ᐅ Floor plan design for a two-family house on a hillside

Created on: 16 May 2017 14:23
S
sichtbeton82
Hello everyone,

I would appreciate your feedback on the floor plans.

Development Plan / Restrictions:
· Plot size: 1,200 m² (18 m (59 inches) wide)
· Slope: south-facing hill, street to the north
· Site coverage ratio: 0.3
· Floor area ratio: 0.6
· Building envelope, building line, and boundary: see "enlarged building envelope" 12 x 14 m (39 x 46 feet)
· Edge development: garages
· Number of parking spaces: 3 required according to building authority
· Construction type: open building layout
· Building setback: 3 m (10 feet)
· Roof type: pitched roofs 15-30°, hipped roofs to be avoided, see regulations
· Orientation: ridge direction of the buildings parallel to each other
· Exterior design: see section 6 of the regulations


Homeowners’ Requirements

Preliminary: The homeowners (born 1982 male, 1988 female, and two children born 2014 female, 2016 male) want to live on two floors (basement and ground floor). A third children’s bedroom should also be included. The third floor (attic) should be accessible barrier-free.

· Style: Bauhaus (optionally exposed concrete)
· Roof design: large south-facing side (for solar panels, photovoltaics)
· Building type: two-family house
· Basement and floors: basement, ground floor, attic
· Number of occupants and ages as above: (2 + 3 in basement and ground floor, 2 + 1 in attic)

o Space requirements attic: 2 bedrooms, 1 flexible floor plan bathroom, open living/dining/kitchen area, utility room
o Space requirements ground floor: 1 master bedroom, walk-in closet, master bathroom, large open living/dining/kitchen area, wardrobe, storage room
o Space requirements basement: 3 children’s bedrooms, children’s bathroom, optional play corridor, boiler room, cellar, utility room

· Open or closed architecture: open
· Conservative or modern construction: modern
· Kitchen: open kitchen with island (at least on ground floor)
· Balcony, roof terrace: likely sensible on all three floors considering exposed concrete
· Parking spaces: carports if possible, which can later be converted into garages (initial cost saving)
· Heating/thermal technology: air-to-water heat pump (underfloor heating), optional photovoltaics
· Windows: large window areas on the south side, optionally wide, low windows above the kitchen worktop on the ground floor
· Energy efficiency: KfW 55 standard
· High sound insulation (especially for the ceiling of the attic, separate residential unit)

East view: sketch with stacked rectangles, diagonal line and hatched triangle.


Elongated plot marked in yellow on a site plan with parcel numbers.


Ground floor plan: living/cooking area, master bedroom with walk-in closet, bathroom, WC, hallway, terrace.


Hand-drawn basement floor plan with hallway, cellar room, bathroom, and three children’s bedrooms.
M
matte
5 Sep 2017 10:09
I don’t think the master area is very well designed.

1. There is only a single door between the bedroom and the living area without any buffering, which is not ideal in terms of sound insulation.
2. Having two doors to the master bathroom is also not practical. What’s the point? So that a person can go directly from the living area into the bathroom to use the toilet? You have a guest WC right next to it. To me, having almost two doors per room feels too noisy and disruptive.

I would suggest making the access to the bedroom and bathroom through the walk-in closet, with the entry from the hallway leading into the closet.

€: Alternatively, you could add a small storage room as well.

Grundriss eines Hauses mit Wohnküche, Schlafzimmer, Ankleide, Bad und Terrasse.


Grundriss eines Hauses mit Wohnküche, Schlafzimmer, Ankleide, Bad und Terrasse.
S
sichtbeton82
5 Sep 2017 13:06
The second door was designed for the daily routine. One of the parents gets up earlier, goes through the dressing room to the bathroom, and can then go directly into the open living area without having to pass back through the bedroom. Your idea of access through the dressing room in both directions is really good! Thanks for that! This will be discussed later.
Y
ypg
5 Sep 2017 13:39
Quick suggestion:
I would eliminate the walls in the granny flat, separating the hallway from the main living area—preferably with a small entrance area plus a separate small corridor leading to the bedrooms. This way, the main living space feels larger without significant loss. Possibly make one bedroom smaller to accommodate a wardrobe. In a granny flat, you can also skip the bathtub and make the bathroom smaller.

The window designs look a bit too overwhelming to me.
Y
ypg
6 Sep 2017 00:01
On second thought, the hallway is actually larger than needed, @matte1987 noticed that well: but in my opinion, there is still potential for better planning in this area.
S
sichtbeton82
11 Sep 2017 12:09
Here are some additional thoughts.

Basement: The mudroom (a space where you remove dirty clothes, such as garden work clothes) and basement 02 (the basement for the attic apartment) will be swapped. The new mudroom will be enlarged to also accommodate the laundry area. Additionally, a door below the staircase will provide direct access to the hallway.

Ground floor: The bay window is removed (hooray!). The walk-in closet is now accessible directly from the hallway, with access from there to the bedroom. The idea of implementing a storage closet will be carried out. The partition wall between the walk-in closet and the bedroom will be removed in the northern section if structurally feasible. A built-in closet will then be installed along the northern wall (7m (23 ft) from the walk-in closet to the bedroom). This is intended to create a more open and airy feel.
We are still not certain whether the door from the bathroom to the hallway should be removed.
The distance between the entry vestibule and the staircase is only 1.4m (4.6 ft), which might be a bit tight. However, the staircase cannot be moved further. Therefore, the idea now is to open up the vestibule area more. A railing and a canopy will be planned for the landing outside at the ground floor entrance.

Ground floor + attic: The terraces on the ground floor and attic will each be extended by 1m (3 ft), so they will project 1m (3 ft) beyond the exterior walls of the respective lower floor. This is intended to improve sun and weather protection.

Floor plan of a residential building with staircase, hallway, bathroom, and three bedrooms as well as basement.


Floor plan of a residential building: open plan kitchen-living, dining area, bedroom, bathroom, and terrace.


Floor plan of a house: open plan kitchen-living, hallway, two bedrooms, utility room, bathroom; carport/parking area.
M
matte
11 Sep 2017 20:06
I would carefully reconsider removing the wall between the bedroom and the walk-in closet. Otherwise, you will still hear the other person’s noises in the bedroom if you get up at different times.

In that case, the bedroom would even become a pass-through room if someone needs to get to the bathroom.

In my opinion, you can forget about the more open feel if you have a 7m (23 ft) long built-in wardrobe there.

Since such a wardrobe is usually divided anyway, the wall wouldn’t be an obstacle, and only the door opening would be an issue.

A sliding door in front of the opening would be a good solution—you wouldn’t have a door in the way, and you can still separate the bedroom when needed to have some quiet.

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