Per-foot estimates often span $0. 00 for horizontal runs, with elevated costs where trenching or bore crossing is required. Distance and routing method dominate costs. Home and business buyers typically see a wide range of costs for fiber optic projects, driven by distance, fiber type, conduit needs, and labor. This guide outlines the typical cost. The total project cost typically ranges from a low near $2,000 to a high well beyond $15,000, depending on run length, environment, and required trenching or aerial work. Conduit systems add $2-4 per foot but allow future cable additions. This cost includes buying all the materials (conduit, vaults, cable, splice.