The historic headquarters of the California State Association of Counties (CSAC), located at 1100 K Street in Sacramento, is set to undergo a significant renovation costing approximately $25 million. This extensive project aims to modernize the 115-year-old building by adding a new sixth floor, completely renovating the interior, and upgrading its seismic and accessibility features.
The total estimated cost for the overhaul is about $24.85 million. The construction will proceed in two phases: an initial demolition and abatement stage, followed by the main renovation and expansion. Detailed project documents outline allowances, contingencies, and a procurement schedule for design-assist construction services.
Project Details and Design
According to the Sacramento Business Journal, the renovation plans include about 3,172 square feet of new enclosed space on the sixth floor, designed specifically for conferences and events. The existing 21,954 square feet of the building will also see extensive reconfiguration, including a seismic retrofit and accessibility upgrades. The CSAC has indicated that the building will remain unoccupied during construction, requiring temporary relocation for staff and tenants.
Architectural sketches prepared by HGA aim to preserve the historic character of the building at street level while enhancing the upper stories with a brick veneer that reflects the original facade. The proposal maintains the existing exterior openings and primary facade while adding rooftop amenities that capitalize on views of the State Capitol.
Timeline and Community Impact
CSAC has been proactive in advancing this project, having uploaded materials and solicited design-assist bids by mid-2025. They began moving plans toward city review late in the year to ensure compliance with upcoming building code changes set for 2026. The project first became known to the public last summer, with coverage from local media highlighting its significance.
As the renovation progresses, residents in the Cathedral District can expect to see scaffolding, construction crews, and some disruption at street level. The CSAC’s initiative is part of a broader movement to modernize aging office spaces near the Capitol while maintaining historic structures. This approach combines preservation with the development of new meeting and event areas.
For those interested in further details, CSAC has made available the full request for proposals and schematic exhibits, providing comprehensive insights into the project’s scope, budget, and timeline.
