Women-owned modular construction specialist DRV Modular Contractors Inc holds CSLB license #680131 with B and C-47 classifications, serving La Mesa and all of Southern California from Resmar Road in the 91941 ZIP. The firm's scope covers relocatable classrooms, portable medical clinics, guard shacks, and field office trailers — projects requiring the same municipal permitting expertise that The Permit Pro Consultant navigates for La Mesa building applications. Founded in 1985, DRV holds certified WOSB status (WBE #13110056), City of San Diego SLBE certification (#17DR1687), and Public Works Contractor Registration (PWCR #100000387), qualifying the company for federal, state, and local government contracts. Installations span public school districts, colleges, and commercial entities requiring crane-set modular units on engineered foundations. Seismic retrofit and ADA-compliant ramp construction extend the firm's work into structural compliance, a code-enforcement domain shared with hardscape contractors like STP Masonry on commercial site-access projects across La Mesa. Highest-tier projects involve multi-unit crane lifts positioning prefabricated modular buildings onto post-tensioned concrete foundations with steel-tie anchorage systems engineered to California Seismic Zone 4 specifications.