Our Team

Leading Real Estate Professionals in business for over 30 years.

Our team consists of Broker Associate, Mark Stevens, Licensed Real Estate Assistant & Marketing Director, Michelle Magnus, Online Marketing and Website Consultant, Erin O’Brien; and Joe Hughes of Phelps and Associates, on retainer for all mapping and survey data research. Led by our knowledge and love for Wine Country our passion is working with both Buyers and Sellers to help them realize their version of the American Dream – whatever that may look like.  Whether it’s a multi-million dollar Winery/Vineyard Estate, a country property with acres to roam, or a 3/2 Rancher in a subdivision, we are here to help you achieve your real estate dreams and goals.

  • Mark Stevens

    Mark Stevens
    Broker Associate
    DRE#: 00971195
    707.322.2000
    Mark.Stevens@SothebysRealty.com
    estatevineyard.com

    Mark Stevens has evolved into a vineyard and winery specialist throughout Northern California working with both lifestyle clients and prominent wine industry businesses. He counsels buyers and sellers in the acquisition and disposition of wineries, vineyards and specialty luxury residential properties. A realtor since 1987, he is the Chair of the Global Winery and Vineyard Estates for Sotheby’s International Realty. He holds several designations awarded by the National Association of Realtors, including Certified Residential Specialist (CRS) and Certified Commercial Investment Member (CCIM).

    “I love this business,” he says. “It is exciting to participate in the process and counseling of property owners and businesses that make a real difference in the intelligent, rewarding use of our lands. [We’re] keeping our North Bay on a firm agricultural footing for generations to come through sustainable farm practices, and supporting a growing wine industry providing rewarding work for our residents.”

  • Michelle Magnus

    Michelle Magnus
    Licensed Real Estate Assistant & Marketing Director
    Michelle.Magnus@SothebysRealty.com
    estatevineyard.com

    A California native, Michelle spent her childhood between Kauai and San Diego. She earned her B.S. Degree in Fine Art and Creative Writing from Eastern Oregon University, and went on to pursue a career in graphic design and marketing. Michelle obtained her Hawaii real estate license, worked as a real estate assistant in Lake Tahoe, and now works with the Mark Stevens team as a licensed real estate assistant and marketing specialist. A self-proclaimed fitness junkie and art aficionada, Michelle’s background includes endurance competition in AERC, and living in a variety of spectacular areas: Kauai, San Diego, Santa Fe, Santa Barbara, Oregon, Colorado, and most recently, Northern California Wine Country.

  • Erin O’Brien

    Erin O’Brien
    Online Marketing and Website Consultant
    Erin@ErinOBrienCreative.com
    erinobriencreative.com

    A Sebastopol Native, Erin O’Brien is an Online Marketing and Website Consultant with local, national & international clientele. She earned a Masters degree in Education with an emphasis in Technology and Sustainability, and has over a decade of experience writing, researching and editing. Additional areas of expertise include web development, data organization, educational programming & leadership training.

    Her business—Erin O’Brien Creative—designs beautiful websites, graphics & content. Defined by innovation, research and excellent communication, she helps develop and meet your online marketing and web development goals. Erin builds creative relationships with her clients that bring out the best in everyone involved. Together with her clients, she designs authentic and motivational content that engages the values and needs of customers and/or audiences while helping them (her clients and their audiences) develop long-term relationships.

  • Phelps & Associates Land Survyeors

    Phelps & Associates Land Survyeors is a professional land surveying firm specializing in Boundary Retracement, Topographic Mapping, Subdivisions, Construction Staking, ALTA Surveys and GPS.

    For over 30 years, Phelps and Associates Land Surveyors has served Sonoma, Marin, Napa and Mendocino counties.  Phelps is licensed by the Board of Professional Engineers and Land Surveyors, and the firm is fully insured.  The office and field procedures are fully computerized and all field equipment consists of the latest in electronic theodolites with built-in distance measuring capability, along with the best-you-can-get, real time kinematic Global Positioning System receivers.

    Phelps is an invaluable asset to Mark Stevens’ team providing acurate mapping, ALTA surveys and boundary retracements.  They are exceptionally knowledgeable and a joy to work with.

We’d love to hear from you!

Get in touch with us

Our Location

7775 Healdsburg Avenue
Sebastopol, CA 95472
707.824.0200

MARK STEVENS
C: 707.322.2000

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