What action members of the public can take if they object to planning permission being granted for white uPVC windows in an area where loca…

Objections to applications for planning permission should be made to the planning authority. It is for the planning authority to reach a decision on planning applications and in doing so they are required to make decisions in line with the development plan for the area unless material considerations indicate otherwise. It is for the planning authority to decide what weight to give to objections from the public, along with any other considerations which might be material, when determining an application.
There is no further planning procedure for objectors to challenge a decision once it has been issued by the planning authority. It would be for the objectors to consider taking legal advice for example on what avenues may be open to them in the circumstances of the case.
The Scottish Government has no powers to intervene once a local authority has made and issued its decision on a planning application. Scottish ministers do hold powers to call in any live planning application for their own determination, but would consider doing so only where a proposed development raises issues of genuine national interest.
These same powers and policy on their use apply in relation to applications for retrospective planning permission.