1. Wrong budget calculation may lead to errors in estimating Subcontractor License. Estimation requires labor costs, cost of materials and calculation of quantities. Some times any error happened may lead to loss of money. So you can use any calculator to calculate the amount required and copy it in a book for further review.
2. Normally budget required for House Plans 28X48 is estimated from the plans and drawings. Any errors in measurements and dimensions taken from plans and drawings may result in corresponding mistakes in the cost of construction.
3. Any fault on construction projects subjected to permits and inspections may also cause construction.
4. Sometimes the cost of constructing materials, machinery and equipment to a project can be very expensive. This may also affect the estimation. Also cost of transportation may sometimes become high due to poor roads and heavy traffic to and from supply sources.
5. Some labors do not complete their work in time. This may also affect the estimation. So select the labors who complete their job on schedule. You can appoint labors for overtime work in order to complete it in schedule. Overtime rates are fixed according to the labor agreement rule or labor union rule.
6. Any fault in visiting the construction site may lead to error. Visiting the proposed site of the project enables the cost estimator to inspect the plot.
7. Lack of experience in the field of construction may result in error. This may sometimes result in failure to review building codes and permits.
8. Failure to give the work to a good contractor may also affect the estimation.