Price evaluation of plot for end terraced house

I don't see any garages in the row of houses at all. But with 0.5/0.9 you can still add or build a garage onto or inside.

Where did it say anything about 0.5/0.9 here?

We have now submitted an offer.

Buying a pig in a poke, i.e. on nothing but the realtor's spiel and the development plan thumbnail screenshot? If yes, then please send me a (covered) blank check.

The strip behind the 11.5x12m is not super relevant for our planning; we would rather build on the main window.

You have definitely clarified that you are allowed to add onto a (windowless on your side???) multi-family house, haven't you???

The statement by the real estate agent at least matches how it looks with the neighbors, but he will still clarify that with the building authority.

??? There is a development plan after all. You should be able to read that.

The real estate agent says he suspects that the strip is intended for the one full floor terrace.

The real estate agent is an intermediary and does not have to know everything.

I do not see any garages in the row of houses at all. But with 0.5/0.9 you can still add or build a garage on or in.

I correct myself. There are building lines that must be observed. Blue is a building boundary, among others for the terrace

Where was there anything about 0.5/0.9 here?

That is in the development plan

There are building lines that must be adhered to.

The "Ga" special construction windows contradict this.

That is stated in the development plan

But the way to the plan is not recognizable here ... Nevertheless, your (why yours and not the OP's?) pictures have brought some clarity (and honestly strengthened my assumption that, to put it nicely, "nothing is as it seems here, and the offer should be entrusted to the circular file as a precaution").

That you are allowed to build an extension on a (windowless on your side ???) multi-family house is something you have certainly clarified???

The multi-family house is located north of the property opposite the street and does not have the same building lines and boundaries. Although they are at the same vertical level, the building line of the multi-family house lies to the east, while the building limit for terraces is to the west. The townhouse to which one will build the extension is indeed windowless on that side, yes. ... The property is a building gap throughout the entire residential area and currently probably a dog park ;)

The "Ga"-special building windows contradict this.

No, the text states that garages would have to be integrated... hence also the high floor area ratio, since otherwise there are no exceptions on the properties. This is not provided for in the design framework.

In maps image #15 the property is at the top left.
The southern row of houses is asymmetrical towards the blue eastern area, where (in this area) single storey applies, while basically to the west two storeys are allowed. This can be seen below at the gable and the different lengths of the gabled roofs.

The multi-family house is located north of the property opposite the street and does not have the same building lines and boundaries. Although they are at the same vertical height, the building line of the multi-family house is to the east, the building boundary for terraces to the west. The townhouse to which an extension will be added is windowless there, yes. ... the property is a building gap in the entire residential area and is currently probably a dog meadow.

No, the text states that garages would have to be integrated... hence the high site coverage ratio, as there are otherwise no exceptions on the properties. This is not foreseen in the design framework.

In the Maps image #15 the property is at the top left. The more southern row of houses is asymmetrical towards the blue eastern area, where single-story is applicable, while as a principle and viewed from the west, two-story is permitted. This can be seen below on the gable and the different lengths of the pitched roofs.

Thank you very much for the assessment (and the detective work). Only correction: The townhouse to which an extension would be added is also a multi-family (row) house. The units in the adjacent attic, upper floor, and ground floor are each separate apartments.

The parties in the adjacent attic, first floor, and ground floor are each separate apartments.

But you don't want to do it that way, do you? Even if 2 residential units are allowed and the budget permits it, you could build quite a bit for one family on the area.