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Submit plansThe new additions to permitted development with regard to a corner plot bungalow extending up by a single floor seem very constraining. Corner plots have 2 frontages and that seems to be a problem if one of the frontages is deemed a side and can't have windows. Looks like planning will therefore still be required. Is that your view?
The new Class AA permitted development right to add additional storeys is hedged about with a number of conditions. (It’s also subject to an application for Judicial Review, which could see it eventually changed or even abandoned). One of the conditions is that a side elevation of the house cannot include any windows in the new upper floor. As this is a corner plot, the question then is which elevation is the front, and which is the side? That is usually determined by looking at things like a front door, principle windows and so on. It is possible for a side elevation to front a highway in this context, as you suggest, so that upper floor elevation could not include windows. It might be a case of securing the principle of a new upper floor, via a so-called prior approval application, and then follow that up with a planning application for the design and arrangement of windows that you actually want.