CalBRE# 01221013

Daniel has been long recognized as one of both Sonoma Valley and Sonoma County’s Top Producing agents. Part of his success is that he represents all price points within the market and quite often represents as many buyers as sellers.

NRT ranks Daniel in the top 1% of over 42,000 esteemed sales associates. The Wall Street Journal names Casabonne as one of the "Top 200 Agents" in the United States and the Luxury Marketing Council named him one of the "Top 50 Agents" in the Bay Area.

Most of Daniel’s new clients are referrals from past clients. He treats his clients like family because he sees the relationship as long term…it is not just about the current transaction, it is about future business.

Since becoming a real estate agent, he has had the opportunity to help many buyers and sellers and this has lead to many industry awards and designations…


  • “Top half of 1% of All Real Estate Agents Nationwide” according to “The Thousand” ranking by the Wall Street Journal

  • “Highest Producing Agent North of the Golden Gate”

  • “Most Homes Sold in Sonoma Valley” Since 2002

  • “Top Producer” Since 2002

  • “Most Homes Sold” for offices in Sonoma, Napa, Marin, and San Francisco Counties Since 2003

  • Sonoma County’s Highest producing agent in dollar volume since 2010

  • “Best Realtor in Sonoma Valley” KVON 1440 AM & 99.3 FM The Vine Annual Survey

  • Ranked 39 in The Leading 100 “Top Performers In Bay Area Real Estate”

Sotheby’s International Realty®

The Sotheby’s International Realty network provides access to luxury real estate and homes for sale worldwide. Founded in 1976, Sotheby’s International Realty is a unique luxury network of brokerage agencies offering a wide collection of luxury homes, estates and properties for sale throughout the world. With more than 670 offices and 13,000 sales associates across 49 countries and territories, the Sotheby’s International Realty network is committed to helping its clients find a home and luxury real estate agent in the world’s most desired locations. Our purpose is to artfully unite extraordinary properties with extraordinary lives – servicing the needs of the most prestigious clientele in the world.

Wine Country Brokerage

Just a hour north of San Francisco, Daniel’s office is located in the beautiful and historical town of Sonoma beside the historic Plaza.   Sotheby’s International Realty® Wine Country Brokerage specializes in all aspects of wine country property including fine homes, vineyards, ranches, and vacation properties. Covering regions north of the Golden Gate Bridge, the office focuses on Sonoma, Napa, Healdsburg, Russian River, the Sonoma Coast, Santa Rosa, and surrounding cities. California’s oldest wine-producing region, the area features Sonoma State Historic Park, the site of the Mission San Francisco de Solano, and even the birthplace of the California State flag.