San Francisco City Hall

Historic restoration & Quintek system cleaning of marble, granite and terracotta performed under the oversight of the San Francisco Historic Preservation Committee and City of San Francisco. Removal and reinstallation of thousands of square feet of interior and exterior cladding, coping and paving including a detailed catalogue, documentation and salvage process in order to preserve the historical and functional integrity of thousands of individual pieces that were reinstalled two years after their removal. Carrara also designed and re-engineered structural anchorage in order to satisfy the new seismic requirements per the California Building Code.

Location / Region

San Francisco, CA

Date Completed



Huber, Hunt & Nichols

Services Provided

Cubic Stonework, Design Build/ Design Assist, Historical Stone Restoration, Historical Terracotta Restoration, Mechanically Fastened Stone, Seismic Retrofit