These provide a detailed visual representation of how the extension will be constructed, focusing on structural integrity.

Foundation Plans:

• Specify the type, depth, and width of foundations based on the soil condition and the load from the extension.

Floor Layouts:

• Include details of floor construction, joist spacing, and materials, ensuring they can bear the intended loads.

Walls and Columns:

• Indicate whether walls are load-bearing and include construction details (e.g., cavity walls, brickwork, or blockwork), along with any steel or concrete reinforcements.

Beams and Lintels:

• Show the location, size, and material specifications of beams and lintels required to support loads above openings like windows and doors.

Roof Design:

• Outline the type of roof (e.g., pitched or flat), its structure (rafters, trusses, or joists), and material specifications to ensure stability and compliance with wind and snow loads.

Connection Points:

• Detail how the new extension will integrate structurally with the existing building, including load transfer mechanisms.

Drainage and Groundworks:

• Include plans for any new drainage systems or adjustments to existing ones to accommodate the extension.