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OMM Homes

OMM, INC., also known as Mason Management, has been in the real estate business since 1987. The company has represented properties in Alameda and the greater bay area in real estate sales, rentals and property management.

Effective January 1, 2019, OMM, INC. and Cerda Zein Real Estate Company have joined forces and will be known as OMM, a CERDA ZEIN REAL ESTATE COMPANY. Jose and Nancy Cerda Zein have been very successful Realtors since2003 and have been the owners of Cerda Zein Real Estate, a company that specializes in property management, leasing and sales for the past decade.

Combining the service models of both companies will be amazing for our property owners, our clients and tenants and of course, the community of Alameda. Our team is dedicated to providing the most comprehensive, customized, professional and personable service to our customers.

Ideally situated in the Central Business District of Alameda, the OMM Cerda Zein team will continue to serve our clients with dedication, communication, delight with the business and professional and friendly service. We are knowledgeable about our community and the neighborhoods in which we work.

The OMM Cerda Zein Real Estate Company leases and sells commercial and residential properties from single family homes, duplexes, and residential multi-units - to mixed-use properties and commercial office buildings. We are known for matching people with places and places with people.

The mission at our company is to provide the most professional, informative, loyal and ethical service to the public and we are dedicated to the development of long-term client relationships. We are known for our team approach to the management of your properties.

Please give us a call for all of your real estate needs. We offer service with a smile and are committed to your success.

Thank you for using our services and have a wonderful new year!

Jose Cerda Zein, Broker, 510-523-5673
Nancy Cerda Zein, Managing Partner, 510-295- 9528
Jan Mason, Director of OMM, 510-381-1573


I love Mason Management! If anything goes wrong with my apartment I call them and they're right there! I've never had such a responsive landlord!

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