Perrin Law Offices brings a powerful combination of experience, dedication, and proven results to every case they handle. With a strong track record of successfully advocating for their clients, the firm is committed to protecting individual rights and achieving meaningful outcomes. What sets Perrin Law Offices apart is its unique blend of legal expertise and real-world perspective, allowing the team to approach each case with both strategic insight and practical understanding. Clients can expect personalized attention, relentless advocacy, and a firm that is unwavering in its commitment to justice.
About us.
Our attorneys are highly experienced and well-versed in a variety of legal areas. Trust in our expertise to achieve the best outcome for your case.
★★★★★
4.4 from 1,400+ customers

Real Estate Transactions
Extensive experience handling a high volume of real estate transactions, ranging from straightforward residential closings to complex commercial deals. We have represented buyers, sellers, and lenders with equal proficiency, ensuring each transaction is managed efficiently and with close attention to detail. His depth of experience allows him to anticipate issues, streamline the process, and deliver smooth, successful closings.
Estate Planning
We provide thoughtful estate planning services designed to protect assets, preserve wealth, and ensure clients’ wishes are carried out. He assists with wills, trusts, powers of attorney, and healthcare directives, tailoring each plan to the unique needs of individuals and families. With a clear, practical approach, he helps clients navigate complex decisions and plan confidently for the future.
Landlord & Tenant Cases
We represent both landlords and tenants in a wide range of residential and commercial matters. His practice includes lease drafting and review, evictions, non-payment disputes, and enforcement of lease terms. With a practical, results-driven approach, he works to resolve conflicts efficiently while protecting his clients’ rights and interests.
Areas of Practice
01
Real Estate Buyer & Seller Representation
We provide comprehensive legal representation for buyers and sellers in all aspects of real estate transactions. Whether you’re purchasing your first home, selling a property, or dealing with complex commercial deals, we are here to guide you through every step of the process with expertise and care.
Our Services Include:
Closing Services: Coordinating the closing process, preparing documents, and ensuring smooth, timely transactions.
Representation in Real Estate Transactions: Legal support for buyers and sellers from contract negotiation to closing.
Drafting & Reviewing Contracts: Ensuring purchase agreements, sale contracts, and addendums are clear, fair, and legally binding.
Title Review & Issues: Conducting thorough title searches, clearing title defects, and resolving title disputes.
02
Estate & Probate Planning
At Perrin Law. Offices, we offer comprehensive estate planning and probate services to ensure that your assets are protected, your wishes are honored, and your loved ones are cared for. Whether you’re planning for the future or navigating the probate process after the loss of a loved one, our experienced attorneys are here to provide guidance and support every step of the way.
Estate Planning Services Include:
- Wills & Trusts: Drafting clear and legally binding wills and creating trusts to help distribute your assets according to your wishes.
- Powers of Attorney & Healthcare Directives: Ensuring that your financial and healthcare decisions are managed by trusted individuals if you’re unable to do so yourself.
- Revocable & Irrevocable Trusts: Establishing trusts to manage your assets during your lifetime and beyond, with potential tax and privacy benefits.
- Estate Tax Planning: Minimizing tax liabilities through effective estate planning strategies, including charitable giving and gift planning.
- Asset Protection: Structuring your estate to protect your assets from creditors, lawsuits, and other potential claims.
- Special Needs Planning: Creating plans that ensure loved ones with special needs receive the appropriate care and financial support.
Probate & Administration Services Include:
- Probate Representation: Guiding executors and administrators through the probate process, including filing the will, asset distribution, and handling creditor claims.
- Trust Administration: Assisting trustees in the proper administration of trusts, ensuring compliance with legal obligations and fiduciary duties.
- Dispute Resolution: Representing clients in contested probate cases, will disputes, and disagreements among beneficiaries.
- Estate & Trust Litigation: Handling issues involving breaches of fiduciary duty, undue influence, or challenges to the validity of a will or trust.
- Creditor Claims & Debt Resolution: Managing creditor claims against the estate and ensuring debts are properly settled before assets are distributed.
Whether you’re planning for the future or managing the estate of a deceased loved one, our team provides compassionate, professional guidance. We ensure that your wishes are carried out efficiently and in compliance with all legal requirements.
Contact us today by calling 617-846-8122 to learn how we can assist you with estate planning or probate matters.
03
Civil Litigation
At Perrin Law Offices, we provide expert legal representation in civil litigation, assisting clients in navigating complex disputes and securing favorable outcomes. Our experienced attorneys handle a broad range of civil cases, including tort claims, business disputes, personal injury, and more, with a focus on protecting your rights and achieving justice.
Our Civil Litigation Services Include:
- Contract Disputes: Representing clients in breach of contract, business disputes, and other contractual issues.
- Torts & Personal Injury: Legal representation for victims of accidents, negligence, defamation, and other tortious acts causing harm or injury.
- Business & Commercial Litigation: Resolving disputes between businesses, including shareholder issues, partnership conflicts, and intellectual property matters.
- Real Estate Disputes: Addressing property-related issues, including boundary disputes, landlord-tenant conflicts, and construction defects.
- Employment Disputes: Handling wrongful termination, wage disputes, discrimination, and harassment claims.
- Debt Collection & Bankruptcy: Assisting with debt recovery, creditor disputes, and bankruptcy proceedings.
- Insurance Claims & Disputes: Representing clients in disputes with insurance companies over claims and coverage issues.
Whether through negotiation, mediation, or litigation, we are committed to resolving your dispute efficiently and effectively. Our attorneys work closely with you to craft tailored strategies designed to protect your interests and help you achieve the best possible outcome.
Contact us today to discuss how we can assist with your civil litigation needs.
04
Business & Corporate Representation
Comprehensive, strategic legal counsel for businesses at every stage—from startup and formation through growth, transition, and dispute resolution. Attorney Sean M. Perrin advises on entity selection and formation, corporate governance, shareholder and operating agreements, and day-to-day legal operations. He drafts, reviews, and negotiates a wide range of contracts, including vendor agreements, service contracts, partnership agreements, and non-compete/non-disclosure agreements, with a focus on clarity and risk reduction.
Why Choose Us?
- Personalized Solutions: Strategic legal guidance aligned with your business goals.
- Proactive risk management to prevent costly disputes.
- Strong litigation background when disputes cannot be avoided.
Contact us today to schedule a consultation and learn how we can assist with your business needs.
Our Amazing Team
Our legal team delivers strategic, precise, and results-driven counsel—combining deep expertise with a practical approach to achieve effective outcomes for our clients.

Brian J. Perrin, Esq.
Attorney Brian J. Perrin is a seasoned legal professional with more than 27 years of experience in the practice of law. Graduating Cum Laude and as a member of Law Review, he brings a strong academic foundation and a disciplined approach to legal analysis and advocacy.
In addition to his legal career, Attorney Perrin has an extensive background in law enforcement spanning over three decades. He served as a Police Lieutenant Detective with a city in Suffolk County, where he was involved in complex investigations and criminal prosecutions. He later rose to the rank of Lieutenant Colonel and served as the second in command with the Massachusetts Environmental Police, overseeing significant operational and leadership responsibilities.
This unique combination of legal expertise and high-level law enforcement experience provides Attorney Perrin with a rare and valuable perspective, allowing him to deliver strategic, informed, and effective representation to his clients.

Sean M. Perrin Esq.
Attorney Sean M. Perrin is a seasoned civil litigation attorney with over 25 years of experience representing individuals and businesses in complex legal matters. A graduate of Suffolk University Law School, where he earned his Juris Doctor magna cum laude, Attorney Perrin has built a reputation for thoughtful advocacy, strategic insight, and unwavering dedication to his clients.
Throughout his career, he has successfully handled a wide range of civil disputes, bringing a meticulous approach to case preparation and a strong presence in the courtroom. Known for his professionalism and client-focused service, Attorney Perrin is committed to achieving practical, effective results while guiding clients through every stage of the legal process with clarity and confidence.
Maintaining strong relationships with our clients is crucial for smooth business operations.