Per‑unit estimates often appear as $0. 50 per ft for basic fiber plus additional charges for trenching and install labor. This guide provides clear cost estimates, price ranges. Cost ranges for laying fiber optic cable vary widely based on ground conditions, required trench depth, and whether the project is urban or rural. Commercial building installations with 100-200 network drops generally range from $15,000 to $30,000. A short residential drop under 1,000 ft may cost $3,000-$8,000, while longer runs to an attached garage or street node can run $8,000-$25,000.