• We always serve and protect your interests above all others to the very best of our ability.

  • We have a proven expertise to prepare our clients properties to show in their best possible light and generate the highest market response in order to attain the highest achievable sales price.

  • We implement a marketing plan of the highest quality and effectiveness in order to seize the attention and maximize the response of the buyer and broker communities.

  • We rigorously qualify prospective buyers.

  • We expertly and aggressively negotiate the purchase contract on your behalf in order to maximize your proceeds of sale.

  • We coordinate and manage every aspect of the sale transaction to minimize unpleasant surprises, delays in close of escrow, buyer attempts to renegotiate, and any and all future liability once the escrow is closed.

  • In everything we do, we shall work to minimize your stress, time and effort during the listing and sale processes, and bring everything to a successful conclusion.

  • We have superb client references.

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Peter Colbert is in the top 1% of all North Bay agents in sales per year selling over $200 million dollars’ worth of Wine Country properties over the past four years. His areas of expertise surround Healdsburg, Glen Ellen, Sonoma, St Helena, Calistoga, Sonoma Coast, Sebastopol, Occidental, Napa and parts of Marin. 

Peter’s extensive experience results in a comprehensive understanding of challenging projects such as wineries, second home projects and remodels, pool and patio installations and raw land purchases where well and septic tests rule the way. From the simple to the complicated purchase, Peter has seen it all. With a large network of professionals, Peter can make the most complicated transaction seamless. 

Peter has lived in the Wine Country for more than 25 years. He is a full-time Real Estate Associate and is a member of CAR, NAR, Norbar and Baries MLS. Having been raised in Lafayette when the East Bay was better known for acres of almond groves rather than housing developments, Peter has always been interested in how agriculture relates to good, healthy living. In the North Bay where Farm to Table has become a way of life, Peter and his wife, Pamela, chose to raise their family here. Peter currently lives in Santa Rosa with his wife and three children. Peter went to college in New England, where he met his bride. He and his family continue to enjoy their East Coast ties while visiting their summer home on the New England coast. 

Peter enjoys golfing and running and can also be found in the numerous fantastic wineries and restaurants in the North Bay. Deeply involved in the community, Peter is the President of an Elite Soccer Club and volunteers countless hours as an advocate and coach for youth sports.

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Mark Altes is a Broker Associate at Compass, a company that prides itself on bringing the best knowledge, experience, and service to Real Estate Investors World wide. By working side by side with his clients, he is able to help them make the best decisions for all of their Real Estate transactions, based on market data and past experience with Real Estate.  Born and Raised in the Wine Country is one of Marks biggest assets. 

With over 17 years’ experience in General Engineering Construction as well as General Construction the vast array of knowledge Mark brings to the table is unsurpassable.  Being involved in the development of large Estate projects, wineries, wine caves, commercial projects, horse arenas, pool construction, and sub-divisions is what gives him an edge.  This knowledge and understanding the systems involved in such Real Estate is an asset that leads to making educated decisions based off facts.   Along with that experience comes a team and network of connections that runs deep into the wine country.

Mark feels that there are two very important aspects to understanding a Real Estate transaction.  One, is understanding the piece of Real Estate with the inclusive facts.  The second, is “negotiating” through the deal making sure that all facts are accounted for.  While doing both of the above he keeps the client informed at all times so the transaction seems seamless. 

Mark works alongside his wife, Erika, who is well-versed in everything from sales to digital influencing and marketing. Mark volunteers for the California Waterfowl Association as well as being a member of the organization. Receiving an associates degree in Liberal Arts and Real Estate License Certificate from Santa Rosa Junior College, as well as holding a General Engineering Contractors License. He enjoys mountain biking, skiing, and taking in everything Sonoma County has to offer, whether it’s a local restaurant, winery, or beautiful sunset.   

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Dina Demko has extensive experience in buying and selling country estate properties in Sonoma Valley for over 12 years and understands all the intricacies of country property renovations including septic and well testing, vineyard development, subdivisions, 1031 Exchanges, and multi-family investment properties. She also developed an 8-acre vineyard of Syrah in Sonoma, negotiated its grape contracts, and has knowledge with agricultural pursuits in the Wine Country. 

Dina’s past experience includes working as a highly accomplished account executive closing multi-million dollar sales with Fortune 500 companies such as Gartner and Dun & Bradstreet and marketing experience with Clorox Co and Del Monte Foods. 

She loves to travel and recently had the rich experience of living in Florence, Italy for five years. There, she immersed herself in the Tuscan wine country culture studying the architecture, art history, cuisine, wine, language, and lifestyle. Now, she can use this knowledge to help clients find this lifestyle right here in California wine country. 

Dina was raised in San Mateo and moved to Sonoma 23 years ago. She holds an MBA from San Francisco State University. Growing up, she spent many summers at her grandparents’ ranch in Healdsburg, where they carried on many traditions from Northern Italy where they were from. They cured prosciutto, pressed olives, grew grapes, made wine and homemade pasta, and regularly cooked five course meals. Dina carries on many of these traditions at her property in Sonoma. An ideal weekend afternoon for her is spending time around the table with family and friends, cooking, enjoying local food and wine, and the surrounding countryside.

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Erika Altes was born and raised in Sonoma County. This has given her an opportunity to build an extensive network and form close relationships with local businesses and people. She became a licensed real estate agent in 2017 and is also a digital influencer. 

As a digital influencer, Erika has built a social media following of nearly 70,000 followers worldwide across Instagram, Facebook, and Pinterest. Erika understands that we live in a digital world and thus what better avenue to showcase Wine Country real estate than on such platforms. Her following has led to sales and interest since she is well connected in the local area and can influence her audience with the trust she’s gained and built over the years.

In addition to Erika’s marketing background she also has an extensive background in corporate sales. For 10 years, she was the Northern California sales representative for leading surf brands Quiksilver Inc. and Roxy. During her time there she was awarded sales representative of the year two times. Given her proven track record in sales, Erika shows she can drive sales and knows what it takes to get the deal done.

Erika is married to Mark Altes, who is also a local agent in Sonoma County. Mark has an extensive background in estate construction and development. With Erika’s marketing background and Mark’s expertise in real estate and development, they make for a dynamic and powerful team. Together they enjoy visiting their second home in Tahoe, entertaining guests, and traveling with their three-year-old son.

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About Heather

Heather Arnerich is the motivated and driven Assistant/Transaction Coordinator for the Wine Country Colbert Group. Heather is a part of the Selling & Buying process every step of the way, from scheduling inspections, helping with Marketing, and making sure all contracts and paperwork are completed properly and are compliant with the CA Bureau and Real Estate laws and regulations.

Her calm demeanor and efficient work ethic makes every transaction smooth and complete. Heather was born and raised in Pleasant Hill, CA, graduated from Sonoma State University, and now resides in Santa Rosa with her husband, two children, & sweet yellow Lab. She enjoys traveling, fashion, sports, food & all things wine.