The cost to install fiber optic cable ranges from $1. 50 to $42 per foot, with installation costs accounting for 60-80% of total project expenses. According to the Fiber Broadband Association's 2025 report, median costs are $8 per foot for aerial builds and $18 per foot for. Direct buried fibre optic cable is a kind of optical cable which is armoured with steel tape or steel wire outside. With performance of resisting external mechanical damage and soil erosion, it can be directly buried in the ground. These fibers are thin strands, often as small as a human hair, that transmit data as pulses of light. In this guide, you'll get data‑driven ranges you can reference in bids, an illustrative cost breakdown, and a step‑by‑step pricing framework you can hand to your. Whether you're wiring a single building or laying fiber across a larger property, knowing the key factors that influence the final cost will help you budget accurately and avoid surprises.