Call Us at (800) 840-7858 for Your Free 15-Minute Initial Phone Consultation*

Oster Legal—A Boutique Divorce Law Firm

The Law Office of Sean B. Oster, P.C. focuses on Divorce cases. Mr. Oster formally worked Of Counsel to a Divorce & Family law firm where he handled contested and uncontested divorces.


Now Mr. Oster would like to bring his dedication and experience to your Divorce case.


If you are ready to start the Divorce process, please contact us at 1-800-840-7858.


Contact Us for Your Free 15-Minute Initial Phone Consultation


I strive to make your legal experience as easy and stress-free as possible.

Step 1

Call my office to schedule your free initial consultation or submit your legal matter using our online form below. This will be the first step in gathering information to build a solid strategy.

Step 2

Once my services have been formally retained—I will begin the process of curating all required legal documents.

Step 3

I will keep you updated and informed of your legal paperwork and court filings until case completion.


A Divorce legally dissolves a marriage and releases both parties from the responsibilities of their union. Ensure that you have a trusted attorney on your side to protect your legal rights, represent you in court, and negotiate your custody, visitation, division of property, etc.
No-Fault Divorce

No-Fault is a very common ground for Divorce. It’s premise is that the marriage has Irretrievably Broken Down for at least 6 months. If this is the case, we can help you move forward with a No-Fault Divorce proceeding in order to legally dissolve your marriage.

If you are ready to start the Divorce process, please contact us at 1-800-840-7858 or by using the Contact form.

Uncontested Divorce

An Uncontested Divorce occurs when both parties agree to all the terms of the Divorce. All outstanding legal issues have been resolved between the parties.

If you are ready to start the Divorce process, please contact us at 1-800-840-7858 or by using the Contact form.

Publication Divorce

Publication Divorce is for when you are having trouble locating your spouse in order to proceed with the Divorce. Contact us if you are having trouble locating your spouse. If your circumstances permit, we can help you with a Publication Divorce.

No Children and No Property

No Children and No Property

Children with No Property

Children with No Property

Property with No Children

Property with No Children

Children and Property

Children and Property

Free Consultation


Professional Service


Prompt Service





“We were very satisfied with Sean B. Oster’s assistance. Mr. Oster displayed a very professional and caring manner. He was at all times courteous and very open to all our questions. We would highly recommend him to others interested in his services.”

A.M. & R.M.

“Sean Oster was an excellent attorney in executing a new will for me. He made the process very easy, and was always available via phone and email to answer questions. Even after the will was signed, he was still available to me for follow up questions. His style gave me a lot of confidence and the process was short and sweet! Thank you Sean!”


“Mr. Oster was proficient and helpful in all aspects of my project to which he was assigned. He was always courteous and knowledgeable about points of the law with which I was not familiar. This young attorney should go far in his chosen profession.”


“I think everyone gets nervous at the prospect of making a Will. And it is essential to have a knowledgeable and compassionate attorney to help with all the questions and decisions that arise. Thankfully, I found Sean B. Oster. He was easy to speak with, generous with his time, well-informed and professional. I recommend him highly.”



Attorney Sean B. Oster, Esq., M.B.A.

There are many times in life when the need for legal representation will arise, and it is our goal to make such times as stress-free as possible. We are passionate about the law, and here to help you navigate the complicated legal process.

As a boutique divorce law firm, we ensure that each of our clients are of equal priority. Our goal is always to identify the best solutions for your individual needs. When you are in need of help with your Divorce—we will be by your side from start-to-finish.

Call us today at (800) 840-7858 for a free 15-minute initial phone consultation.*


Worked Of Counsel for a Divorce & Family law firm


M.B.A. in Finance


Decision Editor for three New York Law Journal books: New York Real Property Law, New York Civil Practice Law and Rules, and New York Estates and Surrogate’s Court law

The Law Office of Sean B. Oster, P.C.

276 5th Avenue
Suite 704-3018
New York, N.Y. 10001
(800) 840-7858

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Disclaimer: The information on this website is for general informational purposes only. Nothing on this website, or emails, or other communications should be taken or construed as legal advice for any individual case, situation, or any subject manner. The information on this website is not intended to create, and receipt or viewing of this information does not constitute or create, an attorney-client relationship. Contacting Mr. Oster solely via phone, contact form and/or email, does not by itself constitute an attorney-client relationship.

Use of our online form does not constitute an attorney-client relationship. In order for you to form an attorney-client relationship with our Law Office both sides would have to sign and execute a Retainer Agreement.

* The free 15-minute initial phone consultation is for the attorney to determine if he can take your case and to provide you with a cost of their attorney’s fees. The lawyer will not advise you of what you can do in your case without a contract. The attorney does not represent you until we sign a contract with you.

ATTORNEY ADVERTISING. Prior Results do not guarantee a similar outcome.