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Maggi Costello | LIV Sotheby's International Realty Agent

Maggi Costello | LIV Sotheby's International Realty

Agency LIV Sotheby's International Realty


Prior to finding my dream career in Real Estate, I attained a degree in Interior Design and was a business owner (two coffee shops in Denver). I grew up in Wisconsin and moved to Colorado 25+ years ago while working with Nordstrom, where I was so blessed to have instilled THE Customer Service Mentality I have carried with me through my career journey. Careful listening and genuine interest in my clients is how I build my business and lasting relationships.
As a member of LIV Sotheby’s International Realty, I truly love my career and sharing it with both new and veteran home buyers and sellers alike. I serve the Boulder County area, as well as Breckenridge/Summit County. Creating an experience and building relationships is what brings me the most joy. Whether buying or selling, I am committed to giving my clients 110%. I pride myself in listening, delivering and walking through the entire process with confidence and control.
I have four amazing kids, two sons and two daughters. Fitness has always been my passion. In the past I was an avid Triathlete, Cyclist, Trail Runner and Body Builder. Now I enjoy fitness for the JOY of it. My ultimate goal is to Love God, Love People. Each transaction is a blessing to me, a relationship, an experience that is a gift. I will give a portion of each transaction to an organization dear to my heart, The Association for The Recovery of Children (rescuing kids from sex trafficking).

Exciting news! My journey has recently led me to beautiful Breckenridge and Summit County. Here, I am thrilled to announce the expansion of my real estate and design business. Partnering with my talented husband, who is a skilled custom home builder, we are set to create unparalleled living spaces that harmonize exceptional design and craftsmanship.
A Perfect Blend:
Our collaboration signifies more than just a partnership; it’s a blend of passion, innovation, and dedication. By merging my keen eye for design and extensive knowledge of the real estate market with my husband’s expertise in crafting custom homes, we offer a one-of-a-kind service. Whether you’re looking to buy, sell, or build a home, we are committed to making your real estate dreams a reality.
Our Commitment:
At the heart of our business is a commitment to you. We understand that buying or selling a home is one of the most significant decisions you'll make, and we are dedicated to guiding you every step of the way. Our goal is to not only meet your expectations but exceed them, delivering a seamless and enjoyable experience tailored to your unique needs.
Get in Touch:
I am truly excited about this new chapter and the opportunity to serve the vibrant communities of Breckenridge and Summit County. Whether you’re searching for the perfect home, envisioning a custom-built masterpiece, or selling your property, I am here to assist you. Let’s embark on this journey together and turn your real estate dreams into reality.


Located just 30 minutes northwest of Denver, Boulder is ideally situated where the Colorado plains meet the Rocky Mountains. This tech-savvy community with a small-town feel is characterized by the Boulder Flatirons, whose jagged peaks majestically rise above the city, and the healthy, adventure-loving residents who call this piece of paradise, home. Situated at 5,430 feet above sea level, Boulder enjoys a moderate climate and more than 300 days of sunshine per year. Outdoor enthusiasts can hike, bike, or stroll among Boulder’s 300 miles of trails and 45,000 acres of open space, then people-watch at one of many outdoor cafés and restaurants located along Boulder’s pedestrian-friendly Pearl Street. A mecca for tech startups and innovators, Boulder plays host to a variety of intellectually stimulating experiences, including venture accelerator programs and TEDxBoulder. Home to the University of Colorado, one of the most vibrant college campuses in the country, and considered one of the top research universities in the world, Boulder is a haven for both students and professors seeking to live the Colorado lifestyle. Residences of all styles and price ranges are found in Boulder, from modern lofts and condos to family homes and luxury estates, to historic properties and new developments. Boulder living offers something for everyone.
LIV Sotheby’s International Realty is Colorado's leading luxury real estate firm. Contact one of our broker professionals today to learn more about Boulder real estate opportunities.
3 listings
  • Detached House in Evergreen, Jefferson County
    € 2,980,000
    494 m² 6 5
    Presented by Maggi Costello | LIV Sotheby's International Realty
  • Land in Berthoud, Larimer County
    € 3,435,700
    142,651 m² 4 3
    Presented by Maggi Costello | LIV Sotheby's International Realty
  • Detached House in Estes Park, Larimer County
    € 1,146,200
    283 m² 3 4
    Presented by Maggi Costello | LIV Sotheby's International Realty