Experienced Virginia attorneys for family law, estates, and real estate
27 Culpeper St · Parking: Street parking available on Culpeper Street; public lots nearby in downtown Warrenton

Licensed Virginia attorney since 1985
Mark B. Williams is a Virginia attorney who has practiced law since 1985, specializing in family law, estate planning, and real estate transactions. He founded Mark B. Williams & Associates, PLC in Warrenton and has built a reputation for personalized, client-centered legal representation throughout Fauquier County and Northern Virginia. With nearly four decades of courtroom experience and deep knowledge of local courts, Attorney Williams provides strategic guidance to families, individuals, and business owners navigating complex legal matters.
“I’m incredibly grateful for the support and representation I received from Alyssa Phillips during my custody case. From day one, she was professional, compassionate, and fully prepared. She took the time to explain the process clearly, answered my questions promptly, and made sure I felt confident every step of the way. Most importantly, she genuinely cared about protecting my children's best interests. It was a very emotional situation for me, and she remained calm, strategic, and strong in advocating for my family. I highly recommend Alyssa Phillips to anyone facing a custody matter.”
“I hired Mark and worked with him for a little over a year on my case. I had a good experience with him and the staff. He’s very informative and knowledgeable with the law and court system. He has a great reputation in this area. He was recommended to me and I am glad I trusted him with my case. Long story short he got me the best possible outcome in my scenario.”
“I can not recommend Mr. Williams and his associates enough! From the very first consultation, they were professional and knowledgeable. They took time to explain every step of the process and made sure we felt confident with the whole situation. His entire office staff were always kind and compassionate (even with my millions of questions lol). I hope to never have to seek his services again...but if we ever need a lawyer in the future, Mr. William will be our first call!”
4.8 ★ avg rating · Verified Mar 27, 2026

| Mon | 8:00 AM – 5:00 PM |
| Tue | 8:00 AM – 5:00 PM |
| Wed | 8:00 AM – 5:00 PM |
| Thu | 8:00 AM – 5:00 PM |
| Fri | 8:00 AM – 5:00 PM |
| Sat | Closed |
| Sun | Closed |