About



When a business is driven primarily by referrals, you know they’re doing something right! As a long-time resident of The Woodlands and active member in its community, Kathy Sexton is a valuable resource for first-time buyers and long-time investors alike. Knowledgeable, experienced, enthusiastic, and reliable, she prides herself on exceeding client expectations with personalized service and an unwavering attention to detail. With a well-qualified support team at her disposal—including a transaction coordinator, marketing coordinator, professional photographer, and interior decorator—Kathy has the tools and know-how to find the best home for you and your family, negotiate the most advantageous deal for all involved, and make closing a smooth and stress-free experience. As a “Woodlands specialist,” Kathy has worked with all the major relocation companies for clients buying and selling, including Cartus, Sirva, GMAC, and Cendant. She lives and works in The Woodlands with her husband.

The Brownstone Group is the premier source for buying and selling real estate in The Woodlands and North Houston. As an associate of Keller Williams, we’re experts on both sides of the negotiating table—working tirelessly to ensure the highest sale price for your home, and reaching the best deal when you find the one you love. Our unique individualized and buyer-targeted marketing plans position your home to sell—with excellent results. And our personal investment in your home sale or search is the foundation of our customer service; we’re committed to seeing you through, from beginning to end. Here at The Brownstone Group, we can say with absolute certainty that it’s our combination of positive spirit, accessibility, and expertise that continues to drive our success, year after year. Voted the “Most Innovative Real Estate Company” by Inman News, Keller Williams® Realty takes a different approach, one that is built on personal touches, a professional approach and positive responses.

  • KATHY IS A PROUD MEMBER OF: National, Texas, and Houston Associations of Realtors®; Keller Williams Agent Leadership Council; Keller Williams Relocation Team; The Woodlands United Methodist Church; SW Montgomery County Lions Club; National Charity League and National Charity Roundtable
  • KELLER WILLIAMS The Woodlands TOP PRODUCER
  • MULTI-MILLION DOLLAR PRODUCER
  • ABR Accredited Buyer Representative
  • CLHMS Certified Luxury Home Marketing Specialist
  • GREEN designation – Member of the Green REsource Council
  • CNHS – Certified New Home Specialist



Assistant to The Brownstone Group – Dawn Klefos

Dawn Klefos began pursuing her dream of working in real estate by taking classes and working for a homebuilder, then joined The Brownstone Group in 2012. She connected to Kathy through a Woodlands school that their children attended and National Charity League where both women volunteered. Dawn realized they would be a great fit to work together, and that she could learn from Kathy’s expertise in real estate and technology.

Dawn grew up in St. Louis but got to Texas as fast as she could to attend the University of Houston to obtain her business degree! After working for Olsten Temporary Services in sales, she then spent her early motherhood years serving as a Girl Scout leader and volunteering in committees for National Charity League. As a 23 year member of The Woodlands United Methodist Church, she has served on various boards, led service projects and taught Vacation Bible School for 10 years. She currently volunteers for Interfaith of the Woodlands on community activities. Dawn has two daughters who have graduated from College Park High School and reside in The Woodlands and San Marcos, and as a mom, was always involved in their school lives through fundraisers, PTO, homeroom mom, and substitute teacher. While her girls where in college, she enjoyed working for Lone Star College as an advisor, helping first-generation low-income students obtain their dream of higher education.

As a licensed Realtor, Dawn continues to grow and learn, enjoys being a team player and provides the best customer service possible. She loves spending time with her family and friends, travelling, hiking in the mountains of New Hampshire every summer with her dog, and keeping up with current events.