ᐅ Challenge of a quarter-circle house ;)

Created on: 5 Nov 2019 02:16
S
Serdar88
Hello everyone,

Warning: "repost" after optimization. Reloaded.
https://www.hausbau-forum.de/threads/Herausforderung-Grundriss-für-unschoene-grundstueckform-Hilfe.32565/
What has happened so far:

I am currently planning a house on a somewhat challenging plot shape. (Of course, the question immediately arises, "why don’t you buy a plot with a better shape to work with?" Answer: in our region of BW Region X, there are hardly any affordable plots. The city’s land prices are around 480 €/m2 (about $45 per sq ft).) The plot is located slightly outside the city and was purchased relatively cheaply.

Okay, so I now have the plot, and “only” the house is missing on it.

Site plan with yellow and pink zones, blue outline, north arrow, max single-family home 209.50 m

Site plan showing a plot with lawn and curved driveway

Plot site plan with curves, measurement lines and boundary markers.

In advance: the building authority gives me no exemptions whatsoever.

A major challenge is the house geometry because I prefer having the terrace on the south/west side and still enough space inside the house.

In the first attempt, I planned several corners. House geometry as ground floor:

Site plan of a plot showing boundary, driveway and lawn area


Based on your contributions and ideas, I completely rounded it into a quarter circle, which I also like better and can get used to.
Yes, the topic of walls, windows, and furniture is a bit more complex, but it has its charm.

Site plan: blue building footprint on plot with measurement lines in meters and curved boundary.

3D view of a pink, semicircular pool basin model in SketchUp.


Currently, I have considered the following layout.

Here are the basic key data:

Development plan / restrictions
Plot size: 434 m2 (4670 sq ft)
Slope: no (or minimal)
Floor area ratio (FAR): 0.4
Building coverage ratio (BCR): 0.4
Building envelope: see development plan above (2.5 m (8 ft) to neighbors)
Edge development: no
Number of parking spaces: garage + 2 parking spots
Number of floors: 2 full floors (basement + ground floor + first floor)
Roof type: pitched shed roof
Architectural style: semi-detached house
Orientation: see development plan above, right side
Maximum heights/limits: ridge height 8.5 m (28 ft), eaves height 5.5 m (18 ft)
Additional regulations:

Client requirements
Style: modern
Building type: semi-detached house, 2 stories each approx. 120 m2 (1300 sq ft)
Basement, floors: 0, 1.5
Number of occupants, age: 2 adults, currently no children
Space requirement per floor: approx. 120 m² (1300 sq ft)
Office: family use or home office? Office in living room or children’s room
Overnight guests per year: 15
Open or closed architecture: mixed
Conservative or modern construction: modern
Open kitchen, kitchen island: open kitchen with dining and living area with access to terrace
Fireplace: optional
Music / stereo wall: TV on wall
Balcony, roof terrace: no
Garage, carport: garage yes
Kitchen garden, greenhouse: no
Other wishes / special features / daily routine, also reasons why or why not

House design
Designed by: myself
I like the larger terrace in the south/west directly from the living-dining area
Both bedrooms have their own bathroom
Bathrooms all aligned for plumbing

Cost estimate according to architect/planner:
Personal price limit for house, including equipment: 550,000 euros (without furniture or land)
Preferred heating technology: gas burner

If you had to give up, which details/upgrades
- Could you give up: not sure
- Can you not give up:

Why is the design the way it is now? For example:
I wanted, as described above, a large combined kitchen, dining, and living area with direct access to the main terrace.
For that, keep the house maximum to the north side. Two bedrooms, each with its own bathroom.

Here are my questions and requests for advice:

What is the most important / fundamental question about the floor plan in 130 characters?
1. Do you prefer the rounded design over the corners from the first draft?
Before:

Detailed 3D floor plan of a house with furniture, stairs and rooms

Now:

2D floor plan of a house with living room, kitchen and stairs, including measurements.


2. What do you think of my new floor plan?
Architect criticizes:
--Bathroom without windows (No-go?)
--Small entrance area, staircase without a landing is bad, basement stairs are bad
--Bedroom 2 should be in the east (if child)

3. How would you optimize the weaknesses from point 2?

4. How do you find the architect’s initial draft?

Floor plan of a building with red exterior walls; kitchen, dining area, living room, bathroom, stairwell.


Thank you very much in advance and best regards

2D floor plan of a single-family house with color-coded areas
M
Matthew03
5 Nov 2019 10:11
I don’t find the architect’s floor plan convincing; it starts with the sharp-angled triangular area to the left of the entrance and ends with the enclosed walk-in closet. In between, there is also the poorly designed kitchen layout...

I think the project is brilliant and very exciting, but the floor plan simply has to be done differently. There should be more possibilities to do justice to the house’s shape and to integrate it better.

At the same time, I share the previous posters’ budget concerns.
kaho6745 Nov 2019 10:14
I don’t find either your design or the architect’s draft appealing. I think building the curve is nonsense. If it were mine, I would consider something like this:

Floor plan of a house with stairs, utility room, WC, living room with dining table and sofa; purple exterior walls


Floor plan of a house with kitchen (K), bathroom, bedroom (SZ), room A and stairs.


However, this house already has exactly 172 m² (floor area ratio). The allowed limit is 173.6 m² (floor area ratio).
If you skip the walk-in closet, you could squeeze out a few more square meters. Or go with a basement – but that probably won’t fit the budget.

It’s the same as always: you have to be able to afford such “cheap” plots. Just ask @Oakland!
H
haydee
5 Nov 2019 10:25
Still wondering why two residential units on such a small plot?
The budget won’t work, not even with rounding.

A stylish single-family home that fits the plot and the budget.
M
Mottenhausen
5 Nov 2019 10:33
Serdar88 schrieb:

1. Do you prefer the rounded edges over the corners in the first draft?

No, I still think both options are "wrong." The rounded design could be developed further, but what do you make of it? Staircase, hallway... that's about it. For these "rooms," the shape hardly matters anyway.

What speaks against a northwest-facing open living area along the curve? In the afternoon, sunlight would come in there, and the curve could, for example, create a great effect with a centrally placed fireplace in front of it.
J
j.bautsch
5 Nov 2019 10:43
kaho674 schrieb:

If it were mine, I would consider something like this:
Nice, clear design. I really like it.
kaho6745 Nov 2019 10:52
164m² (1775 sq ft) if I put the children’s rooms in the east. However, the bathroom is above the living room – drainage will need careful planning.

Floor plan of a house with stairs, furniture, technical area, and WC.


Floor plan of a house with two master bedrooms, bathroom, kitchen, and staircase.


That leaves 10m² (108 sq ft) for the rest – how much can realistically be gained with a terrace and parking space? Probably none?