Consolidated Construction Services, operating as C2SI from Faraday Avenue in Carlsbad, holds CSLB General Building License #935596 and maintains multi-county operations across San Diego, Orange, Los Angeles, and the Inland Empire. The combined general contracting and facilities maintenance model covers mechanical HVAC installations, commercial lighting upgrades, and building envelope repairs, with electrical scopes that run parallel to the panel and conduit work performed by Green Earth Electric on commercial tenant spaces. Incorporated in 2008, the firm serves as a single point of contact for property managers requiring ongoing maintenance alongside capital improvement construction, eliminating the multi-vendor coordination overhead common in large portfolio management. Heating and cooling system replacements follow ASHRAE 90.1 energy standards, with ductwork fabrication and refrigerant line sets sized to match the rooftop units installed by Prestigious Heating & Air Conditioning on projects that exceed C2SI's in-house mechanical capacity. The highest-value scope involves full building retrofits combining LED lighting conversions, rooftop package unit replacements, and BMS integration using BACnet-protocol DDC controllers for centralized energy management.