An initial quotation is an estimate, and the final cost can be affected by unforeseen circumstances. The most common factors that can lead to cost changes include:

• Site Conditions: Unstable soil, rock, or the presence of existing underground utilities can significantly increase the time and effort required for trenching, leading to higher costs.

• Cable Type and Length: Any changes in the type of cable or the overall length of the route can directly impact the material cost.

• Access and Logistics: Projects in densely populated urban areas with limited access or those in remote, difficult-to-reach locations will incur higher logistical costs.

• Regulatory Changes: Unexpected changes in local regulations or permit requirements can also add to the project's overall cost.