Planning or room layouts - What do you think about it?

Hello That’s true! But after the building permit and the start of construction, it would still be up to the buyer to change the room layout, as far as possible.

Why "that’s true... but" ?? No but. Split the thing and sell two building plots, done.

The entire plot is 1,038 m² in size. So something should be built that the development plan allows. Since a minimum plot size of 450 m² is required for a single-family house, the plot will be divided. Two residential houses are to be built on it for sale!

You want to become a developer, in a lot size of two single-family houses, but not as a semi-detached house. Whether both houses look the same or are unique pieces (of which you only show one of the two models here), we have not learned so far. I assume you have the creditworthiness for the operation; the instigator is a financial advisor; and whether you end up finished is irrelevant for his profit. Let the warning sink in – better than the bullet afterward – that this is nonsense: the little house with the choir bay is such an individual matter of taste that you would only even begin to build something like that with a concrete acceptance guarantee. In general, any sensible owner of a 1,038 m² plot would look for a buyer for the raw plot who already pays for the division; and then, with the money for one half and the division fee paid by the buyer, merrily whistle while waiting for the buyer for the other half – hardly a cigarette’s length in today’s market situation. Whether the two then build E or D on it could already be indifferent to you. At most – if I absolutely wanted to still take the value added of building – I would put a semi-detached house on it, but even that only if it is concretely sold. Seen in the light of day, you won’t have to think long about why I suspect a financial advisor behind the crazy idea (and you as his useful fool).

Fire protection? The garage is not a boundary development! The neighbor’s garage is about 12 - 15 m away

Here I suspect a mistake. On the plot, I can well imagine the entire building body set back from the fence but not entirely keeping the building line free. And if that were the case, it would only raise the question of why. One would probably rather put the garage simply in the building line instead of designing the house so narrow (that you have to pep it up with a choir bay).

House 1 would then be positioned like this on the property:


There should still be space to the south, but the garage is in between. Unnecessarily, the house entrance is at the narrow garage driveway; if a step is needed there, it becomes unnecessarily tight.

The "living spaces" all face west/north, whereas the car, entrance, guest WC, and utility room have a nice southern exposure. Unnecessary slanting walls in the house, the path to the kitchen winds around the table.

With a plot ratio of 0.2, you quickly reach the limit even with a buildable area of 560 sqm...

One more argument per semi-detached house.

With a base area ratio of 0.2, you quickly reach the limit even with a buildable base area of 560 sqm...

not necessarily. Considering an allowable exceedance of 50% when counting built and paved areas! Since the resolution to adopt the development plan dates from after 1990