This Sources Sought Notice is for market research only and is not a solicitation; no contract will be awarded from it, but responses are sought from small and large business concerns under NAICS 236220. The FBI is planning a potential Design-Build project in the Irvine, California area for range improvements, with an estimated magnitude of $1,000,000 to $5,000,000. Anticipated work includes restroom renovations, erosion control and slope stabilization, concrete pad and firing lane improvements with markings, electrical system upgrades, water pressure improvements to 60–70 psi, and large-scale asphalt pavement rehabilitation. Respondents should demonstrate design-build experience of similar magnitude/complexity, bonding capability, relevant past-5-year projects, ability to work in Southern California, and personnel able to meet FBI security requirements (U.S. citizens only). Interested firms should submit a capabilities statement of no more than 10 pages via email, including company identifiers, business size/socioeconomic status, bonding, experience, and statement of interest as prime contractor.