ᐅ Two Narrow Single-Family Homes vs. a Duplex – Are There Other Options?

Hello everyone,

My sister and I share a plot of land (approximately 11 ares), which we want to divide equally.

My wish is to build a narrow detached single-family house on my half, while my sister prefers to build a semi-detached house. For me, greater privacy is the most important factor, whereas my sister does not want to give up on the “width.”

Do you have any ideas on how we can both achieve our goals? We have already considered various options, from staggered semi-detached houses to two detached houses—but neither party has ever been really satisfied. I would appreciate any suggestions. Perhaps someone here has faced a similar decision? Can you imagine a terraced house?

Regarding the floor plan, I have not thought much about it yet. It is important that the living/dining area faces west at the rear and has a full glass facade.

Development Plan / Restrictions
Plot size: total 1,069 m2 (approximately 11,500 ft2)
Slope: no
Site coverage ratio: 0.6
Floor area ratio: ? – unfortunately, I cannot find this anywhere
Building window, building line, and boundary: see graphic
Edge development
Number of parking spaces: 2
Number of floors: 2
Roof type: gable roof (according to the development plan) – ridge direction north to south
Architectural style
Orientation
Maximum height/limits
Other requirements

Client Requirements
Style, roof type, building type
Basement, number of floors
Number of occupants, age: male 34, female 29, possibly 2 children in the future
Room requirements on ground floor and upper floor: ground floor for living, upper floor for bedrooms + office
Office: family use or home office? Home office
Overnight guests per year: -
Open or closed layout: open
Conservative or modern construction: conservative
Open kitchen, kitchen island: open kitchen to dining area, kitchen island if possible
Number of dining seats: 6
Fireplace: yes
Music/stereo wall: TV only
Balcony, roof terrace: none
Garage, carport: both possible
Utility garden, greenhouse: no utility garden, only lawn (possibly swimming pond)
Additional wishes/special features/daily routine, also reasons why certain things should or should not be included

We also asked the building authority whether we could build outside the permitted building window, but this was immediately rejected.

Thank you very much for your replies.

Best regards,
Daniel

Access only from Sportplatzstraße?
In my opinion, there are only two reasonable options.
a) A detached single-family house
b) Two semi-detached houses

Building staggered will already be difficult because it’s a building line, not a building boundary. Apart from that, is it even allowed to place two houses on one plot? The owner of both houses would then be the landowner. That is almost a dealbreaker when it comes to financing.

Daniel55 schrieb:

Can you imagine a linked house?

Linked houses are actually a whole row of houses. You probably mean the sequence garage/house/garage/house. That would be too tight for me. Better to build them attached. You have enough land to maintain privacy. That won’t really increase with a 3m (10 feet) garage between the houses.

Why would you have more privacy if you can look directly into your sister’s windows from your own?
I don’t understand that argument.
For me, with this layout and the plot, only a duplex would be an option!

nordanney schrieb:

It’s a building line, not a building boundary.

How do you figure? A dot and a line indicate the building boundary... just imagine if all three lines were building lines, the house would become very large 😉

Does your sister want to build a duplex with you? And how does she envision the width? With a duplex, you allocate half... .

Please show significantly more than just this small section of the zoning plan, especially without a legend. The plot ratio of 0.6 and the building envelope are contradictory.

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ypg schrieb:

How do you come to that conclusion? One dot, one line is the building boundary... just imagine if the three lines were building lines, then the house would become very large.

Sorry, I misread – two lines and one dot = building boundary; two dots and one line = building line.