ᐅ Roof Style Bay Window – Is a Flat Roof Allowed Despite Vapor Barrier/Waterproofing Requirements in the Development Plan?

Suppose a development plan specifies a hipped roof or gable roof with a pitch between 25° and 40°, but what exactly does this apply to? Is there any regulation stating that this only refers to the main roof of the primary building? If the plan states HR/GR (hipped roof / gable roof) and 25°–40°, why is it then allowed, for example, to build a flat-roof garage or why is this commonly done? What rules apply to building elements such as a single-story bay window on the ground floor of an otherwise two-story building? Would you then have to incorporate a gable or hipped roof with a 25° to 40° pitch there? On the other hand, if I classify it as a balcony, is a flat roof permitted?

Furthermore, what about an entrance canopy? Does the entrance canopy also need a small hipped roof because the development plan requires HR/GR, or definitely not?

So my question is: to what exactly does the specification of the roof type in the development plan refer, and what does it not cover? And why is that the case?

These are the kind of questions you should ask your trusted architect. They are familiar with the local zoning plan and its details, which this question is based on. (I assume that if certain passages are not mentioned in the zoning plan, then the regional building code or simply the architect’s expertise applies... key point: secondary building structures, outbuildings)

I thought the disclaimer was only necessary in the green forum, but okay:

Yes, I have already asked my planners. I received different answers. For now, I don’t want to influence the responses by suggesting anything, so I’ll leave the question open without further comments and possibly share later what each planner said.