Looking for experiences regarding change of use!

Hello and good evening to everyone! I own a 141 sqm plot of land on which there has been a shed/barn since 1975, which has also been used as such. Now I would like to build my retirement home there, nice and small and manageable, it could stay as it is, just insulated inside, heating, etc. The little house has a footprint of 60 sqm and is already connected to the sewer. Electricity is also available. I would probably have to apply for a change of use. What is the best way to proceed? Of course, I am concerned that someone from the authorities might say "no" right away and then I would be stopped. I have already thought about talking to an architect first.... Who has advice? After all, no new areas are supposed to be built on - in my opinion, this would be a sensible use of existing material! I would be grateful for tips! Regards

First of all, you have to clarify whether the construction is located in the [Innen-] or [Außenbereich]. Changes of use in the [Innenbereich] are nowadays rather unproblematic. In the [Außenbereich], they are still impossible.

I own a 141 sqm plot of land, on which there has been a shed/barn since 1975, which has also been used as such. Now I would like to build my retirement home there, nice and small and manageable, it could stay as it is, just insulate inside, heating etc. The little house has a floor area of 60 sqm and is already connected to the sewer. Electricity is also available.

That already has a considerable amusement value, speaking of a 141 sqm plot of land as "large." A 60 sqm building footprint on it would already be a floor space index of about 0.43. Explain in more detail, preferably with pictures, how we should imagine this shed-barn-house. Living spaces have to comply with setback distances, whereas a shed might enjoy certain privileges (which, however, are not inheritable to the same building with a different use).

That already has a considerable entertainment value, to speak of a "large" 141 sqm plot. 60 sqm of building footprint on it would already be a floor area ratio of about 0.43. Explain in more detail, preferably with pictures, how we are to imagine this shed-barn-house. Living spaces must comply with boundary distances, where a shed might indeed enjoy a privilege (which, however, is not transferable to the same building with a different use).

Thank you very much for the assessment. I’ll take some photos of my little darling... ;-) The boundary distance might cause problems.... What would be your approach: first the building authority, or invest in an architect’s consultation....? By the way, I appreciate the entertainment value in these crazy times! ;-)

How would you proceed: first the building authority, or invest in an architect's hour...?

First illustrate your words here

I'll take some photos of my little treasure...

Start with those that have already been made: from Google Earth, from the online cadastre ...

Only here your words illustrate

Start with those that have already been done: from Google Earth, from the online cadastre ...

Ok, I’ll try to upload a photo! It is the small building in the middle!