Complex Divorce.
High Conflict Custody.
Real Trial Experience.
Experienced Miami trial lawyers for clients facing aggressive spouses, hidden assets, and contested custody.
Family law disputes demand more than just legal knowledge.
When the stakes are high, you need lawyers who are prepared to fight.
They require strategic thinking, courtroom experience, and an unwavering commitment to protecting your interests. At JJ Family Law, we’ve spent over 30 years navigating Florida’s most complex family law matters. From high-networth divorces to custody disputes that demand forensic expertise, we bring aggressive litigation experience and sophisticated legal strategies to every case we handle.
About JJ Family Law
30+ Years of Family Law Excellence in South Florida
Jonathan Jonasz has been practicing family law exclusively since his admission to the Florida Bar in 1994. Based in Coral Gables, our boutique firm specializes in representing clients through the most challenging family law matters in Miami-Dade County and beyond.
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We don’t believe in one-size-fits-all solutions. Instead, we combine decades of trial experience with personalized legal strategy to achieve the outcomes our clients deserve.
Our practice is built on three core principles: aggressive representation, sophisticated legal strategy, and meticulous client communication. We handle complex divorces involving forensic accounting, custody disputes requiring psychological analysis, and emergencies demanding immediate action.
Whether your case involves high-networth asset division, parental alienation concerns, or cases requiring both family law and criminal defense expertise, we have the knowledge and experience to guide you through it.
We understand that family law matters are emotionally charged and financially significant. We won’t promise you a fairytale ending or suggest that every case concludes perfectly.
What we will promise is skilled legal representation, transparent communication, and lawyers who will roll up their sleeves and get down to business when it matters most. Your case will be handled with the attention and expertise it deserves.
+30
Years of Family Law Experience
1500
Family Law Cases Solved
- Complex Case Specialists
- Coral Gables, Miami
Our Practice Areas
Comprehensive Family Law Services for Complex Matters, Our Expertise spans the full spectrum of family law.
Here's what we handle:
Divorce &
Dissolution
Divorce Representation & Post-Divorce Modifications: We represent clients in divorce and post-divorce matters involving high-net-worth estates, complex asset division, equitable distribution disputes, alimony, business valuations, and enforcement proceedings. Our firm delivers strategic, assertive advocacy, protecting financial interests and long-term outcomes at every stage of the divorce process.
Child Custody & Timesharing
Custody Disputes, Parental Alienation & Timesharing Arrangements: We represent parents in contested custody and timesharing disputes, including relocation and parental alienation matters. Our approach blends strategic legal advocacy with practical insight into child psychology, collaborating with professionals when appropriate to build cases that protect parental rights and child welfare.
Paternity &
Child Support
Paternity Actions, Establishment & Modification of Child Support: We assist clients with paternity actions, establishment, and modification of child support orders. Our firm advocates for parental rights and financial interests, using detailed financial analysis and forensic accounting when necessary to ensure accurate income evaluations, fair support calculations, and enforceable outcomes.
Complex Financial Matters
High-NetWorth Divorce, Forensic Accounting & Asset Division: Our firm handles complex financial matters involving business valuations, forensic accounting, investment portfolios, and trust analysis. We work closely with forensic accountants, valuation experts, and financial specialists to uncover hidden assets and pursue equitable distribution in high-stakes divorce cases.
Domestic Violence & Protective Orders
Protective Orders, Domestic Violence Defense, Enforcement: Our firm handles complex financial matters involving business valuations, forensic accounting, investment portfolios, and trust analysis. We work closely with forensic accountants, valuation experts, and financial specialists to uncover hidden assets and pursue equitable distribution in high-stakes divorce cases.
Emergencies & Urgent Matters
Emergency Injunctions, Emergency Custody Orders, Urgent Relief: Family law emergencies require immediate action. We handle emergency injunctions, emergency custody orders, urgent visitation restrictions, and other time-sensitive relief matters, responding quickly to protect our clients’ rights, including cases involving both family law and criminal defense issues.
International Family Law
International Custody Disputes, Cross-Border Divorce, Hague Convention: For families with international connections, we handle cross-border divorce and custody disputes involving complex jurisdictional issues. Our firm provides experienced representation in Hague Convention matters, navigating international legal frameworks while protecting parental rights, child welfare, and long-term family stability across borders.
Specialized Matters
Prenuptial & Postnuptial Agreements, Relocation Cases, Contempt & Enforcement:
We handle prenuptial and postnuptial agreement drafting, relocation disputes, enforcement actions, contempt proceedings, and post-judgment modifications. Our approach combines precise legal drafting with strategic advocacy to protect client interests, ensure compliance with court orders, and resolve disputes efficiently.
Our Multidisciplinary Approach
Complex Cases Demand Expert Support
High conflict and complex family law matters require more than legal expertise. Our firm works with a carefully selected network of specialized professionals to build the strongest possible case for our clients:
When necessary and when your case involves both family law and criminal components, we leverage our criminal defense experience to provide comprehensive representation across both areas of law.
For asset tracing and income analysis in complex divorces
For custody evaluations and high conflict case analysis.
To manage ongoing custody disputes and co-parenting conflicts
To represent children’s best interests in contested cases
For accurate assessment of business interests and professional practices
For specialized analysis when cases demand it.
Why Choose JJ Family Law
"The Difference Experience Makes"
Aggressive Litigation Experience
We’re Trial Lawyers First: We don’t shy away from contested litigation. When push comes to shove, we’re prepared to fight for your interests in court.
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Our practice is built on courtroom experience, not just negotiation skills. This experience becomes invaluable in high conflict cases.
Sophisticated Case Management
Complex Cases Are Our Specialty: We’ve spent three decades handling the most complex family law matters.
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High-networth divorces, international custody disputes, cases involving forensic accounting, and matters requiring psychological expertise. Strategic Communication deserves.
Frequent Updates, Complete Transparency: You’ll receive frequent email updates with copies of all disclosures, documents, and correspondence.
We believe informed clients make better decisions. You’ll understand your case, your options, and the strategy we’re pursuing.
Boutique Personalized Approach
Your Attorney, Not a Case Number: Unlike large firms where you might work with paralegals and junior associates, you’ll work directly with Jonathan Jonasz.
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You’ll have a personal relationship with your attorney and know exactly who’s managing your case.
Realistic Expectations
Honest Assessment, No False Promises: We won’t tell you that your case will end perfectly or that we’ll solve all your problems. What we will do is provide an honest assessment of your situation, realistic expectations about outcomes, and skilled legal strategy to achieve the best possible result under the circumstances.
Board-Certified Expertise
Florida Bar Board-Certified Specialists: Our team includes attorneys board-certified by the Florida Bar in Marital and Family Law. Board certification means demonstrated expertise, continuing education, and peer recognition.
Testimonials
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Practice Philosophy
We balance aggressive representation with strategic thinking.
While we’re prepared for courtroom battles when necessary, we also recognize that not every case needs to go to trial. Our philosophy is to pursue litigation avoidance when it protects our clients’ interests and achieves their goals but never at the cost of compromising their rights or financial security.
Family law matters are inherently complex because they involve both legal and personal dimensions. Your financial security, parental rights, and family stability are at stake. That’s why we approach every matter with the seriousness it deserves and the strategic thinking that distinguishes skilled advocacy from mere legal service.
Our Procces
What to expect when you start working with JJ Family Law.
Initial Consultation
Understanding Your Situation: During your consultation, we'll listen to your situation, ask tough questions, and provide an honest assessment of your case. We'll explain your options, potential outcomes, and the likely costs and timeline involved.
Case Strategy Development
Creating Your Legal Plan: Once retained, we'll develop a comprehensive case strategy tailored to your specific circumstances. We'll identify the issues that matter most, determine what expert support is needed, and outline our approach to achieving your goals.
Discovery & Investigation
Gathering the Evidence: We'll conduct thorough discovery, obtain necessary documents, and work with any required experts (forensic accountants, psychologists, valuators). You'll receive regular updates on what we're learning and how it affects your case.
Settlement Negotiation or Trial Preparation
Active Representation: We'll aggressively negotiate on your behalf if settlement is possible, or prepare thoroughly for trial if litigation is necessary. Either way, you'll have experienced trial counsel ready to fight for your interests.
Resolution & Post-Resolution Matters
Creating Your Legal Plan: Once retained, we'll develop a comprehensive case strategy tailored to your specific circumstances. We'll identify the issues that matter most, determine what expert support is needed, and outline our approach to achieving your goals.
Complete Transparency Throughout Your Case
Complex Cases Demand Expert Support
Regular communication with copies of all documents, disclosures, and correspondence
We explain legal concepts in plain language so you understand what’s happening in your case
Direct access to your attorney for questions and strategic discussions
Candid discussion about case strengths, weaknesses, and realistic outcomes
Your input matters. We’ll explain options and discuss strategy, but we won’t leave you guessing about case direction
Reviews From Our Clients
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J.K.
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Read Our Blog
Navigating High-Stakes Family Law Matters with a Trial-Ready Attorney in Miami
When child custody arrangements fall apart or multimillion-dollar marital estates are at stake, the courtroom isn’t just a formality, it’s a battlefield. At JJ Family Law, based in the heart of Miami, we’ve seen how a single misstep early in a family law case can snowball into years of prolonged litigation, financial strain, and emotional exhaustion.
What You Need to Know About Hiring an Alimony Lawyer in Miami
When a divorce involves financial disparity between spouses, alimony becomes one of the most contested issues. Whether you’re advocating to receive support or facing demands to pay, the stakes are serious and the outcome can define your financial life for years. In Miami, navigating Florida’s alimony laws requires more than general knowledge. It demands strategic, often aggressive legal advocacy grounded in experience and courtroom strength.
What to Know When Hiring a Child Support Lawyer in Miami
In heated custody battles or quiet divorce settlements, child support arrangements when structured improperly can lead to years of tension, missed payments, and courtroom returns. Florida law has specific rules on how child support is calculated and enforced, but real life is rarely textbook. Hidden income, underemployment, inconsistent visitation, or blended families often complicate what should be a straightforward calculation.
Ready to Discuss Your Family Law Matters?
If you’re facing a family law challenge, we’re ready to listen. Contact us to schedule a strategic consultation. We’ll discuss your situation, explain your options, and help you understand what comes next.