Our heritage began with the founding of Mason-McDuffie Real Estate in 1887. Generations of San Francisco Bay Area residents have relied on the service, integrity and proven ability of our real estate specialists.

Joseph Mason founded the company, opening a one-man real estate and insurance business with offices in Berkeley and San Francisco. After Duncan McDuffie joined Mr. Mason in 1905, the company pioneered the "planned unit development" concept, creating the beautiful Claremont, Northbrae and St. Francis Wood residence parks. Utilizing the talents of such distinguished local architects as John Galen Howard, Henry Gutterson, and the firm of Omstead Brothers, Mason-McDuffie garnered awards and national attention for their innovative use of green belts, contoured roads and underground utilities.

In 1997, Mason-McDuffie joined the Prudential Real Estate Network, and in 2010, transitioned back to its roots as Mason-McDuffie, aligned with Better Homes and Gardens Real Estate. The company is 19th largest real estate services firm in the nation, Number One in the East Bay, and third overall throughout the entire Bay Area.

Wine Country Group Realtors traces its roots back to the founding of Sonoma Properties, Inc. in Santa Rosa and Sonoma in 1972. In a similar vein to Mason McDuffie, but years later, founder Henry Mayo built subdivisions and office buildings in these communities where he lived. The firm also eventually joined the Prudential Real Estate Network and later became a licensee to Frank Howard Allen Realtors.

The Wine Country Group was adopted as a brand for the firm in 1997 and is recognized as a leading real estate company in the North Bay. With locations throughout the area, Wine Country Group Realtors is the only independently owned real estate firm representing properties across the broad Northern California Wine Country region.