Do basements have to be underground?
Furthermore, are basements always underground?
The lower floors were something we would call a “daylight basement” in the US. tldr: Basements do not have to be deep to be basements, and do not have to be underground on all sides to meet the definition.
- Step 1: The Hole. Dig a hole in the ground.
- Step 2: The Footer. Pour a concrete footer for the walls.
- Step 3: Lay the blocks. Start laying blocks.
- Step 4: Build the form for the roof.
- Step 5: Asseble the form on the roof.
- Step 6: Rebar and pouring the roof.
- Step 7: Finishing The Inside.
Also, do you need planning permission for underground?
If your home already has an underground space that is suitable for conversion from storage (or similar) to a habitable function, planning permission is not normally required as such a change is merely seen as re-purposing.
The last minor reason there are no basements in the south has to do with the frost line. For a building to maintain strength, its foundation should be below the frost line in the soil. There is no reason for builders in the south to build a basement because the foundation doesn't need to be very deep anyway.