time

Holly Webb

– Schoppl Law, P.A.

Professional and efficient – Having not been through the Apostille Service previously, we were guided and taught what we were doing by extremely professional and courteous individuals. We couldn’t be more pleased at the efficiency and the speed at which they were able to get the job done. The final product was accepted by the bank and the beneficiaries of the estate received their funds, everyone was happy. Thank you, One Source Process, Inc.

Bryan Cosgrove

– The Law Offices Of George Castrataro, P.A.

One Source Process took good care of me! Their personal care and attention to detail is hard to find! I was dealing with a deadline for a visa and in dire need for help understanding the process. They made everything so easy and I met my visa deadline no problem. I am so appreciative and I recommend them to you!

Rebecca Young

– Teachbeyond

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