Disclaimer

Not legal or engineering advice

Guides on this site explain retaining walls in general terms. They are not legal advice, engineering advice or a substitute for a site visit. We never judge whether a specific wall is safe. Walls that hold up a driveway, a building, a slope or another wall should be evaluated and designed by a licensed engineer.

Costs

Prices are ranges from the sources we name, including Angi’s San Francisco data (Angi), HomeGuide and public permit valuations. Your quote can land below or above them.

Permit rules

Permit summaries come from the City of Walnut Creek, the Town of Danville, the City of Lafayette, the City of Orinda, the Town of Moraga and Contra Costa County, as linked on each page and checked in October 2026. The agency’s current rules control.

Referral disclosure

Walnut Creek Retaining Walls is an independent website that connects homeowners with local retaining wall contractors. We are not a contractor; contractors may pay us for project requests. We don’t endorse or guarantee any contractor. Verify any license at cslb.ca.gov.

Images

Photos show typical retaining wall situations and materials in East Bay settings. They are not photos of any particular contractor’s projects.