Stephanie Cook is the Founder and Broker-Owner of Mammoth Realty Group, a locally owned brokerage built on hands-on service, strategic marketing, and exceptional negotiation. Under her leadership, Mammoth Realty Group has remained a top-producing brokerage year after year, earning a reputation for professionalism, accountability, and consistent results. A full-time, top-producing broker, Stephanie is directly involved in every transaction from start to finish. Her clients value her clear communication, deep market knowledge, and confident guidance throughout the buying and selling process. Known for her ability to navigate complex and high-value transactions, she provides steady leadership and trusted representation in every market condition. Stephanie's long-standing relationships with developers, lenders, escrow officers, and local professionals give her clients a distinct advantage, particularly in competitive situations and new development opportunities. Whether working with first-time buyers, second-home owners, or seasoned investors, her focus remains the same: maximize value and deliver exceptional outcomes. Widely respected for her experience, consistency, and leadership, Stephanie Cook continues to set the standard as a Top-Producing, Full-Time Broker in Mammoth Lakes and is a trusted advisor to clients seeking expert representation in this unique mountain market.
Read More About Stephanie
Credentials
LICENSE
Real Estate - California - # 01160822
Designation
Real Estate Investing
CRS (Certified Residential Specialist)
SFR (Short Sales & Foreclosure Resource)
Seniors Real Estate Specialist
Top Producer
Seller Representative Specialist
Licensed Realtor
Real Estate Broker
Military Relocation Professional
REALTOR
Specialties
Buyers
Sellers
Residential Property
Commercial Property
Awards
2026
TOP AGENT
Mammoth Lakes, CA
View All Awards
Contact Information
Location
501 Old Mammoth RoadMammoth Lakes, CA, 93546
Social Media
More Agents Near You
Loading recent sales...
Stephanie Cook's Reviews & Ratings
48 Reviews
(5/5)
Note: Reviews may include other agents on their team
What clients say about this agent....
Knowledgeable
Communicative
Professional
Responsive
Outstanding
Trustworthy
Attentive
CS
Review for Member: Stephanie Cook
December 23, 2025
Stephanie is an outstanding negotiator. In a competitive situation, she remained calm, strategic, and focused on protecting our interests. Her experience showed in how she structured the offer and guided us through counteroffers. We always felt informed and supported. If you want a broker who truly knows how to get results in Mammoth Lakes, Stephanie is the one.
AC
Review for Member: Stephanie Cook
December 22, 2025
Stephanie helped us purchase an investment property in Mammoth Lakes and brought incredible insight into rental potential, location, and resale value. She understands this market at a deep level and knows how to evaluate opportunities beyond just the listing details. Her experience made us feel confident in our decision, and the transaction was handled seamlessly. Highly recommend for anyone considering an investment purchase.
KC
Review for Member: Stephanie Cook
December 21, 2025
Stephanie was always available, responsive, and proactive. We never felt rushed or left guessing. Her communication alone sets her apart from other agents.
JS
Review for Member: Stephanie Cook
December 21, 2025
Stephanie's expertise in luxury and ski-area properties is exceptional. She understands value, timing, and buyer behavior better than anyone we interviewed.
RJ
Review for Member: Stephanie Cook
December 21, 2025
Stephanie's pricing strategy and marketing approach were spot on. She guided us through preparing our home, positioning it correctly in the market, and negotiating confidently with buyers. Her communication was clear, honest, and consistent throughout the entire sale. We trusted her judgment completely and were thrilled with the final result. Stephanie is a true professional and a strong advocate for her clients.