Our passion for historic renovation is apparent not only in the completed work, but fundamentally in our approach. Through our renovation experience of more than 550 structures, we have found that the best solution is reached through communication, research, a comprehensive understanding of the existing structural system, and a high level of sensitivity to the historic fabric and cultural context. We employ proven, established methods of preservation, as well as innovative technologies to carefully protect the historic integrity of the building. Our ultimate goal is to use the least-disruptive, most sustainable methods possible to maintain, enhance, and preserve the historic character of the project.

HISTORIC RENOVATION EXPERTS

Lincoln Hall, Portland State University, Portland, OR (1911)Originally Lincoln High School, the building was the first structure to be incorporated into PSU’s campus. KPFF’s seismic retrofit included the use of Buckling Restrained Braced Frames, which reduced the number of required braces by half.

Paradise Inn, Mt. Rainier National Park, Paradise, WA (1916) A new post-tensioned concrete lateral system was carefully concealed within the original historic fabric to restore this National Historic Landmark to its original grandeur.

Alexander Hamilton U.S. Customs House, New York, NY (1907)KPFF has performed progressive seismic blast studies, innovative seismic upgrades and historic renovations on over 40 U.S. federal buildings.

Pioneer Courthouse, Portland, OR (1869-1875)Complete renovation and seismic strengthening of the oldest standing federal courthouse west of the Mississippi. KPFF utilized a base isolation system to reduce the seismic demand and preserve the historic architectural finishes.

At KPFF, we strive to be more than consultants. Here, we are partners with our project teams, collaboratively pushing the boundaries and elevating the work we do in a constant pursuit of excellence. We are comprised of structural & civil engineers, who thrive on designing innovative solutions for projects of all scales. Our Portland office, established in 1974, has 100+ engineers that are collectively licensed in all 50 states.

Our award-winning portfolio spans six continents and over 250,000 projects.

EcoTrust Building, Portland, OR (1895)First Historic Renovation Project in the Nation to be LEED certified (Gold).

Galleria Building, Portland, OR (1908)On the National Register of Historic Places, the building was renovated to create a mixed-use development. Along with floor strengthening to resist new live loads, a full seismic upgrade utilized fluid viscous dampers, which were “tuned” to also protect the historic terra cotta facade.This type of design required a sophisticated analysis technique known as non-linear response history analysis.

Meier & Frank Building, Macy’s & The Nines, Portland, OR (1909) The utilization of viscous dampers to seismically upgrade the structure allowed for minimal reinforcement and ultimate preservation of the historic Terra Cotta facade.