How can the new extension do the most within the existing façade?
When applying for planning permission for a new rear extension, the ceiling height of the new part is usually determined by the height of the first floor windows. The reason being is because you are not allowed to block any of the existing windows, except of exceptional circumstances. But sometimes the height determination may create problems, especially if the windows are big and vertical. So, what is the solution?
In a very similar project in Wimbledon, the design boundaries have been pushed because of the unequal length windows of the first floor. The new roof has been curved upwards towards the most shallow window, creating a unique wave roof. Glullam beams has been designed to be used for this roof, giving it a wavy structure. The uniqueness of this design is exceptional and also approved under permitted development!