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Dennis Cox

Mammoth Realty Group

Dennis Cox

Broker Associate

[email protected] | (760) 920-0878

I grew up in southern California and was heavily involved with music. At UCLA I played French horn in a wind ensemble and keyboard in a rock band, The Sliverbritches…maybe you’ve heard of us? Probably not. I studied mechanical engineering and squeaked out in 5 years. I went on to work for Fluor Daniel, an international engineering company based in Orange County, CA. Then I worked for Qwest Communications in Denver, CO, where I fell in love with the mountains. I then left the engineering field to attend UC Berkeley and get an MBA. I got to travel to Costa Rica to introduce technology to organic coffee farmers in hopes of helping them better manage their plantations. I also was on the winning team for the $10,000 Elite Eight Marketing Challenge for which we researched teenagers’ opinions on “Go-Gurt” portable yogurt and presented recommendations to its makers.From Berkeley, I headed south again to get married (my wife’s name is also Tara) and take a job with Intrawest in Mammoth Lakes, CA. Shortly thereafter I got my real estate license and have been practicing real estate full-time ever since. I feel like I found my calling. I love the contact with a broad range of people and helping them find the perfect place to enjoy the mountains. On the side, I am involved with Young Life (nondenominational outreach ministry for teenagers), Mammoth Christian Fellowship, and playing music in the Eastern Sierra Chamber Orchestra and in the Sierra Summer Festival. My wife and I enjoy being parents and, when we have time, enjoy skiing, snowboarding, hiking, running, and volleyball. We have three daughters who help us look at life through kids’ eyes again.

Eric Van Winkle

Mammoth Realty Group

Eric Van Winkle

Realtor Associate

[email protected] | (760) 709-6319

I was born and raised in Orange County. Some of my best childhood memories were visiting my grandparents in the Eastern Sierras (in Walker 70 miles north of Mammoth). I am blessed by the love and support of my wife and four children. Our three oldest children are independent and making headway into their adult lives. Our youngest son attends Mammoth High School. After a lifetime living in Southern California, my wife, youngest son, and I came to Mammoth for a weekend getaway to escape the 100+ degree temperatures. This trip opened the doors to our relocation to Mammoth 3 months later. After 7 years, we still pinch ourselves about how wonderful it is to live and work in this majestic location. My entire working career has been about serving others. I have been a fire fighter and engaged in some aspect of customer service for over 30 years. I worked in the grocery business, Nordstrom, fire departments, and ran my own business as an RV component sales representative. I know how to provide top-level customer service and I am able to provide that to people wanting to find their mountain home. As my wife and I say there is never a bad day in Mammoth just look up to the mountains. We are avid downhill and Nordic skiers in the winter and enjoy RV camping, backpacking, hiking and road biking in the summers. We are active members of Mammoth Christian Fellowship. I have a fresh outlook on living and playing in the Eastern Sierras and can help you find your ideal primary or vacation home.

Read Our Reviews

Eric is AWESOME !!

Eric Van Winkle was unbelievably patient with our family as we navigated the crazy COVID market in Mammoth. He was professional 100% of the time and quick to answer any and all questions and when asked for an opinion, would offer a heart felt answer. We continue to ask him questions even two months after closing that he promptly responds kindly and again quickly and professionally. Do yourself a favor and secure Eric as your realtor!


Eric Van Winkle was exceptional to work with when purchasing our condo. He was very professional throughout the buying process, having our best interest at the forefront. He was available to answer any questions and he responded quickly. When we hit some unexpected challenges with our loan, he was calm and helpful while guiding us through the situation. We will definitely use Eric with our next purchase and highly recommend him!

Vacation rental property -- great job!

Eric did an amazing job of working with me to help me find the perfect property in Mammoth! In an incredibly competitive market, Eric helped us move fast and walked me through every step of the process. We even closed early during the holidays! I wouldn't hesitate to work with Eric again, or recommend him to anyone looking for property in Mammoth.

We had the best experience

We had the best experience with Eric and Dennis. I thought buying a condo when I did not live locally would be a challenge. However, with Eric and Dennis, it was seamless! They were incredibly helpful throughout the entire process. They went the extra step...and then some more!! I would highly highly highly recommend.

Thank you!

We are happy to recommend Dennis Cox and Eric Van Winkle for all of your real estate needs. From day one as we went through the experience of purchasing a condo, they made themselves available with both impressive expertise and patience. We felt supported and we appreciated the rapport that they created with our family. They are professionals we trusted as each “ next step” of the purchase unfolded , it was transparent and clearly explained. When there was a concern or an issue, they listened and negotiated on our behalf. Dennis Cox and Eric Van Winkle demonstrate integrity. They care about the families they work with and do their very best to make sure the sale is a good fit. Our community is fortunate to have these gentlemen. Many thanks! The Vanko Family

First Class

Eric and Dennis are first class. Easy to work with and they get things done. Unsurpassed local knowledge and connections. A real pleasure working with them.

Excellent experience buying a condo!

Dennis and Eric were a great team to work with us on finding the place of our dreams in Mammoth! During the journey of looking at what feels a million places, they showed a lot of patience and their expertise was what helped us to sort through the options. Getting the deal closed felt easy with them behind us. The process was very streamlined- very impressive how they held to the schedule to sign off items to get us closer to the deadline. Whether it was following up with the seller's team, getting us HOA info or just basics on Mammoth specific things we never paid attention to while only vacationing... I would recommend them to everybody looking for a place!

Five Star Review

When i started looking up north for an investment property it was just me looking for an agent. Some friends recommended Dennis Cox and that's how this all began a couple years ago. Well life changed things over the next couple years and I needed a partner and apparently Dennis did to. So when Brent and I finally started looking we met Eric. This all worked out great with Eric out front with us and Dennis running the show from his office. Great guys both, easy to work with and very professional at the same time. Brent and I were able to find the place we wanted while getting the best bang for our buck. Thank you very much, looking forward to working with you in the future! Robert Roncal

Eric van Winkle and Dennis Cox helped us buy our dream home!

My family and I had a wonderful experience working with Eric and Dennis on the purchase of a cabin near Mammoth. They were extremely diligent, thoughtful and hardworking, and as a result we closed our purchase very quickly. Thank you Eric and Dennis!

So thankful for the help and attention to detail

So thankful for the help and attention to detail in the purchase of our new home in Mammoth!! Eric and Dennis were on top of everything (and trust me, there was a lot to be on top of!!) from the first showing through closing. I highly recommend them if you are looking to buy in the Mammoth area! Thanks, guys!!! I'm looking forward to being your neighbors!

Eric was absolutely amazing!

I can’t say enough good things about working with Eric from start to finish. He was very attentive to our very specific type of property we were looking for and any time a property came on the market that was a contender he was there the same day taking videos, photos, and all sorts of details down for us. He made the house shopping process fun and easy and once we found the right one he was there every step of the way during escrow. Even after closing he helped us move out some of the seller’s old furniture and hauled it off for us!

Great People and Amazing Service

My wife and I have had the opportunity to work with Eric and Dennis two times in Mammoth Lakes. They are always eager to help and very thorough throughout the process. Each time I am able to tell them what I want and they find it ASAP. It has been a pleasure and I’m sure we will be back.

"Always ready to answer my questions"

Eric is a Service-oriented agent, ready to help and get answers to any questions you may have and ready to suggest service providers as needed.

Thank you so much for your guidance and expertise in helping us to buy our dream home.

I am so grateful for your hard work and patience with all our questions at every step of the process. I genuinely trusted that you were looking out for our best interests and had our backs throughout this exciting and stressful process. Andrew&Cara

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