Unfortunately you cannot guarantee that permission will be granted where Planning consent is required. Planning applications that do not strictly fall within planning legislation and/or policy guidelines often are referred to Planning Committee Meetings. The committee members views can be highly subjective and open to broad interpretation of the rules, sometimes resulting in a non-favourable outcome on a Planning Application. However achieving Building Regulations compliance is much more straight forward and with the correct technical information provided, approval can always be obtained for any project.