Final answer:
For a construction permit application, submitting a description of the work to be done is essential as it outlines the scope and nature of the project for compliance with building codes.
Step-by-step explanation:
When applying for a permit to construct a new house, it is essential to submit a description of the work to be done (Option B). This includes a detailed explanation of the planned construction, including the scope and nature of the work. It helps the permit-granting authority to understand what the project entails and to ensure that it complies with local building codes and zoning laws. While a license number, a copy of the contract, and a completion date might be important in other contexts, the description of the work is typically the primary requirement for the submission of a permit application.