Is border construction by garage lawful?

It was not a question of whether the floor plan is good or bad.

Isn't this design good? I am open to suggestions.

Yes, but I have not received a sufficient answer to my question so far.

Without information, answers are not possible.
What kind of boundary is meant (building boundary, property boundary, ...)?
Where are the boundaries?
Which boundary is to be built on?
What is stated about it (views, sections)?
What does the development plan say?

Legal?
What planning law requirements exist there?
Photo? Site plan? Development plan?

Where is that stated?

Hi, a quick question for the experts. How much would the bungalow approximately cost? Regards