Est. 1960 — Contra Costa County
Residential property management and real estate services from a third-generation local family.
We manage over 130 residential properties across Contra Costa County—single-family homes, condos, and small apartment buildings. Whether you're a local landlord or managing from out of state, we handle the day-to-day so you don't have to.
Management fee: 7% of monthly rent. No hidden costs.
(925) 580-9337Our agents help buyers and sellers navigate the Contra Costa market. With decades of local knowledge and a full-time commitment to every transaction, we handle pricing, negotiation, inspections, and escrow from start to finish.
(925) 580-9337
Properties we manage across Concord, Clayton, Walnut Creek, and surrounding communities.
Donald Rath Sr. opened Rath Realty on Clayton Road in 1960. Three generations later, his family is still here—managing homes, helping families buy and sell, and looking after the community they grew up in.
Broker / Owner
Third-generation Contra Costa real estate professional. Licensed since 1993, broker since 2004. Founded Mount Diablo Realty in 2003.
DRE #01151157
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Realtor / Partner
Contra Costa County resident since 1984. Licensed since 2004. Background in operations management at Nordstrom before transitioning to real estate.
DRE #01423444
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Realtor
Lifelong Contra Costa County resident. Licensed since 1994. Started at Rath Realtors before joining Mount Diablo Realty in 2010.
DRE #01187191
Full bio →“The day we asked Mt. Diablo Property Management to manage our rental property in Walnut Creek is the day all of our problems as a landlord ended.
— Michael & Karen Angel
“Lana, Raquel, and the team have exceeded all of my expectations. I would genuinely recommend them to any landlord.
— Glen Carter
“Team Mount Diablo is fantastic. Lana and Raquel have a client for life with me.
— Esa & Laura
Concord · Clayton · Brentwood · Walnut Creek · Antioch · Martinez · Oakley · and surrounding areas