Excellence in Legal Representation

Welcome to Sullivan Law Group, LLC, where personalized attention meets expert legal counsel.
Located in Duxbury, Massachusetts, we are dedicated to serving clients with integrity, professionalism, and a commitment to achieving optimal outcomes.

lawyers and client in meeting

Who We Are

At Sullivan Law Group, we understand that legal matters can be complex and challenging. Led by Sean Sullivan, an experienced attorney with a proven track record in litigation and transactional law, our team is dedicated to offering tailored solutions for individuals, businesses, and organizations.

With deep roots in the Massachusetts legal community, we pride ourselves on building long-lasting relationships with our clients, providing transparent communication, and delivering results-driven advocacy.

Practice Areas

We specialize in a wide range of legal services, including:

Real Estate Litigation & Land Use

Navigating land use, and real estate disputes with precision, including adverse possession, easement disputes and zoning related matters.

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colonial home

Business Law

Guiding businesses through transactional and litigation challenges to ensure their success and growth.

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Civil Litigation

Advocating for clients in complex disputes, including personal injury claims, contract disagreements, and more.

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man signing legal contract

Personal Injury

Injured? You may be entitled to compensation. We have represented individuals in complex personal injury matters.

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General Practice

We represent individuals, families and businesses in a manner of day-to-day legal matters including contracts, real estate, limited liability companies and corporations. We have helped families over the years with guidance on family owned businesses and protecting real estate assets through a variety of legal strategies.

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Why Choose Us?

  • Personalized Service: Every client receives individual attention and strategies tailored to their unique needs.
  • Expertise You Can Trust: With years of experience and a focus on results, we are equipped to handle even the most complex legal challenges.
  • Community Focused: Our practice originated in the South Shore of Massachusetts and has since expanded to Boston and New Hampshire. We are deeply invested in continuing to serve our clients in all geographic locations where we practice. Our clients continue to choose us year after year for legal guidance on a variety of matters and we want to ensure that we are your trusted counsel for your legal needs.
business lawyer showing contract to client

PERSONAL INJURY

$3.8 MILLION

Bicyclist Run Over by Bus

LITIGATION SETTLEMENT

$280,000

Breach of Contract Dispute

LITIGATION SETTLEMENT

$269,625

Breach of Promissory Note

PERSONAL INJURY

$100,000

Motor Vehicle Collision

Case Results

Our clients are our priority, and their successes are our greatest achievement. From resolving zoning disputes to securing justice in personal injury claims, we are proud of the outcomes we deliver for those we serve.