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Professional Regulation

Certificate of Authorization

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When to Submit a Certificate of Authorization Application (COA)

The classification of the business providing the Architectural services (e.g. Sole Proprietorship, Partnership etc.) determines whether it is required to have a Delaware Certificate of Authorization (COA) registration or not.

A COA is required if the business is a Partnership, “S” Corporation, “C” Corporation, Limited Liability Company, or Limited Liability Partnership.

A COA is not required if the business is a Sole Proprietors hip or a Sole Member Limited Liability Company. However, the owner must submit a statement certifying that the business is a Sole Proprietorship or its equivalent.


Information on How to Apply for a License in DELPROS

All applications are submitted through our online system, DELPROS.

  • Click on the titles below in each section to expand the information.

In order to apply for a license or submit a service request, you must first have a DELPROS user account. To LOG IN or CREATE a DELPROS (Delaware Professional Regulation Online Services) user account:

  1. Go to: https://delpros.delaware.gov/OH_HomePage.
  2. Click GO on the Apply/Manage a License and Service Requests tile.
  3. If you do not have a DELPROS user account, click the REGISTER button on the left side of page for NEW USERS.
  4. If you already have a DELPROS user account, enter your email address and password on the right side for EXISTING USERS and click the LOGIN button.

DELPROS allows you to save your incomplete application and return to it later to finish the process. You only have six (6) months to submit your application once you begin.

  • If you do not submit your application within six months of starting it, you will be required to restart the entire online application again.

You may check the status of your application online throughout the entire application process by using the “View Application Status” feature in DELPROS on your e-License dashboard.

  1. Know the requirements for the license you are pursuing.
  2. Request and gather all documents required to upload on the Attachments page. All information and forms are located on your profession’s webpages.

On the ATTACHMENTS page of your application, you may be instructed to:

  • either “attach” or “upload” the required document(s) directly to your application. This means you will find the document(s) saved on your computer or device and upload it to your application.
  • click “acknowledge.” This means you will either have to mail the documents yourself or request the “third-party” mail the document(s) directly to the Board office.
    • Examples of “third-party forms” are transcripts from schools, employment verifications from a supervisor, and license verifications from another state.
  • Forms requiring a supervisor signature, seal, or notary may have to be MAILED to the Board office directly UNLESS the document specifically indicates to UPLOAD the document.

The requirements for this license type are provided in the following section(s).

In addition to submitting the application and fee in DELPROS, you must submit:

  • A copy of the State of Delaware business license issued by the Division of Revenue or the Division of Corporations.

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