A more thorough explanation:

A building permit is a license given by a government agency, usually a municipality, that allows someone to construct a new building or make significant changes to an existing structure.

For example, if someone wants to build a new house or add an extension to their current home, they would need to obtain a building permit from their local government. The permit ensures that the construction is safe and meets all necessary building codes and regulations.

Another example would be if a business owner wants to renovate their store or office space. They would need to obtain a building permit to ensure that the changes they make are safe and up to code.

Overall, a building permit is an important step in the construction or renovation process to ensure that the building is safe and meets all necessary regulations.