Family law matters don’t just involve paperwork and legal procedure—they involve your future, your children, your home, and your emotional well-being. At The Mandel Law Firm, we understand that when you come to us, you’re often going through one of the most difficult transitions of your life. Whether you’re facing a divorce, custody dispute, or complex financial issue, our mission is to give you the clarity, protection, and results you need to move forward with confidence.

Located in the heart of New York City, we proudly serve individuals and families in Park Slope, one of Brooklyn’s most vibrant, community-focused neighborhoods. Known for its tree-lined streets, historic brownstones, and strong family values, Park Slope is a place where people invest in their families, their homes, and their futures. When legal issues threaten any of those, you deserve legal representation that is not only strategic and aggressive when necessary, but also deeply human.

Comprehensive Legal Guidance for Every Family Dynamic

No two families are alike. That’s why our firm does not apply a cookie-cutter approach to legal issues. Every case we take begins with listening. We get to know your situation, your concerns, and your goals. Then, we create a customized strategy that aligns with your needs—whether that means protecting your parenting time, preserving your financial security, or navigating an emotionally charged conflict with care and precision.

Our practice covers the full range of divorce and family law services, including high-conflict and high-net-worth divorces, amicable uncontested cases, and everything in between. We handle cases involving complex property division, business ownership, investment portfolios, and inheritance, especially relevant in a neighborhood like Park Slope, where financial and real estate interests can be substantial.

Parenting disputes are among the most emotionally difficult family law issues. We guide clients through custody arrangements, visitation schedules, relocation disputes, and support agreements. In every case, we advocate for outcomes that serve your child’s best interests while preserving and strengthening your role as a parent.

We also represent unmarried parents in paternity and custody cases, assist grandparents seeking visitation rights, and counsel LGBTQ+ clients navigating divorce and family formation challenges. For couples looking to protect their assets and plan proactively, we offer experienced guidance in drafting and enforcing prenuptial and postnuptial agreements.

Post-divorce representation is a major part of our practice. Even after a judgment is issued, life changes—and we’re here to help you adjust. Whether you need to modify a custody arrangement, enforce a support order, or defend against an ex-spouse’s claims, we remain committed to standing by your side as your trusted advocate.

Legal Experience That Makes a Difference

Led by founding attorney Steven J. Mandel, our firm brings over 40 years of experience to the table. Steven’s personal motto—“Your problems are now my problems”—is more than a catchphrase; it’s the philosophy that drives our entire team. We don’t back down when challenges arise, and we never forget that the outcome of your case will shape the next chapter of your life.

Clients throughout Park Slope turn to The Mandel Law Firm not only for our proven legal results, but for the way we treat them—with honesty, compassion, and fierce dedication. We explain your options clearly, return your calls promptly, and prepare thoroughly, whether your case ends in mediation or requires litigation in family court.

While we are skilled negotiators who aim to resolve matters amicably whenever possible, we are also seasoned trial lawyers. If your case demands a courtroom fight, we are more than ready to protect your interests with the full force of our experience and resources.

Family Law Services We Provide in Park Slope

At The Mandel Law Firm, we offer a comprehensive range of family law services designed to address the evolving and often sensitive needs of individuals and families throughout Park Slope. Our goal is to integrate each of these services into a cohesive, personalized strategy that reflects your priorities and long-term goals—because family law isn’t just about legal outcomes; it’s about real life and real people.

Divorce (Contested, Uncontested, High Net Worth)
Whether your divorce is cooperative or contentious, our team is prepared to guide you through the process with clarity and strength. In uncontested divorces, we work to streamline the paperwork and agreements so that your case can proceed smoothly and efficiently. In more complex or emotionally charged contested divorces, we protect your rights through strategic negotiation or assertive litigation. For those with substantial assets, business interests, or high-value real estate, our high net worth divorce services involve detailed asset tracing, valuation of property, and customized solutions to protect your financial future.

Child Custody, Visitation, and Parental Relocation
Few legal matters are more sensitive than those involving your children. We help parents develop custody and visitation agreements that support both the child’s best interests and your role as a parent. If one parent wishes to move—whether within New York or out of state—we assist with parental relocation requests or objections, working to ensure that your time with your children is preserved and respected under the law.

Child Support and Spousal Maintenance
Support issues can quickly become contentious. We assist clients in establishing fair and legally sound child support agreements that reflect both the financial needs of the child and the capabilities of the parents. For those going through divorce, we also represent individuals seeking or contesting spousal maintenance (also called alimony), helping ensure the outcome is both reasonable and sustainable, based on lifestyle, income, and length of marriage.

Paternity and Grandparent Visitation
Establishing paternity can be essential in determining legal rights for custody, visitation, and support. We help both mothers and fathers navigate the legal process to confirm paternity and assert their parental rights. In some families, grandparents play a vital role in a child’s upbringing. When necessary, we advocate for grandparent visitation rights, especially in cases where they’ve been involved in caregiving or where contact is in the child’s best interest.

Prenuptial and Postnuptial Agreements
Whether you’re about to get married or are already in a committed relationship, prenuptial and postnuptial agreements offer a way to define financial expectations, protect personal or family assets, and reduce future conflicts. We draft, review, and negotiate these agreements with sensitivity and skill—balancing legal clarity with respect for your relationship.

Pet Custody
For many, pets are family. During a separation or divorce, deciding who retains ownership or custody of a beloved animal can be emotionally challenging. Our firm takes pet custody seriously, helping you negotiate or litigate terms that reflect your bond and what’s best for your pet’s welfare.

Post-Divorce Modifications and Enforcement
Divorce doesn’t always mean the end of legal challenges. Life changes, and sometimes agreements need to change, too. Whether you’re seeking to modify custody, adjust child or spousal support, or enforce a court order your ex is violating, we can step in to ensure the legal system works in your favor. We assist with enforcement actions and contempt proceedings when obligations are not being met.

LGBTQ Divorce and Family Matters
We proudly serve the LGBTQ community, providing guidance in same-sex divorce, parenting rights, property division, and relationship dissolution matters that may involve complex legal recognition. We understand the unique legal and emotional challenges these cases can present and are committed to respectful, inclusive, and effective representation.

Annulments and Legal Separations
Not every relationship ends with a divorce. Some marriages may qualify for an annulment, which legally treats the union as if it never occurred. Others may benefit from a legal separation, offering a structured way to live apart while maintaining certain legal or financial ties. We help clients determine the best course of action based on their needs, beliefs, or specific circumstances.

Each of these services is approached not simply as a legal process, but as a deeply personal matter deserving of empathy and individualized attention.

Serving the Families of Park Slope with Integrity

Life in Park Slope is defined by a strong sense of community, and legal issues affecting your family deserve that same level of care and commitment. Whether you’re a longtime resident navigating the end of a marriage, a co-parent planning for the future, or a couple preparing for marriage and financial security, we’re here to help you do it right—with professionalism, precision, and respect.

We understand that in a place like Park Slope, your legal needs may intersect with real estate, business ownership, multi-generational family planning, or public reputation. That’s why our approach is always holistic. We help you think not just about your legal situation today, but where you want to be tomorrow—and how to get there with as little disruption as possible.

Schedule a Confidential Consultation Today

You don’t have to face this alone. If you’re dealing with a family law matter in Park Slope—whether it’s divorce, child custody, financial agreements, or post-judgment concerns—The Mandel Law Firm is ready to provide the legal support and advocacy you deserve.

Call us today at 646-770-3868 or contact us online to schedule a private, confidential consultation. Discover why so many Park Slope families place their trust in The Mandel Law Firm when it matters most.