In the property world, a contour is an outline of a mass of land. A contour or detailed survey is done by a surveyor and required before you can start on the design of your buildings. Contour lines will be marked on the survey. Below are some tips* that can help explain the marking you’ll see:
- All points on a contour line are of the same elevation.
- No two contour lines can meet or cross each other except in the rare case of an overhanging vertical cliff or wall
- Closely spaced contour lines indicate steep slope
- Widely spaced contour lines indicate gentle slope
- Equally spaced contour lines indicate uniform slope
- Closed contour lines with higher elevation towards the centre indicate hills
- Closed contour lines with reducing levels towards the centre indicate pond or other depression.
- All contour lines must close either within the map boundary or outside.