How does the code address modifications to existing residential structures?

In addressing modifications to existing residential structures, the code mandates a formal permit and inspection process. This requirement ensures that any changes made to a building adhere to safety standards, structural integrity, and compliance with zoning laws. A formal permit process involves submitting plans and specifications for review, which helps maintain consistent building practices and protects public health and safety. Inspections during and after the modifications ensure that the work meets all applicable codes and regulations, thereby safeguarding the property and its occupants.

The other options suggest a lack of oversight or regulation, which could lead to unsafe building practices. Such approaches would potentially compromise the integrity of residential structures and diminish their ability to comply with established safety standards. Therefore, the structured permit and inspection process is essential for managing modifications in a way that upholds community safety and welfare.