On September 1, 2004, the County of San Mateo contracted with Architectural Resources Group (ARG) to prepare a Master Plan for the Sánchez Adobe Historical Site on Linda Mar Boulevard in Pacifica, California. The Sánchez Adobe Historical Site is an important historic resource with exceptional significance to the state of California. It has tremendous potential as an educational and recreational site for the residents of San Mateo County and beyond. Currently although the site is well maintained and preserved, it is underutilized both in visitation and in conveying interpretive information to the visitors. The development of this master plan is an important step in the integrated preservation, interpretation, and improvement of the site to better promote its importance while assuring its appreciation by future generations.