Estate Planning and Real Estate Law Attorney in Manhasset, NY

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Protecting Your Family's Future Starts Here


Life throws curveballs. When family conflicts arise, estates need to be settled, or real estate deals become complicated, you need legal guidance you can trust. At Law Office of John Mangelli, we help Long Island families navigate their most important legal matters with confidence and clarity.


For over 25 years, we've been handling the cases that matter most to families—estate planning, probate, real estate transactions, and elder law issues. We understand that these situations are personal, often emotional, and always crucial to your family's future.



Ready to Protect What Matters Most? Let's Talk.

Are You Facing These Common Legal Challenges?

Legal problems don't wait for convenient times. Maybe you're dealing with a loved one's passing and facing probate court. Perhaps you're buying your first home, and the contract looks overwhelming. Or maybe you're watching aging parents struggle with decisions about their care and finances.


These situations create stress and uncertainty:

  • Probate proceedings that seem to drag on forever
  • Real estate contracts are filled with confusing legal language
  • Family disputes over inheritances and estate decisions
  • Elder care planning that feels overwhelming and complicated
  • Estate planning documents that sit unfinished year after year


You shouldn't have to navigate these challenges alone. Every day you wait, problems can get more complicated and expensive to resolve.

The good news? With proper legal guidance, these situations become manageable. We've helped hundreds of Long Island families work through similar challenges successfully.



Don't Let Legal Problems Get Worse—Get Help Now

How We Help Long Island Families

We focus on the legal services Long Island families need most. Our approach is straightforward—we listen to your situation, clearly explain your options, and help you make informed decisions that protect your interests.


Estate Planning & Wills

Creating a will isn't just about dividing assets. It's about making sure your wishes are followed and your family avoids unnecessary conflict. We help you create comprehensive estate plans tailored to your unique situation.

  • Wills that clearly express your wishes and minimize family disputes
  • Trust structures that protect assets and provide tax advantages
  • Healthcare directives and powers of attorney for peace of mind


Probate & Estate Administration

When a loved one passes away, dealing with probate court shouldn't add to your stress. We guide families through the entire process, handling paperwork and court requirements so you can focus on what matters.

  • Streamlined probate proceedings that move efficiently through the courts
  • Clear communication about timelines, requirements, and next steps
  • Professional handling of creditor claims and asset distribution


Real Estate Law

Real estate transactions involve substantial amounts of money and complex contracts. Whether you're buying, selling, or facing property disputes, we make sure your interests are protected throughout the process.

  • Contract review and negotiation that protects your investment
  • Smooth closings with all documentation properly prepared
  • Resolution of title issues, boundary disputes, and property conflicts


Elder Law

Aging presents unique legal challenges related to healthcare, finances, and family dynamics. We help families plan for the future while protecting the dignity and wishes of aging loved ones.

  • Medicaid planning that preserves assets while ensuring proper care
  • Guardianship proceedings when family members need additional protection
  • Long-term care planning that addresses both legal and practical concerns



See How We Can Help Your Family—Schedule Your Consultation

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Real Results for Real Families

Every case we handle is personal. We've seen how proper legal guidance can transform stressful situations into manageable processes with positive outcomes.


One family came to us after their father passed away, leaving behind a complicated estate with multiple properties and business interests. The probate process seemed overwhelming, and family members were starting to disagree about the distribution of assets.


We organized the entire probate process, communicated regularly with all family members, and resolved potential disputes before they became expensive conflicts. The estate was settled efficiently, and the family relationships remained intact.


Another client needed help with Medicaid planning for her aging mother. The family was concerned about preserving assets while ensuring proper healthcare coverage. We developed a complete plan that protected family assets while qualifying the mother for necessary benefits.


In real estate, we've helped first-time homebuyers navigate complex purchase agreements, resolved title issues that threatened to derail closings, and negotiated contract terms that saved clients thousands of dollars.


These outcomes happen because we take time to understand each family's unique situation and goals. Contact us to discuss how we can help your family achieve similar results.



Get the Same Professional Results—Schedule Your Free Consultation

Why Long Island Families Choose Us

Legal representation should provide clarity, not confusion. We've built our practice around making complex legal matters understandable and manageable for the families we serve.


You'll work directly with an attorney who understands New York law and local court procedures. We explain legal concepts in plain English, keep you informed about case progress, and always return phone calls promptly.


Our office locations throughout Long Island, in Syosset, Flushing, Melville, Lake Success, and Manhasset, make it convenient to meet when you need legal guidance. We maintain flexible scheduling because legal matters often don't occur during regular business hours.


Many clients appreciate our straightforward fee structure. We explain costs upfront, provide written fee agreements, and never surprise you with unexpected charges. For many services, we offer flat-fee arrangements, so you know exactly what to expect.


We also understand that legal problems can create financial stress. That's why we accept various payment methods, including traditional checks, cash, and modern options like Zelle and Venmo, to make payment convenient for your situation.



Licensed to practice in both New York and Florida, we can assist with legal matters in multiple jurisdictions when family situations cross state lines.

For a comprehensive overview of how we can assist your family, visit our services page or contact our office directly.

The Right Time to Get Legal Help

Many families wait too long to address legal matters, believing they can handle things themselves or that problems will resolve on their own. Unfortunately, delay often makes situations more complicated and expensive to resolve.


Don't wait until you're facing a crisis. Estate planning is most effective when you have the time to consider options carefully. Real estate transactions go smoothly when legal review happens early in the process. Elder law planning is most effective before health crises occur.


Even if you're not sure whether you need legal assistance, a brief consultation can provide valuable clarity about your situation and available options. Many clients tell us they wish they had called sooner.


Legal problems rarely improve with time. Property disputes can escalate into expensive litigation. Estate matters can become complicated by family conflicts. Real estate deals can fall through due to unresolved legal issues.


Investing in proper legal guidance is almost always less costly than the expenses incurred from delays or inadequate representation.


Don't Wait for Problems to Get Worse—Call Today



Ready to Move Forward? Let's Discuss Your Situation

Taking the first step toward resolving legal matters doesn't have to be complicated. We make it easy to get the information and guidance you need to make informed decisions about your family's future.


During your initial consultation, we'll listen to your concerns, review relevant documents, and clearly explain your options. You'll leave with a better understanding of your situation and a clear path forward.


We handle scheduling flexibly because we understand that legal matters often require prompt attention. Whether you need to discuss estate planning, resolve a probate matter, handle a real estate transaction, or address elder law concerns, we're ready to help.


Our office serves families throughout Long Island and the surrounding areas, with convenient locations and flexible meeting arrangements to accommodate your schedule and needs.


Remember, many legal matters are time-sensitive. Court deadlines, filing requirements, and contract terms don't wait for convenient timing. The sooner you get proper legal guidance, the more options you'll have available.


Ready to Get Started? Your Family's Future Is Worth Protecting.



Call us at (516) 319-6018 to schedule your consultation, or reach out through our website. We're here to help Long Island families navigate their most important legal matters with confidence.