12995 Steiner Rd


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11295 Steiner Rd  |  Plymouth, CA 95669

Set amongst the Sierra Foothills vineyards in the Shenandoah Valley this tranquil estate offers 5 Bedrooms, 5.5 Baths and is the epitome of Wine Country living. The property offers a 1 bedroom, 1 bath, guest cottage set amongst the Oaks and Pines.  Meticulously manicured grounds offer a walk path encircling the entire estate, a pool, as well as a large conditioned hobby/winemaking shop.  All of this just steps away from several local Wineries.  Centrally located just 2 hours from San Francisco and 2 hours from South Lake Tahoe.

5 Beds   |   5.5 Baths  l   4,983 +/- sq. ft.  l  8.13 +/- acres  

Offered at $1,450,000





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CALBRE#: 1703429

MOBILE: (415) 798-0203

CALBRE#: 01719069

MOBILE : (707) 235-3249


Mark Altes is a Broker Associate at Sotheby’s International, 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.   

Marks favorite quote-

“Ninety percent of all millionaires become so through owning real estate”

Andrew Carnegie



Peter Colbert is in the top 1% of all North Bay agents in sales per year selling over $100 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.