Dean Sumer

Dean Sumer

REALTOR® / Broker Associate / Sales Manager at Greenbox Realty
CA: 01526589CA: 01904772
  •   5   (3 reviews)

About Dean

Mr. Sumer joined Greenbox Realty in 2011 and is uniquely qualified to serve the buyer, seller, investor, and developer. Mr. Sumer served at the Builder Division of a major bank's Home Mortgage operation, introducing builders and developers to financing programs. Mr. Sumer is a California Real Estate Broker, and has worked in both residential and commercial real estate as well as over ten years of experience with Appraisal Matters, the number one ranked California real estate appraisal organization for many years (per a la mode, inc.®), valuing real estate serving lenders, estate planning and bankruptcy attorneys, homebuilders and assessment appeal clients, hedge fund lenders, and insurance companies. In addition, Mr. Sumer serves the investor community as a Stockbroker, Investment Advisor Representative, after many years of experience at several major stock brokerages, as a Project Manager, Broker-Trainer, and Client Transition Branch Manager. Mr. Sumer holds a bachelor’s degree in Economics from Southern Illinois University Carbondale. In addition, Mr. Sumer has taught personal financial management courses in Naval Base Ventura County’s (NBVC) “A” School via San Diego Community College District. Greenbox Realty is an approved vendor for the United States government and also serves under-represented areas and can be accessed with the HUDHomestore website. Just search for a property. Then search for a broker. Enter the city Thousand Oaks in the search to find Greenbox Realty. Greenbox Realty is a United States Government approved contractor. As a vendor to the United States government, our role is to review submitted purchase contracts.

Dean's reviews

  5  
Dean has 3 reviewsacross 2 different locations, showing 3.
Review Dean
over 4 years ago
Amazing experience and unparalleled negotiation skills!

Dean goes above and beyond! Kept us informed every step of the way and in this market we are able to get a home for way under asking price thanks to his negotiation skills and market knowledge! Thank you

over 4 years ago
The realtor I trust most

Dean is an experienced, knowledgeable and most importantly a reliable person. He helped me searching the best condo for me. Also he helped me on finding the best mortgage available. I don't worry about for a better option when I work with him since he always provides the best opportunities for my budget and needs. I recommend Dean to my friends and and anyone who is looking for a reliable realtor.

over 4 years ago
Excellent customer service and one of the most knowledgeable brokers in the area

Excellent customer service and one of the most knowledgeable brokers in the area. Definitely the best! We used Greenbox Realty for our purchase!. Closing in record times our purchase closed in 10 days. They informed us every step of the way kept us up to date and made this process seamless!! Dean does an amazing job with transparent communication and unparalleled negotiating skills!!!

Dean's properties

Dean has sold 3 properties in the last 12 months, showing 3, sorted by most recent activity

SoldApr 1, 2026
$565,000
3100 N Ventura Rd
Oxnard CA 93036
2
2
2
Condo
Listing courtesy of Realty ONE Group Summit and Greenbox Realty
SoldDec 1, 2025
$335,000
L-2/865 South B Street
Oxnard CA 93030
1
1
2
Condo
Listing courtesy of Keller Williams West Ventura County and Greenbox Realty
SoldJun 10, 2025
$1,099,000
734 Balden Lane
Fillmore CA 93015
6
4
2
Single-Family
Listing courtesy of eXp Realty of California Inc and Greenbox Realty
Show all 3 properties
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