Built in 1899 for the Oliver P. Posey family, the Doheny family occupied the home for nearly sixty years.  The three-story mansion was designed by architects Theodore A. Eisen and Sumner P. Hunt with elements from the Gothic, Chateauesque, Moorish, and California Mission styles.  Now part of the Mount St. Mary’s College downtown campus, the structure is a Designated Historic-Cultural Monument for the City of Los Angeles.  Historic Resources Group retained SGH to prepare the building enclosure, materials conservation, and waterproofing portions of their report for the Doheny Mansion.