- Services Structural Engineering
- Market(s) Hospitality
Julia Morgan Award for Historic Restoration, Institute of Classical Architecture & Art Northern California Chapter, 2022
Preservation Design Award for Rehabilitation, California Preservation Foundation, 2018
1886year originally built
8thbest historic hotel in US
USA Today, 2021
9thbest historic hotel in US
USA Today, 2020
- Owner Richard and Dina Dwyer
- Architect Form+One Design
- Contractor Richard Dwyer
- Team San Francisco, CA
The restoration of the historic Francis House from the ashes and ruins following years of abandonment and neglect has transformed this former hospital into a boutique hotel in beautiful Calistoga, California.
Extensive fire damage had destroyed the interior timber structural framing leaving only the exterior built-up stone walls intact. As part of the historic renovation, KPFF developed a testing program to determine the lay-up of the stone walls along with strength properties for seismic resistance. The renovation strategy included an innovative approach to strengthening the walls by pressure grouting the collar joint in between the interior and exterior wythes followed by stitching the wythes together with stainless steel rods set in epoxy resin. The new floors and roof were independently constructed using structural steel framing with concrete fill over metal decking, and brace the exterior stone walls for out-of-plane seismic forces. Overall, the renovation proved to be minimally invasive and accomplished the historic preservation objectives without requiring additional augmentation or strengthening of the lateral system.
The only stone building in Calistoga, the Francis House is listed on the National Register of Historic Places.
Learn more about the Francis House here.