ᐅ Floor Plan Design for a Single-Family Home on a Sloped Site

Created on: 23 Nov 2020 16:56
J
JayneCobb
Hello everyone,

As I introduced myself here in the general forum, we have had several discussions with different general contractors, both for solid construction and timber frame.
We are now at the point where we have received some floor plan proposals.

I would like to present to you here (firstly?) the draft from the company Holz 1, which we particularly like because of the gallery and because it includes many of the features we communicated in advance.
I redrew this myself, so please forgive me if some elements appear a bit amateurish.

Most of the windows are not included in the drawing. What we would find extremely appealing is the (probably very expensive) idea of extending the eastern glass area at the southeast corner over two floors, but I couldn’t quickly find this option in the program.
I sketched in the larger bed on the ground floor to show proportions, as this room could potentially serve as a bedroom for us later.

From the linked thread above, it was already suggested by several forum members to locate the living/dining area on the garden level and the sleeping area upstairs.
Our reasons for planning it this way (though we are not yet entirely fixed):
- significantly shorter distances for carrying groceries, taking out trash, etc.
- nicer view from the living area into the greenery/mini-valley I described compared to the basement level
- more spacious feeling with an open ceiling/the gallery
- entering and being able to "just relax"
- simple accommodation of a frailty scenario (potentially living on one floor later, at least for a certain time)

We appreciate any further comments, ideas, etc. — thank you in advance!

Development Plan / Restrictions
Lot size: 791 sqm (8505 sq ft)
Slope: yes
Site coverage ratio: 0.35
Floor area ratio: 0.6
Building envelope, building line and boundary: see attachment
Number of parking spaces: 2 (double garage planned)
Number of floors: 2 to 2.5 (garden floor, ground floor, and possibly half an attic as a gallery with open space above ground floor)
Roof type: gable roof (35-42° specified)
Orientation: still open
Maximum heights/limits: ridge height 6.5 m (21 ft 4 in); eaves height 11.5 m (37 ft 9 in)
Additional requirements: Distance from house to street approx. 4.50 m (15 ft), terrain slopes downward from street

Owners’ Requirements
Style, roof form, building type:
Unfortunately, the development plan restricts us to a gable roof; if we had free choice, I would have opted for a clear Bauhaus style.
Basement, floors:
Garden floor 1/4 basement, 3/4 sleeping area. Above that, ground floor as living area, possibly a half open attic (gallery with open space + 1 room).
Number of people, ages:
3-4 people: 44 and 46 years old; son 1.5 years old, and husband’s 12-year-old daughter (she either spends every second weekend there or lives there permanently).
Space requirements on ground and upper floors:
Because the garage will likely need a basement due to the slope, we have planned the basement (storage, possibly workshop) there with access both from the garden side and from inside the house. On the garden/basement floor itself: technical room and laundry, three bedrooms, and main bathroom. On the ground floor (level with street, also accessible from garage) is the living area with kitchen, open living and dining area, pantry/utility room, an office/guest room, and a guest bathroom. An architect from a developer suggested the possibility of a half attic as a gallery with open space over the living area and a small room (guest room, office), which I really like.
Office: family use or home office?
There will definitely be some home office usage.
Number of guests per year:
Hard to say, but a small guest room is planned.
Open or closed architecture:
Rather open in the living area; above all, the view into the unbuildable, sloping green space (southeast) should be emphasized by high ceilings (no intermediate floor there) and large windows.
Open kitchen, kitchen island:
Kitchen can be separated by sliding door; no kitchen island needed.
Number of dining seats:
6
Fireplace:
Preferred (or wood stove), but not a must.
Music/Stereo wall:
Yes
Balcony, roof terrace:
Balcony on the ground floor facing southeast (preferably partly recessed into the house, but probably too little space), south side.
Garage, carport:
Garage preferred.
Productive garden, greenhouse:
Partly productive garden, partly digging/play area, partly nice to look at, partly play options for our son.
Other wishes/special features/daily routine, including reasons why something should or should not be:
We imagine a KfW55 standard house prepared for photovoltaic system installation.
I want the ground floor designed so that if mobility becomes limited in the future, we don’t have to move out immediately but can live on one level. Therefore, an additional room on the ground floor is a must, currently used as office/guest room and potentially convertible into a bedroom. For the same reason, the guest bathroom should already have a shower, and somewhere on the ground floor space for washing machine connections should be planned.
I personally lean toward spaciousness and many rooms but notice that the budget clearly limits this. My partner is more minimalist and wouldn’t mind if the house isn’t too large.

House Design
Planner:
Planner from a construction company
What do you particularly like? Why?
Gallery/open space (openness)
What do you not like? Why?
Less space (e.g. currently small bathroom, which can be adjusted) — budget-driven
Price estimate according to architect/planner:
520,000-550,000 euros gross (very rough estimate, no formal offer yet)
Personal price limit for house including fittings:
530,000 euros (but never say never)
Preferred heating technology:
Air-to-water heat pump

If you have to give up, on which details/extensions
- can you live without:
Garage can be shorter
- can you not live without:
Something open (some special feature/beautiful detail)
View of the biotope strip to the southeast

Why is the design the way it is now?
Were the corresponding/which wishes implemented by the architect?
Yes.
What makes it particularly good or bad in your eyes?
Airy, sufficient number of rooms

What is the most important/basic question about the floor plan in 130 characters?
Is the layout of the house suitable to meet our requirements?

Site plan: yellow street at left, red polygon marks building area; blue lines/markings.


Floor plan of a house with basement, laundry room, bathroom, bedroom (bed 200x200) and kids' room.


Floor plan of a house: garage, hallway, kitchen, dining/living room, office/guest, guest bath, balcony.


Floor plan of building space: office/guest, open gallery and open space with central brown column.


3D floor plan of a house from above with stairs and rooms.


Isometric 3D floor plan of a house with various rooms, hallway, and entrance.


3D floor plan of a house with interior walls, doors and entrance.
11ant28 May 2021 14:17
hanghaus2000 schrieb:

The road was raised, which unfortunately was not visible on the last plan. The original terrain slopes downwards towards the southeast.

It still does, and in my assessment, the “raising” here is limited to the road base layer — not a raised development like with @goalkeeper ;-)
hanghaus2000 schrieb:

“Of course, it’s a pity that the south garden will be missing those 2.5m (8 feet 2 inches).”

In my proposal, it would have been one meter (3 feet 3 inches) less: with a boundary garage and then a one and a half meter (5 feet) garden setback between the garage and the house, after which I would have followed the slope of the building permit window.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
H
hanghaus2000
28 May 2021 14:42
I have now also looked at the photos. Thanks for the tip. The neighbors align their house with the long side facing south. Why don’t you? I will take a closer look at this.
H
hanghaus2000
28 May 2021 15:23
This is how I would have planned it. You still have some space left on the west side.

Site plan of a property with blue buildings, boundary lines, and elevation figures.


Of course, I don’t know if a carport at the street and neighbor’s boundary is permitted.
H
hanghaus2000
28 May 2021 15:34
Or you could have a partial basement under the carport.

Site plan of a property with a blue house, boundary lines, arrows, and green areas.


This way, you hardly need to alter the slope at all.
J
JayneCobb
31 May 2021 00:51
hanghaus2000 schrieb:

I also took a look at the photos. Thanks for the tip. The neighbors orient their houses with the long side facing south. Why don’t you? I’ll take a closer look at that.

Thank you very much for your suggestion and the concrete ideas!
The neighboring houses north of us are accessed from a road that is at a 90° angle to ours (see attachment, our plot is the one with 791 sqm (8,517 sq ft)).
So they have oriented their houses to their street, just like we have.

I really appreciate the effort you put into considering whether the house could be positioned differently!
However, I find it difficult to imagine the house lying in a hollow and only being accessible via the driveway.
At least that’s how I interpret your designs (if you visualize the terrain), but maybe I’m missing something.

Site plan of building plots with parcels 63-66 and area specifications
H
hanghaus2000
31 May 2021 08:10
The arrows on the plan indicate the ridge direction. So, I understand it as meaning you can position the house both south-north and east-west. The house is at the same elevation, just a bit further north. This way, you have a nice large garden to the south. You also gain some space to the west since that area will be filled in. A house will likely be built to the east soon, so I wouldn’t orient it that way. Is there a possibility that development will continue to the south as well?