ᐅ Build a Duplex or Two Single-Family Homes on One Lot?

Hello dear forum,

We are currently planning the development of the plot of land attached. The previous owner’s initial plan was to build a duplex (see preliminary building inquiry in the attachment). As the new owners, we are now wondering if there might be enough space on the property to build two single-family houses while complying with the boundary building regulations. The plan is to divide the plot in half and possibly build two single-family houses. However, this could be quite challenging due to the building boundary limits.

Are there any exceptions regarding boundary construction if an agreement on a reduced distance is reached with the future neighbor? Or is it generally not allowed to reduce the distance because of fire safety regulations and similar requirements? I have attached the relevant zoning plan provisions (upper information, MI).

Thanks in advance.

Best regards

My final tip is that only the building authority can provide a definitive answer.

I am not clear on where the plot should be divided (i.e., the exact location of the boundary line).

Is it intended that two single-family houses should fit in the area currently marked as "Whs" (10.71 x 18.00 meters (35.1 x 59.1 feet))?

Rob1107 schrieb:
Are there any exceptions regarding building close to the boundary if you and your future neighbor agree on a reduced distance?

You could both waive the minimum distance to each other and build your single-family houses as close as a semi-detached house would be.

Leaving only a small alley between the two buildings (for example, just 3 meters (10 feet) total) would only create the disadvantage of having two additional exterior wall surfaces, without the benefit of much light coming in between.

In my opinion, building a semi-detached house (which are usually connected on one side) would be more practical and cost-effective.

What exactly is the issue: does only one of the two families prefer to build a detached house?

---

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

Clear statement. This is a duplex lot, or just a single-family home. Anything else is nonsense.

11ant schrieb:
I’m not clear on where the plot is supposed to be divided (meaning the boundary line).

Is the idea that two detached houses should fit where the "Whs" (10.71 x 18.00m (35 x 59 ft)) is currently marked?

That would be the ideal option. However, we are not sure if two detached houses would fit there. (We will have a consultation with an architect, so for now we are just looking for opinions in the forum on what you think.)

You could both forgo having space between your houses and build your detached houses as close together as semi-detached houses normally are.

Leaving only a narrow alleyway (for example, just 3m (10 ft) in total) between them would only mean having two additional exterior walls, without the advantage of letting much light in between.

Are you sure about that? Do you perhaps have any legal basis for this in Baden-Württemberg?

What exactly is the issue: does (only) one of the two families prefer to build a detached house?

Actually, both want to build one detached house each. One party would also like to build with a basement, the other without. If there isn’t enough space, it will ultimately be two semi-detached houses.

Nordlys schrieb:
Clear statement. This is a detached house plot. Or just a single-family home. Anything else is nonsense.

And on what basis do you justify that?