PROVIDING LEGAL SUPPORT IN SUBURBAN PHILADELPHIA AREA
TRUSTED LEGAL GUIDANCE FROM AN ATTORNEY WITH PERSONAL CONCERN FOR YOU
ADVICE FROM A GENERAL PRACTICE LAW FIRM
As a well-established estate, real estate, and commercial law firm practicing in Delaware, Chester, and Montgomery Counties, the Law Office of William Adair Bonner is dedicated to prompt and personal service to its clients’ needs. Whether you are seeking estate planning,
Purchasing a home or developing your business, our office provides advice and services to advance your success and peace of mind. When your issues necessitate litigation, this office provides experience and wise counsel in an efficient manner with integrity and concern for your future. Our services cover everything from estate planning to business creation to commercial and real estate litigation. Trust our office to protect your interests with care and dedication.
Advocate for Real Estate, and Civil Law
When experience and integrity matter, I’m here to advise and advocate for you. My name is William A. Bonner, and I’ve built my legal practice on trust, attention to detail, and a commitment to helping people through decisive moments in life.
Whether you're dealing with estate administration, navigating a real estate transaction, or facing civil litigation, I work with you to understand your goals and protect your interests. My approach is mission-driven—focused on your unique situation, not just the legal process.
I work with individuals, professionals, fiduciaries, and families on matters involving
- Residential and commercial real estate
- Estate planning and administration
- Business creation and management
- Civil and commercial litigation
- Civil rights and liberties
I believe in clear communication, strong advocacy, and doing what’s right for every client who walks through my door.
Estate Administration: Navigating with Compassion
Handling estate matters can be daunting, especially during challenging times. Our practice emphasizes empathy combined with professionalism to guide you through estate administration. Ensuring the accurate distribution and management of assets, we take pride in offering personalized, attentive service tailored to your needs. Our detailed and considerate approach aims to alleviate the burden and provide clarity. Let us assist you in honoring your loved one’s intentions. Experience a smoother estate journey with our reliable legal guidance.

“My clients know that I will always keep in close communication with them and that they will always be fully informed of all developments in their case. I maintain evening and weekend hours for clients unable to make visits during regular hours.” - William A. Bonner
Meet WILLIAM ADAIR BONNER
William Adair Bonner is engaged in the general practice of law in Suburban Philadelphia, focusing on advising individuals, professionals, fiduciaries, non-profits, and families. His work spans a broad range of legal matters.
Mr. Bonner earned his Bachelor’s Degree in History from Gettysburg College. Following his undergraduate education, he served for two years in the United States Army. He then earned his Juris Doctor (J.D.) from Pennsylvania State University’s Dickinson School of Law. Upon graduation, he clerked for a Common Pleas Judge in Delaware County, Pennsylvania, before establishing his legal practice alongside his late father, Hugh Bonner, Esquire.
He is admitted to practice before the Supreme Court of the United States and the Supreme Court of Pennsylvania. Additionally, Mr. Bonner has litigated in the U.S. Courts of Appeals for the Third and Fourth Circuits, as well as in the U.S. District Courts for the Eastern, Middle, and Western Districts of Pennsylvania. He has also appeared pro hac vice before the U.S. District Court for the District of New Jersey and the U.S. District Court for the Western District of Virginia.
Your Trusted Partner in Legal Matters
With expertise in various legal areas, we are here to guide you through your legal challenges.
Contact the Law Office of William A. Bonner today to arrange a consultation and advance in securing your legal rights.

Property Lawyer
Whether you're buying or selling property, facing a dispute, or needing guidance on real estate matters, we provide expert advice to help you navigate the complexities of property law.

Wills and Trusts Lawyer
We assist you in creating and managing wills and trusts, ensuring your assets are distributed according to your wishes and offering comprehensive support for estate planning.
Expert Property Lawyer for Real Estate Matters
Whether it's residential or commercial real estate, our expertise as property lawyers ensures your investments are secure. We meticulously oversee transactions, making sure every detail aligns with your goals. By navigating Delaware County's real estate maze with precision and care, we ensure a seamless experience. From negotiations to documentation, our attention to detail saves time and hassle. Let's safeguard your real estate investments—reach out to protect your property interests today!
Comprehensive Commercial Litigation
Are you dealing with commercial disputes? Let our experienced team guide you through the labyrinth of commercial litigation. Known for our analytical prowess and skillful negotiation, we address conflicts with a keen strategy tailored to your business's needs. Whether engaged in negotiations or representing you in court, we approach every case with firm resolve. Gain peace of mind as we work tirelessly to protect your interests and secure favorable outcomes.
Civil Rights and Liberties: Guardians of Justice
Standing up for justice is at the heart of our civil rights and liberties legal practice. We dedicate ourselves to preserving your freedoms and ensuring equality under the law. Our knowledgeable attorneys advocate effectively for your civil rights, addressing violations with courage and competence. We’re here to protect what matters most: your justice and equality. Join us in upholding the principles of fairness and justice for all.
Frequently Asked Questions
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Our Office:
Glen Mills, PA 19342
Operating Hours
Monday to Friday: 8:00 am - 6:30 pm
Weekends and evenings by appointment.