MDB General Engineering, Inc. in downtown San Diego holds CSLB license #1054408 under the Class A general engineering classification, operating as a union contractor from West C Street with certified SBE, WBE, and WOSB status. The firm's public-works portfolio spans park construction, roadway grading, and flood-control earthwork—the civil-infrastructure projects whose grading plans and planting palettes originate at landscape-architecture studios such as KTU & A Planning and Landscape Architecture. DIR registration #1000399000 confirms prevailing-wage compliance on publicly funded contracts across San Diego and Orange County, where MDB maintains a second office in Yorba Linda for Inland Empire and South County mobilization. Utility-trench and sewer-lateral phases on the firm's infrastructure projects bring in licensed plumbing subcontractors such as Colepepper Plumbing for service-line tie-ins and backflow-preventer installation. The most complex contracts involve multi-phase municipal park buildouts requiring mass grading, retaining-wall construction, stormwater-detention basins, ADA-compliant hardscape, and underground utility installation across sites exceeding five acres.