Since 2005, Southern Modular Industries, a leading modular building manufacturer, has been providing clients with high qualit ... y, fully customized modular buildings designed to their exact specifications. We’ve grown as a portable building manufacturer by developing permanent and relocatable modular buildings for a wide range of applications and industries, including commercial, education, government, medical, and specialty markets. Southern Modular Industries boasts over 200,000 sq. ft. of manufacturing facilities, and we have offices located in Houston, Texas and Perris, California. This allows us to work with distributors and dealers in 15 states across the country to provide end-users with code-compliant, wholesale modular buildings that meet the highest quality standards. We have a highly qualified team of associates who can custom design and manufacture buildings to meet your unique needs. Our average employee has 12 years of experience in the modular building industry. Southern Modular Industries is a proud member of the Modular Building Institute. read more