7. ASDF - Degree of Visual Change

Once the Landscape Context is established, the proposed design is scored relative to the Design Recommendations to establish a Design Compatibility percentage, and the Visual Sensitivity index is tabulated, a quantitative measure representing the Degree of Visual Change can be calculated

Negative reaction to a tower is often based on the perception of visual disamenity - a reduction in the attractiveness or intrusiveness on the natural features of a location. The often abrupt change in the skyline or views of property owners almost universally illicits a strong reaction.

The Degree of Visual Change calculated for a proposed tower provides strong indicators as to how much public opposition can be expected by the proponent and the LUA can use these indicators to ensure that the public consultation process reflects the level of concern expected by adjusting the level of due diligence and consultation required for each proposal.

As an example, a 30 metre monopole erected in a industrial park on the outskirts of a city will usually generate considerable less opposition and concern from the public than a 50m steel lattice tower located in a residential neighborhood, or near a school.

Below is a table which represents the Degree of Visual Change scale:

Design Compatibility/Site Visibility1 to 56 to 1011 to 1516 to 2021 to 24
76-100%LowLowLowMediumMedium
51-75%LowLowMediumMediumHigh
26-50%LowLowMediumHighHigh
0-25%LowMediumHighHighHigh

The LUA may use this scale to establish consultation criteria to ensure the public is given adaquate opportunity to comment on proposed sites..