100 Montgomery (formerly 120 Montgomery) was originally designed by Wilbur D. Peugh to serve as the headquarters for Equitable Life Insurance. Constructed in 1955, the twenty-five story office building is considered a historically-significant structure in downtown San Francisco and is distinguished by its white marble facade and Art Deco window framing. SGH was retained to perform a condition assessment of the exterior enclosure as part of a pre-purchase survey. It was during this survey that we noted distress to the marble panels. The owner retained the property and hired SGH to determine the cause of the panel cracks and develop repair options.