Welcome to Sonoma
Welcome to Sonoma
Find the home of your dreams

Welcome to the Wine Country

Thank you for taking the time to stop by my website. Recently my beloved Sonoma County, along with neighboring Napa and Lake counties, experienced a disastrous wildfire. I have many friends, clients and colleagues who lost their homes but all are recovering and most are rebuilding. There has been a lot of loss but this county is strong, resilient and rich in community. Amazingly, we have pulled together and helped one another in an unprecedented way.  I am so proud to be a resident of Sonoma. Come visit us!

From here you can search for property, get a market report of recently sold properties and even search for homes, condo's, farms, or land listings that are new on the market. If you are just beginning your search for a home, or looking for a wine country weekender or planning to sell, I'd be happy to help you. Call me for a free market analysis to determine your home value. In partnership, we will work together on this!

I have been named Top Producer for Century 21 Wine Country for 2014, 2015 and 2016.  And in 2015 and 2016 also Top Producer for both listing transactions and buyer's transactions. I've received the Centurion Award, President's Award as well as the prestigious Quality Service Pinnacle Award. I have been the recipient of Masters Awards since 2010 with consistent Quality Service recognition. It is not all work because I have fun with my clients and we celebrate every time we cross the finish line. 

I am in the trenches of the industry daily and have earned the CDPE designation (Certified Distressed Property Expert). I have also received the BPOR credential (Broker's Price Opinion Resource) which ensures I accurately price your house to sell. I love working with people and have a lot of experience and expertise at helping clients with their real estate needs. I keep a positive, grounded approach to ensure successful outcomes for my clients. Take a look at my testimonials if you want to see what my clients say about my work.

Have a great day and I look forward to hearing from you!

-Marguerita Castanera, REALTOR®


For Sellers

Thinking about selling your home? Want to see how much your property is currently worth? Click below to learn more about the home selling process.

Sellers Info

For Buyers

Looking for the perfect property? Want to learn more about the home buying process? Use the link below to gather information about buying real estate.

Buyers Info

Client Testimonials

I love working with buyers and sellers alike, and their referrals are a very important part of my business. Here are a few testimonials from past clients! 

Client Testimonials

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