How long is a development plan valid?

With us, outbuildings up to 50 sqm and 9 meters of boundary construction are possible without approval. The garage is also to be built as boundary construction without approval. Allegedly, the development plan still applies.

... sometimes you just shouldn't wake sleeping dogs.

As a rule, the building authorities receive a notification from the owner that a garage is being built and that is sufficient.

Otherwise, there are also garage builders who offer gable roofs as a structure :)

: You need to look into the Saxony State Building Code. Without guarantee, version from 2014:

§ 61 Procedure-free construction projects, removal of installations

(1) Procedure-free are 1. the following buildings:

a) single-story buildings with a gross floor area of up to 10 m², except in non-urban areas,

b) garages including covered parking spaces with an average wall height of up to 3 m and a gross floor area of up to 50 m² per property, except in non-urban areas,

Under the cautiously formulated assumption that I interpret this correctly, garden sheds up to 10 m² floor area and garages/carports up to 50 m² per property are completely procedure-free, i.e., they are not subject to the requirements of the development plan, unless the development plan explicitly states that it overrides the aforementioned regulation.

Nevertheless, I would recommend consulting a local architect; they can answer that quickly for you.

Best regards Dirk Grafe