How will this development affect you and your community?
You'll have to examine the planning application very carefully to find out exactly what a proposed development consists of and how it could affect your local community. You may also find it useful to look at other applications for the same area, to get a wider picture of how new development is likely to shape its future.
Planning applications and accompanying documents should describe the proposed development's size and location, how it will function, and its relationship with the immediate surroundings.
You should concentrate your support or objections around these three main issues, because they're the key things the so-called material considerations' that decision-makers will take into account. It can be valuable to cover other concerns, but keep your focus on these main issues. For example, complaining that you don't like terraced houses, or that a building will spoil your view, will be less relevant than saying that a new development proposal doesn't take account of flood risk. Equally, saying that you support an application because you think it will improve property values is not really relevant, but you could give your support because you think the proposal will improve the quality of local public spaces.