Fiber-optic cable materials typically cost $1 to $6 per linear foot, depending on fiber count and cable type. Commercial building installations with 100-200 network drops generally range from $15,000 to $30,000. Check with a local pro for your specific job. The. These networks are constructed both underground and through aerial fiber, at an average cost of $1,000 to $1,250 per residential household passed or $60,000 to $80,000 per mile. These costs were largely driven by labor, which comprised 50 – 90% of total cost, leaving materials to contribute 10% - 50%. Distance and Cable Length The longer the distance, the higher the cost.