After a marathon meeting last Tuesday, Walnut Creek's City Council voted 4-1 to sign off on a plan to demolish the aging Walnut Creek Executive Park and replace it with 422 townhomes. The Mitchell Townhomes project includes 55 units reserved for low-income households and cleared its biggest local hurdle after more than five hours of public comment. Mayor Kevin Wilk cast the lone no vote, citing worries about traffic and the loss of business-zoned land.
Developer moves toward financing
Oakland-based Signature Development Group is now entering the financing phase after the council denied two appeals, according to reporting. The plan calls for tearing down roughly 11 office buildings, about 450,000 square feet in all, and replacing them with for-sale townhomes. The site was purchased in 2022 by California Capital & Investment Group for nearly $50 million. As reported by The Real Deal, company representatives say they are lining up debt and equity partners and could begin demolition next year.
How the council justified approval
City staff processed the application under the state's SB 330 "builder's remedy" rules after the developer filed its preliminary application shortly before Walnut Creek's housing element was certified. That timing significantly narrowed the council's legal options to deny the project, according to the City of Walnut Creek agenda and staff packet. Two appeals, filed by Friends of Walnut Creek and residents at the nearby Viamonte senior community, challenged the environmental review, traffic analysis and public noticing but were rejected. The council certified the project's Final Environmental Impact Report and approved entitlements on a 4-1 roll call.
Design, scale and timeline
The Mitchell Townhomes plan would spread 422 units across roughly 22 acres in the Shadelands Business Park, arranged as 82 three-story multiplex buildings with private garages and nearly 1,000 parking spaces, according to the Final EIR. Units are planned in the 1,280-to-2,160-square-foot range, with construction expected to run four to five years in two phases and early move-ins possible, as reported by SF YIMBY. The developer has also proposed two acres of shared open space and modest off-site traffic and safety improvements as voluntary community benefits.
Neighbors raise health and traffic concerns
Opponents zeroed in on construction risks for nearby residents, particularly those living at the Viamonte senior community. They raised alarms about fugitive dust, asbestos notification, tree removal and emergency access during demolition and building. Several speakers also argued that the long-term traffic impacts of swapping an office campus for 422 year-round households were understated in the EIR. In response, the council attached extra mitigation and notice conditions, including strengthened dust-control measures and additional construction fencing. Even so, opponents say they may seek other legal avenues, per reporting by ContraCosta News.
Part of a larger office-to-housing shift
The Mitchell project is part of a wider East Bay trend of converting underused suburban office parks into housing as post-pandemic demand for office space softens. Data highlighted by The Real Deal, citing CBRE analysis, estimates that roughly 15 percent of office space along the I-680 corridor could be repurposed by 2030 and that Shadelands' office inventory may shrink by about 35.8 percent, around 644,000 square feet. Planners say those shifts make projects like Mitchell a pragmatic way to meet state housing targets while reusing obsolete commercial land.
What happens next
With the Final EIR certified and entitlements approved, the applicant can now pursue demolition and building permits under the project's mitigation program. The Final EIR anticipates construction in two phases over four to five years, with the project team proposing staggered move-ins to reduce pressure on local services, as noted by SF YIMBY. City staff will monitor required mitigation during demolition and construction, while neighbors and local groups say they plan to keep a close eye on air-quality protections and traffic controls as work begins.
