Estate Planning and Real Estate Law Attorney in Brookhaven, NY

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Trusted Legal Representation in New York - Law Office of John Mangelli

When life presents complex legal challenges, you need reliable counsel who understands both the law and your unique situation. At theLaw Office of John Mangelli, we offer comprehensive legal services throughout New York, with a focus on the areas of law that matter most to individuals and families throughout their lives.


Since 1996, our practice has guided clients through some of their most important legal decisions. From estate planning and elder law to real estate transactions and probate matters, we approach each case with thorough preparation and a genuine commitment to achieving favorable outcomes for our clients.



Legal matters rarely arise at convenient times, which is why we maintain availability around the clock. Whether you face an urgent estate issue or need guidance on complex real estate transactions, our responsive approach ensures you receive the attention your case deserves when you need it most.

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Are You Facing These Common Legal Challenges?


Tired of worrying about your family's financial future without proper estate planning in place? Many New York residents postpone creating wills and trusts, leaving their loved ones vulnerable to lengthy probate proceedings and unnecessary tax burdens.

Legal challenges often feel overwhelming because the stakes are high and the consequences long-lasting. Consider these common situations that bring clients to our practice:



  • Family members disagreeing over estate distribution during probate proceedings
  • Elderly relatives needing immediate legal protection from financial exploitation
  • Property buyers discovering title issues days before closing
  • Business owners are lacking proper succession planning for their companies
  • Families are unprepared for Medicaid planning and long-term care costs


These situations create stress and uncertainty, but they also represent opportunities to secure your future and protect what matters most. The right legal guidance transforms complex challenges into manageable solutions with clear paths forward.

Without proper legal planning, families often face avoidable disputes, excessive taxes, and costly delays. New York's legal landscape includes specific requirements and deadlines that can significantly impact your rights and options if not addressed promptly.

Ready to Address Your Legal Concerns? Let's Discuss Your Options

Complete Legal Services for Life's Important Decisions


Our practice covers the essential legal areas that impact individuals and families throughout New York. We handle each matter with careful attention to detail and clear communication about your options and next steps.


Estate Planning and Wills

Proper estate planning protects your family's future and ensures your wishes are honored. We create complete plans that minimize taxes, avoid probate delays, and provide clear guidance for your loved ones during difficult times.

  • Customized wills that reflect your specific family situation and goals
  • Trust structures are designed to protect assets and reduce tax obligations
  • Healthcare directives and financial powers of attorney for incapacity planning


Elder Law and Asset Protection

As we age, legal planning becomes increasingly important for protecting assets and ensuring quality care. Our elder law services help families navigate Medicare, Medicaid, and long-term care planning while preserving family wealth.

  • Medicaid planning strategies that protect family assets from nursing home costs
  • Guardianship proceedings to protect vulnerable elderly family members
  • Asset protection techniques for retirement and long-term care planning


Probate and Estate Administration

When a loved one passes away, probate proceedings can feel overwhelming. We guide executors and beneficiaries through the entire process, handling court filings, asset distribution, and creditor communications with efficiency and sensitivity.

  • Complete probate administration from initial filing through final distribution
  • Estate litigation support for contested wills and beneficiary disputes
  • Trust administration services for ongoing management of trust assets


Real Estate Transactions

Real estate transactions involve substantial financial commitments and complex legal requirements. We protect your interests throughout the entire process, from contract review to final closing, ensuring smooth transactions and clear title transfers.

  • Residential and commercial property purchases and sales
  • Contract negotiations and due diligence review
  • Title examination and resolution of ownership issues

For a complete overview of how we can help with your specific legal needs, our services page provides detailed information about each practice area and our approach to client representation.

See How We Can Help with Your Legal Matter
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Real Results for Real People

Our clients choose us because we deliver practical solutions that work in the real world. While every case is unique, these examples demonstrate the tangible outcomes we achieve for families throughout New York.


One family came to us after discovering a caregiver had financially exploited their elderly father. Within six weeks, we secured a guardianship order and recovered over $180,000 in misappropriated funds while establishing proper oversight for his care.


A small business owner worried about succession planning worked with us to create a complete estate plan that included business valuation, tax minimization strategies, and family trust structures. The plan saved his heirs an estimated $340,000 in estate taxes while ensuring smooth business continuity.

During a complex probate dispute involving multiple beneficiaries and contested assets, we negotiated a settlement that avoided costly litigation and preserved family relationships. The estate was distributed according to the deceased's true intentions within four months, rather than the typical 18-month court process.


A young couple purchasing their first home faced title complications that threatened to derail their closing. We identified the issues early, worked with all parties to resolve the title defects, and ensured the transaction closed on schedule with full title insurance protection.



These outcomes reflect our commitment to finding practical solutions that protect our clients' interests while minimizing stress and expense. Every case receives the same thorough attention and creative problem-solving approach.

Get Similar Results for Your Legal Matter

Why Choose Law Office of John Mangelli

Legal representation should provide clarity, not confusion. Our approach focuses on understanding your goals, clearly explaining your options, and working efficiently to achieve the outcomes you need.


With nearly three decades of practice in New York, we understand how local courts operate, what judges expect, and how to navigate the specific requirements that can make or break your case. This knowledge translates into faster resolutions and better outcomes for our clients.


We maintain multiple office locations throughout Nassau and Suffolk Counties, making it convenient for clients across Long Island to access quality legal representation. Our flexible scheduling accommodates your busy life, and our 24/7 availability ensures urgent matters receive immediate attention.

Unlike large firms where you might work with different attorneys throughout your case, you'll have direct access to experienced counsel who knows your situation and can make decisions quickly when opportunities arise or deadlines approach.


Our fee structures are transparent and fair, with many services available on a flat-fee basis so you know exactly what to expect. We believe legal representation should be accessible to families and individuals who need it, not just those with unlimited resources.


Technology integration allows us to work efficiently while maintaining personal service. Secure client portals, electronic document signing, and virtual consultations make the legal process more convenient without sacrificing the personal attention your case deserves.



Client education remains a central component of our practice philosophy. We ensure that you understand not only what we're doing, but also why we're doing it and how it serves your long-term interests. Informed clients make better decisions and achieve better outcomes.

Take Action on Your Legal Matter Today

Legal issues rarely improve with time. Whether you need estate planning, face a probate challenge, or require assistance with real estate transactions, prompt action is essential to protect your rights and preserve your options.


Are you unsure if your situation requires immediate legal attention? Many problems that seem minor initially can become significant obstacles if not addressed properly. A brief consultation can clarify your position and outline your next steps.


We offer complimentary initial consultations to discuss your specific situation and explain how we can assist you. During this meeting, you'll learn about your legal options, understand the timeline for resolution, and receive clear information about costs and next steps.


Our consultation process is straightforward and pressure-free. We listen to your concerns, ask clarifying questions, and provide honest assessments about your case. If we're not the right fit for your needs, we'll refer you to appropriate resources.


To schedule a consultation or learn more about our services, please contact us today. We respond to all inquiries promptly and can often accommodate urgent scheduling needs when time-sensitive matters arise.


Don't let legal uncertainty control your decisions or limit your options. With the right counsel and timely action, most legal challenges become manageable steps toward protecting your interests and achieving your goals.


Ready to Get Started? Let's Talk About Your Legal Needs.