Seismic Retrofitting in Contra Costa County - State-Certified Contractor
DevCo Building Enterprises is an approved contractor for California's EBB (Earthquake Brace + Bolt), ESS (Earthquake Soft Story), and EMR (Earthquake Multi-Unit Retrofit) programs through the California Residential Mitigation Program (CRMP). We serve homeowners and property investors across Contra Costa and Alameda Counties. Residential retrofit projects typically cost $3,000 to $10,000; state program funding may cover a significant portion of eligible costs. Call (925) 448-2123 for a free seismic assessment.
Contra Costa County sits within the seismically active Bay Area, where major fault systems - including the Calaveras and Concord-Green Valley faults - run directly through densely populated communities. For homeowners with wood-frame houses built before 1980, and property investors with soft-story multi-unit buildings, earthquake retrofitting is the single most cost-effective structural improvement you can make to protect your investment and your family.
DevCo Building Enterprises is one of the few licensed general contractors in Contra Costa County certified across all three California residential mitigation programs - EBB, ESS, and EMR. That certification matters: it means DevCo can complete program-compliant retrofits that unlock state grant funding for eligible property owners.
California Seismic Retrofit Programs DevCo Is Approved For
According to the California Residential Mitigation Program, homes that have been seismically retrofitted sustain an average of 50 percent less structural damage in earthquakes than comparable unretrofitted homes (CRMP, crmp.org). In the 1994 Northridge earthquake, retrofitted wood-frame homes were 4 times less likely to be red-tagged than unretrofitted homes of the same type.
What Is a Cripple Wall and Why Does It Need Bracing?
A cripple wall is the short wood-framed wall between your home's foundation and the first floor. Homes built in Contra Costa County before 1980 often have unbraced cripple walls - one of the most common causes of home collapse or severe damage in California earthquakes.
The EBB retrofit process addresses this directly:
Foundation bolting: attaches the mudsill to the concrete foundation with anchor bolts
Cripple wall bracing: adds structural plywood sheathing to cripple wall panels
Inspection: city building inspector confirms work meets code requirements
Documentation: program-compliant photos and records filed with CRMP
A standard EBB retrofit for a single-family home in Concord or Walnut Creek typically takes 1 to 2 days and costs $3,000 to $6,000 before any grant funding is applied.
Seismic Retrofitting for Commercial and Multi-Unit Properties
DevCo works with commercial property owners and investment groups on seismic compliance and tenant improvement projects throughout Contra Costa County. If your building needs a soft-story retrofit, structural upgrade, or seismic compliance work ahead of a refinancing, sale, or city deadline, we can assess and quote it.
Soft-story retrofit for 2 to 12 unit residential buildings
Commercial tenant improvement with seismic components
Structural assessments with written report for lenders or city compliance
Full permit management from application to final sign-off
Frequently Asked Questions
Standard residential (EBB) retrofits run $3,000 to $10,000. Soft story retrofits for multi-unit buildings range from $10,000 to $60,000+. DevCo provides free assessments with detailed cost breakdowns. State program grants can offset significant portions of eligible costs.
EBB (Earthquake Brace + Bolt) is a California state grant program for wood-frame homes with cripple walls. Eligibility depends on your ZIP code, home type, and the program's enrollment period. Many Contra Costa ZIP codes are eligible. Visit crmptools.org/pages/ebb or call DevCo for a quick eligibility check.
Mandatory ordinances are not in place across most of Contra Costa County for single-family homes. Some multi-unit property owners may face city or lender requirements. Voluntary retrofits are strongly recommended for pre-1980 wood-frame homes near active fault zones - the Calaveras and Concord-Green Valley faults cross directly through the county.
Yes. All seismic retrofit work requires a building permit, and DevCo handles the full permit process including application, plan submission, city coordination, and final inspection scheduling.
Get a Free Seismic Assessment
Serving Concord, Walnut Creek, Martinez, Lafayette, Orinda, Pleasant Hill, Clayton, and surrounding Contra Costa and Alameda County communities.
Call (925) 448-2123 or request your free assessment at devco.llc/contact.