Commercial Lighting Auditors conduct lighting surveys/audits to document existing conditions as it relates to lighting, lighting controls, and general electrical systems including fixture type, lamp type, wattage, voltage, ballasts, height, mounting, dimensions, foot-candles, and controls. Lighting Auditors talk to Building Operators and Facility Managers to discuss lighting concerns, energy usage, and needs for improvement. When the analysis is complete, Lighting Auditors develop a plan and recommendations to improve lighting conditions and reduce maintenance and energy costs.

According to the U.S. Energy Information Administration, in 2020 lighting accounted for about 12% of the commercial sector's total electricity consumption. This is a huge amount of energy and provides an obvious place for energy savings. Commercial Lighting Auditors are experienced in lighting technology and work with clients to ensure lighting systems utilize the latest integrated lighting technology and controls in order to meet the lighting needs of building occupants in addition to reducing energy usage and increasing sustainability. Lighting Auditors enter building and lighting data into audit software to generate reports, proposals, and design layouts for lighting system upgrades. Lighting Auditors help clients strategically think about their current lighting needs as well as consider future goals related to lighting, building maintenance, and energy cost-savings. A Lighting Auditor's report may identify the ideal type and size of fixtures and fixture conditions necessary for a building and also recommend specific lighting controls to optimize energy usage.

Depending of level of knowledge and experience, Commercial Lighting Auditors assist in preparation of bidding documents, help coordinate lighting installations, assist with lighting controls start-up and commissioning, and help prepare applications for financial incentives from local utilities and government agencies.