Caroline Sebastiani is one of the most accomplished luxury real estate agents in Sonoma Valley and the agent behind the highest-priced residential sale in Sonoma County history—a record-setting $35 million transaction completed in 2010.
With more than $1 billion in career sales and over two decades of experience representing luxury estates, vineyard properties, ranches, and legacy compounds, Caroline is widely regarded as one of the leading luxury real estate advisors in Wine Country.
Since joining Sotheby's International Realty in 2004, Caroline has specialized in Sonoma Valley luxury real estate, with particular expertise in Eastside Sonoma estates, vineyard properties, equestrian compounds, ranches, and ultra-high-end residential properties. Her clients include entrepreneurs, executives, investors, and multi-generational families seeking exceptional representation in Sonoma County's most coveted locations.
Caroline's record of achievement spans decades. In addition to the $35 million Sonoma County record sale, her notable transactions include Sonoma's highest residential sale of 2023 at $14.75 million, a $26 million off-market transaction in 2025, numerous sales exceeding $10 million, and more than $1 billion in lifetime sales volume.
Her active luxury portfolio regularly represents some of Sonoma Valley's most significant offerings, including estate properties, vineyards, ranches, and off-market opportunities unavailable through traditional channels.
Known for her discretion, negotiation expertise, and unparalleled network, Caroline has become the trusted advisor for buyers and sellers of Sonoma Valley luxury real estate. Her deep relationships throughout Sonoma Valley, Napa Valley, San Francisco, Silicon Valley, and the broader luxury real estate community frequently allow her clients access to opportunities before they become publicly available.
Buyers and sellers searching for a top Sonoma real estate agent, Sonoma luxury real estate specialist, Sonoma vineyard property expert, Eastside Sonoma specialist, or advisor for luxury Wine Country estates consistently turn to Caroline for her market knowledge, strategic guidance, and proven results.
A longtime Sonoma Valley resident, Caroline lives with her husband Jonathan and their family and remains deeply involved in the community she serves. Her connection to Sonoma extends beyond real estate—it is home.
Highest Residential Sale in Sonoma County History. Over $1 Billion in Career Sales. Sonoma Valley Luxury Real Estate Since 2004
Home Types:
House, Condo, Townhouse, Lot/Land, MultiFamily
Years of Experience:
23
