Skip to content

Divorce and family lawyers for Long Island

Big enough to fight, small enough to care.

Serving Nassau, Suffolk and Queens since 2003

Matthew S. Seidner, Esq., founder and principal attorney

As featured in

Focused only on divorce and family law

The Law Offices of Seidner & Associates, PC has a staff of attorneys and paralegals who focus only on these two areas of law, with a combined roughly five decades worth of legal experience in our Garden City office.

We are big enough to have the capacity to handle the most complex legal matters yet small enough to have intimate relationships with all of our clients.

About the firm
A bright consultation room with a round oak table, a yellow legal pad, two glasses of water and navy armchairs by a tall window
Meet the team

Our practice areas

We handle a wide range of divorce and family law matters for clients across Long Island and Queens.

View all practice areas

Why clients choose us

The lawyer and client relationship is just that: a relationship. These are the commitments we make to every client.

  • At your side, every step of the way

    We are with you at every twist and turn, providing guidance and support, so you never feel lost in Long Island’s legal system.

  • Dedication to fight for your rights

    When we take on your case, your fight becomes our fight. We stay determined to protect your rights and leave no stone unturned.

  • Solutions tailored to your needs

    We know every contested or uncontested divorce case is unique. We craft personalized legal strategies, designed to fit your specific needs and circumstances.

  • A results-driven approach

    Whether it is a high-conflict divorce, high net worth asset division, child support, spousal support, or another family law matter, our focus is always on the finish line.

A father kneeling on a tree-lined sidewalk to tie his sneaker while his laughing son hangs on his back

Can't afford a lawyer? You may not have to pay your own fees.

If your spouse has more money than you do, a New York court can order them to pay toward your attorney's fees while the case is pending. The law presumes the less-monied spouse is entitled to that help, so call us for an evaluation even if you think you can't afford representation.

Attorney advertising. Outcomes depend on the facts of each case.

Matthew S. Seidner, Esq., Founder & Principal Attorney

Matthew S. Seidner, Esq.

Founder & Principal Attorney

Matthew founded the firm in 2003. Clients describe a lawyer who explains every option, stays reachable, and is as ready to negotiate as he is to go to trial.

  • Adjunct Professor of Law at Hofstra
  • Nassau County Bar Association Matrimonial Law Committee
  • Nassau County Grievance Committee
  • Published in the ABA's Law Practice Magazine
  • Formerly at Quinn Emanuel and Fitzpatrick Cella

Professional organizations: New York State Bar Association, Nassau County Bar Association, American Bar Association

Read Matthew's full bio

Results for our clients

Real cases from the firm's own case notes, and the moment each one turned.

Relocation2013

At the courthouse door, the father settled.

Laid off, living with her parents and owed thousands in child support, our client asked to move to Florida with her three children. The father fought it for months. As Mr. Seidner was about to give his opening statement, the father agreed to settle, and the talks ran late into the night.

The outcome

She now lives in Florida, employed and engaged, and her children are flourishing.

Read the case note: At the courthouse door, the father settled.

Prior results do not guarantee a similar outcome.

See all results

What our clients say

Reviews from people we've represented, in their own words.

Read all client reviews

Prior results do not guarantee a similar outcome.

Review 1 of 26

Throughout the whole process I felt confident that I choose the right attorney. Matthew S. Seidner’s professionalism and expertise were of invaluable help and support to me during my divorce process. My intention was to pursue an amicable divorce and Matthew was clear in his respect and support of that intent. During the entire process, his office staff was welcoming and responsive to my calls and questions in a positive and supportive way. When my emotions were running high, they brought a calm and measured approach that made me feel supported and understood. Words cannot express the gratitude I have for making my divorce process as stress free as possible. What mattered the most to me is that Matthew understood the need for my family to come out of this divorce with the least amount of damage possible for the sake of my children, with that being said I would not hesitate to refer a client to Matthew S. Seidner.

Rich H.Client

Clear answers before you decide anything

Short answers from our articles. Every family is different, so the free consultation is where we look at yours.

Browse all articles

Each case is different and thus cost is extremely difficult to estimate. In general, the number and age of children involved, a couple’s financial and employment situation, the more assets a couple might have, and the length of the marriage can all have an impact on the cost of a divorce.

When couples are able to amicably decide potentially complicated issues like child custody, visitation, support for children and/or spouses, property division, etc., a case will demand less billable hours than one in which a judge is forced to decide the parties’ fate.

Read the full article: How much will divorce cost?

Couples may agree on matters like child custody and support, visitation and spousal maintenance. For these couples, uncontested divorce is the best route.

In New York, an uncontested divorce requires the filing of an “Uncontested Divorce Packet.” Our law firm can help you avoid costly delays or problems with filing by completing the necessary documents for you.

Read the full article: What is uncontested divorce?

Both the custodial or non-custodial parent can ask for a modification depending on the circumstances of either party. Modification can occur due to one of the following factors:

Read the full article: Basics of child support modification in New York

In some instances, one party might seek to reduce their financial obligation by artificially reducing their earnings. When this occurs, a judge can impute income. Imputing income means that the judge assigns a different income amount than what they report they are currently earning based on their earning capacity.

Read the full article: What is imputing income?

In New York, the court is supposed to ignore the respective gender of each parent and focus instead on the best interest of the child when determining custody, support, visitation, etc. A court may find that it is in the child’s best interests to grant custody to the father.

Read the full article: What are father’s rights?

In order to obtain rights, there must have been an existing relationship in place. The bottom line comes down to whether visitation is harmful or beneficial to a child. Courts will also consider the best interest of the children.

Read the full article: Grandparents’ rights in Queens, New York

You are not another file on a shelf.

Talk to us. The first consultation is free.

Tell us a little about your situation and we'll be in touch the way you choose. We treat every inquiry with discretion.

If you are in immediate danger, call 911.

The National Domestic Violence Hotline is free, confidential and open 24/7. 1-800-799-7233 or text START to 88788.

Leave this site quickly

A first name or nickname is fine.

How should we reach you?

Share as much or as little as you like.

Submitting this form does not create an attorney-client relationship.

Office
The Garden City Center Building
100 Quentin Roosevelt Blvd., Suite 401
Garden City, NY 11530Get directions to The Garden City Center Building (opens Google Maps in a new tab)
Fax
(516) 345-9902