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    Sue O'Brien and Jennifer Lanners bring a combined expertise and passion for Mammoth Lakes real estate, offering clients unparalleled knowledge of the local market and a commitment to making mountain living dreams a reality.

    Leading Real Estate Agent in The REGION

    Sue O'Brien

    Sue is a distinguished realtor at Mammoth Realty Group, consistently ranking among the top 10 producers in Mammoth Lakes over the past 19 years. Her expertise extends throughout the Eastern Sierra, encompassing areas from Virginia Lakes to Bishop, CA. Prior to her real estate career, Sue built foundational knowledge in legal matters as a paralegal in Orange County and acquired development insights at Mammoth Mountain Ski Area and Intrawest Development. With a digital-forward approach, Sue leverages her extensive online network, including and major real estate platforms. Recognized for her excellence in both short sales and luxury residences, Sue’s dedication to her clients’ success is unparalleled.

    At our Mammoth Lakes brokerage, we don’t just facilitate transactions – we craft experiences. Drawing on the combined strengths and local expertise of Jennifer and Sue, we’ve created a space where dreams meet reality, ensuring every client feels at home. 

    Leading Real Estate Agent in The Region

    Jennifer Lanners

    Jennifer Lanners, a Santa Monica transplant, brings over a decade of experience from her tenure as a hairstylist, which sharpened her exceptional communication and active listening skills. Since relocating to Mammoth a decade ago, she’s immersed herself in property management, providing clients with valuable insights into optimizing their real estate investments. When she isn’t dedicating herself to clients, Jennifer embraces the Mammoth lifestyle – from skiing to hiking. Let her guide you in realizing your Mammoth real estate aspirations.

    What Our Clients Have to Say

    Client Testimonials

    I was pleased with the way Sue and Stephanie handled the recent sale of my condo. She answered all my questions with patience and a friendly manner. I felt confident in her knowledge and attention to detail. Her manner helped to make the whole process as easy for me as possible.


    We are very satisfied with the job Sue has done for us. She was honest in the answers she gave to our questions and very professional. We recommend Sue to our friends.


    We were pleased with a very up front approach to dealing with us. You used a business like approach to us when you showed us places to purchase and when you listed our home...We had smooth operations with both closing of the place we bought and the one we sold. It was a pleasure to work with you.


    Sue is available, professional, and extremely pleasant. It's very obvious that real estate is her profession, and that she is a professional, not an amateur or "hobbyist." She is well-connected and knowledgeable about all aspects of a real estate transaction and knows her market well. Her colleagues are equally professional and personable, and we appreciated her whole-hearted commitment and dedication.


    Just a quick note to let you know how pleased I am with your company. I needed to sell my condo quickly so I listed my condo with you and 12 days later I had an accepted offer! Your whole team worked well together, and I’m impressed with the way the marketing, prospecting and closing was handled. I really like that there was always someone available to answer my questions. I look forward to working with Mammoth Realty Group in the future.


    What I particularly appreciated about Mammoth Realty Group: You were always honest and candid. You never wasted my time. You were at all times a thorough and persevering professional. You did everything in a timely manner, with a positive attitude.


    Sue O'Brien was wonderful in every way. If we move again in the future, we will use her services.


    I have purchased condos on four occasions. Mammoth Realty Group is by far the best real estate brokerage with whom I’ve ever worked. When it comes time to recommend a real estate broker, we will recommend you.


    With your help it was easy to determine which property best suited our needs. The financial decision to purchase was made based on solid facts which you promptly made available. I feel very comfortable recommending you to anyone, your work speaks for itself.


    We truly appreciate all the hard work you put into helping us find our mountain home. The exceptional personal service provided by you and your team certainly should be commended. You can definitely count on our recommendations for your services to our friends.

    Book A Showing

    Book A Showing

    Interested in one of our properties? Let's Get Started!