Soon after the Mexican–American War, the city was surveyed first by Thomas Campbell in 1847 and later by Chester Lyman, in 1848, following the standard grid street pattern utilizing traditional Spanish pathways. This street pattern has remained virtually unaltered to this day. The development of American commercial areas in San Jose extended into this newly surveyed area, just east of the original pueblo site of 1797. In the 1870s and mid-1880s, the heart of downtown commercial activity had moved northward along Market Street to the Santa Clara Street intersection. However, by the latter part of the 1880s, Santa Clara and First Streets became the new focus for downtown business activity. The early horse-drawn railway systems reinforced the importance of this intersection with single and, later, double tracks located along both streets. During this period, Italianate and Romanesque Revival styles dominated. This was a group of buildings designed by the finest local architects and built by the leading citizens of the time: James D. Phelan, F. Sourisseau, C. T. Ryland, Martin Murphy's descendants and the Auzerais family. Buildings such as the Knox-Goodrich Building at 34 South First Street, with its extreme rustication, reflect the qualities of the wealthy, orchard oriented, agricultural community of the turn-of-the-century. Following the 1906 San Francisco earthquake, Edwardian and Neoclassical commercial buildings replaced the damaged Victorian and Romanesque businesses. In addition, Mission Revival, California's first indigenous architecture, dominated smaller commercial architecture. Spanish Colonial Revival also provided California with a new historic architectural mode. During the 1930s, 1940s and 1950s, modernization and further consolidation characterized the downtown core. New growth patterns to the west and south of the center of the city changed the commercial desirability of the downtown core area of San Jose. New construction was virtually nonexistent until the government sponsored redevelopment programs of the 1960s began razing of entire center city blocks for planned new development.
Architectural landmarks
Late 19th-century buildings
Knox-Goodrich Building, 1889
La Rosa Pharmacy, 1870
Letitia Building, 1890
Oddfellows Building, 1883
Security Building, 1892
Early 20th century
Landmark Square, 1907
Bank of America building, 1926 – San Jose's first skyscraper, at fourteen stories