F J Willert Contracting Co Inc in Chula Vista holds CSLB licenses #402473 (A — General Engineering) and #306433 (C-21 — Building Moving/Demolition), operating from Nirvana Avenue in the 91911 ZIP as one of Southern California's longest-running earthwork and demolition contractors. Large-scale grading and utility-trench projects require coordinated underground electrical conduit placement, a scope supplied by electrical distributors such as California Electric Supply for rigid conduit, junction boxes, and pull-wire assemblies. The firm's commercial portfolio includes the demolition, grading, excavation, backfill, and soil import for Snapdragon Stadium and the SDSU Mission Valley development — a 6.5-million-square-foot project requiring over 400,000 cubic yards of imported fill. Service categories span mass grading for subdivisions, hospitals, schools, sports fields, and commercial properties, plus selective interior demolition, concrete finishing, and certified C&D debris recycling at company-operated sites across San Diego County. Post-grading landscape restoration — including topsoil placement, erosion-control hydroseeding, and hardscape material delivery — frequently involves coordination with landscape supply providers such as SiteOne Landscape Supply. Highest-tier scopes include GPS-guided precision grading to within 0.1-foot vertical tolerance, engineered fill compaction to 95-percent relative density per ASTM D1557 modified Proctor specifications, and SWPPP compliance documentation for NPDES stormwater discharge permits.