New construction project single-family house in the Bergisches Städtedreieck

Hello everyone,
I have been a silent reader for some time now, but now we have reached the point where I need help from you.
The plot has already been purchased. I have been working on creating a floor plan on my own for some time. Now our architect has postponed us for later because he currently has no capacity. Since we no longer want to wait, we are looking for a construction partner.

We want to have a modern city villa built in solid construction, with a separate area for the grandparents (not a separate apartment in the actual sense, just an internally separated living room, bedroom, and a bathroom with only one entrance and a hallway on the ground floor.)
Furthermore, I would like to have a trench collector installed coupled with a heat pump. To support our own power supply, a photovoltaic system on the roof should (can) be installed. A controlled residential ventilation system would be the icing on the cake.

The plot has a size of 604m2. It is located in the second row. The driveway is also part of our property. The previous owner parceled his garden and then sold it to us.

As an attachment, I am adding the development plan (still from before the parcelling). The hall shown on our property in it is no longer there. I photographed the sheet so that south is at the bottom and east is on the right.

Maybe someone has an idea of how the house could be placed there. Possible building window would be 11x11m or 11x12m. A double garage or a 9-meter-long garage should also fit.

Maybe one of you knows a good architect / construction manager or also a general contractor from the region (I also don’t know which option is better here…?). The construction site would be in Wuppertal.

If more information is needed, I will gladly provide it. I am grateful for any advice.

Hopefully there will be a construction preliminary inquiry with a positive outcome.

I am attaching your development plan

Your property is not located within the scope of a qualified development plan. Your project must comply with §34 of the Building Code. IMHO it does not, because there is no residential development in the "hinterland."

Maybe someone has an idea how the house could be placed there.

There are not many sensible options.

Possible building window would be 11x11m or 11x12m.

Why? A completed questionnaire might answer this question.

A double garage

... is not very practical if the house width is to remain at 11m. The plot is "only" 17m wide, and minus 3m distance on each side leaves 11m remaining. And placing the double garage at the western boundary costs too much garden – or is that irrelevant? Which brings us back to the questionnaire. What is particularly important to you?

Here is variant 14*8 with double garage:

More photovoltaic modules also fit on it.

Here is variant 14*8 with double garage:

Which tool do you use to render the graphics in which you insert your proposals? - that is, how do you extract the drawing from the post, vectorize and color it, and then put something together?

so how do you dig out the drawing from the post

As a geodata forensics expert, I evaluate the traces and search for the property using the relevant geodata portals. NRW is particularly user-friendly in this regard, so I edited a screenshot from tim-online with paint.net. It’s faster than using the tools of professional software.

Hello, and many thanks for the initial feedback.
There is a positively approved preliminary building inquiry. Otherwise, I wouldn’t have bought the plot without knowing whether building is even allowed there.
I am also aware that it must be according to Paragraph 34.
Here the question of the roof shape arises... in the surroundings, there are only gable roofs. But we want a townhouse with a hipped roof. I am curious whether that will be possible.
The previous owner submitted a preliminary building inquiry because he initially wanted to build there himself. He could have built a house there with the dimensions 11x10 x 2.5.
Since we now want to accommodate a family of six there, a different house must be built.
Thanks in advance for the two proposals for the placement of the house. I prefer option no. 1 because then we already have a landscaped garden behind the house on the east side, which is exactly the right size for us.

And here comes the requested questionnaire. Please only answer the items I can respond to.

Development plan/restrictions
Plot size: 604m2 (of which about 100m2 is for the driveway)
Slope: no. All flat.
Site coverage ratio: 0.3
Floor area ratio: 0.8
Building window, building line and boundary:
Edge development:
Number of parking spaces:
Number of floors: 2 ?
Roof shape: hipped roof (townhouse), if possible
Architectural style: modern
Orientation:
Maximum heights/limits: ?
Further requirements: ?

Client requirements
Architectural style, roof shape, building type: townhouse, solid, monolithic construction
Basement, floors: no basement, two full floors.
Number of people, age: 6 people. 2 persons around 40, 2 children (7 and 5), and 2 persons over 70.
Room requirements on the ground floor: open living-dining room with kitchen, a hallway, utility room, guest WC, separated living area for the grandparents: living room with kitchenette, bedroom, and barrier-free bathroom (approx. 45m2 here).
Room requirements on the upper floor: bedroom, bathroom, two children's rooms, office for home office, and a storage room for small items with a fitness corner.
Office: family use or home office? Home office.
Overnight guests per year: 2 - 4
Open or closed architecture: closed
Conservative or modern construction: modern, with
open kitchen, kitchen island: yes.
Number of dining seats: 6 - 8
Fireplace: no
Music/stereo wall: not necessary.
Balcony, roof terrace: balcony preferred. Terrace very much preferred, if it would be possible on the garage (I know the neighbor must agree to register a building encumbrance).
Garage, carport: garage. We have two cars. Also need a small storage room (in the garage) due to my profession.
Utility garden, greenhouse: no
Further wishes/special features/daily routine, preferably with explanations why this or that should or should not be:

It is important to say that we do not want an actual granny flat with a separate entrance, as we want to use this area ourselves later when my parents are no longer around. Furthermore, sound insulation is particularly important to me (both against noise from outside and inside the house itself). Sound insulation inside the house would also make it reasonable for the interior walls to take up as little space as possible so we lose little living space on the ground floor.
We want a concept that makes sense both economically and energetically.
Photovoltaics on the roof is also a wish so that we can produce electricity for our own use.

House design
From whom is the planning: so far, do it yourself with the help of a floor plan app.

What do you particularly like? Why?:
What do you not like? Why?:
Price estimate according to the architect/planner:
Personal price limit for the house, including equipment: we know it but don’t want to push it to the limit
Preferred heating technology: trench collector or geothermal drilling. Brine heat pump, underfloor heating.
If you have to do without, which details/extensions
-can you do without: geothermal drilling, if necessary also the trench collector, if a specialist can explain to me that it is not sensible for us. Maybe the balcony or the terrace on the garage, as this is questionable anyway.
-can you not do without: underfloor heating

Why has the design turned out as it is now?

Corresponding/which wishes were implemented by the architect? So far none

What is the most important/fundamental question about the floor plan summarized in 130 characters?
To fit as many rectangular rooms as possible. I don’t like narrow, long rooms. Lots of daylight in the important living spaces would be great.
Here I hope for your recommendation on where the corresponding rooms should be located in order to achieve optimal light utilization given the conditions of the plot location.
Thanks a lot already

You have now left the houses relatively far to the west. Because of the length of the lines or why?