ᐅ Please review the design for a bungalow with a converted attic, approximately 135 m² (non-professional draft).

Created on: 26 Mar 2018 21:28
J
jawknee
Hello everyone,

I often read that you don’t need to think too much about the floor plan before visiting a construction company or architect, since it usually changes anyway in the end. But I just can’t help it and want to think through as much as possible from the start 😉 I also don’t want to have to completely redo everything after the first consultation if something turns out to be impossible.

Development Plan / Restrictions
Plot size: approx. 750m² (8500 sq ft), will be developed soon, reserved
Slope: slightly sloping to the south, but almost flat
Site coverage ratio (floor space index): 0.4
Floor area ratio (FAR): 0.8
Building envelope, building line and boundary: approx. 17 x 16m (56 x 52 ft)
Surrounding buildings: see image
Number of parking spaces: 2
Number of floors: ground floor + attic
Roof style: hip roof, up to 35 degrees, 80cm (31 inches) knee wall
Architectural style: bungalow
Orientation: see image
Maximum heights / limits: ridge height 6.5m (21 ft)
Additional requirements: garage with gable roof

Owner’s Requirements
Style, roof type, building type: as specified by development plan
Basement, floors: no basement, ground floor + converted attic
Number of occupants, age: 1 (33 years old), but must be suitable for up to 3 people
Space requirements ground floor / upper floor: ground floor approx. 80m² (860 sq ft) / attic approx. 50m² (540 sq ft) (not necessarily divided exactly like this)
Office: family use or home office?: gaming room + occasional home office
Guest bedrooms per year: planning for up to 2 guests per quarter
Open or closed floor plan: closed
Conservative or modern construction: rather conservative, coziness is the priority
Open kitchen, kitchen island: no, closed kitchen or kitchen island
Number of dining seats: 5-6
Fireplace: definitely
Music / stereo wall: regular entertainment unit with TV
Balcony, roof terrace: no
Garage, carport: single garage (possibly with storage room) + open single parking space (according to development plan with gable roof, but in the neighborhood there are flat roofs as well, the latter is preferred and to be clarified)
Vegetable garden, greenhouse: nothing special, just a regular vegetable patch
Other wishes: controlled mechanical ventilation system likely (hardly imaginable to go without these days)

House Design
Designed by: DIY (Excel)
What do you particularly like and why?: Here’s everything important to me:

- I find the bedrooms and bathrooms cozier in the attic, also because you don’t have to feel like someone might pass by the window at any time, purely a feeling issue.

- Bedroom as far from utility room as possible due to noise; also not fully southwest-facing to avoid heat in summer.

- Bedroom fairly spacious (even though many just see the bedroom as a sleeping cabin). I’m currently quite bothered in my 12m² (130 sq ft) bedroom by bumping into things, facing the wardrobe wall, having little space to dress, and it just being a dark box for sleeping. Also, I think it’s a good idea to have a spare room in case I ever need some space away from (yet to be found) partner or if the lady wants to quietly lay out her yoga mat 😀

- Bathroom large enough with open shower without glass screen (I don’t like those).

- Covered terrace in front of dining/living area, as I am not a fan of direct harsh sunlight (not a sun worshiper), and the terrace can be used even in less favorable weather. Still unsure if the light conditions will be sufficient.

- No bedroom doors / walkways in dirty areas.

- Staircase not located in dirty area and as central as possible.

- Dormers for more space, better aesthetics, and general benefits of dormers.

- Combined living/dining room; kitchen separate from that.

- At least 1 additional room for office/hobby/child; ideally 2.

- Roof slopes used as storage space.

What don’t you like? Why?: Since it’s my own design, not much so far:

- Entrance area maybe still a bit narrow and perhaps could be better separated from the staircase(?)

- I’m not sure if the bedroom can be built structurally without additional supports (affects spatial feeling).

Cost estimate according to architect/designer: not available yet
Personal price limit for house, including equipment: 320k
Preferred heating technology: heat pump or gas (still undecided)

If you have to give up certain details / features
- Could give up: canopy above entrance, storage closet; everything else I have already removed for cost reasons ^^
- Cannot give up: fireplace, bathroom with bathtub, covered terrace

Why is the design as it is now? E.g.
I am initially building the house for myself, I’m single, but want to plan the house to still be comfortable for up to three people if needed.
Only a bungalow is allowed on this plot, and I experimented with single-story floor plans but couldn’t really find one that fits well into the building envelope. I’m also a fan of attic floors (as long as they don’t turn into saunas).
Originally, I thought about 120m² (1290 sq ft) and believed that’d be enough, but in the end, it’s about 135m² (1450 sq ft) to really feel comfortable.
I struggled a lot with fitting the rooms properly under the many roof slopes, moved rooms around a lot, but either a room then had too much roof slope or it didn’t fit well with the ground floor (e.g., utility room under the bedroom).


What is the most important/basic question about the floor plan, summarized in 130 characters?
Since it’s my own design, I want to know if there are any glaring errors that are objectively just nonsense. Personal taste should be left out.

PS: I hope detailed dimensions are not necessary at this stage; otherwise, I’ll try to add them later.
J
jawknee
27 Mar 2018 18:26
kaho674 schrieb:
Once the house is there, the ladies will definitely be lining up. And then you'll need plenty of closet space. 😉

My brother always says that too, but then probably Olga will arrive with her large family. Oh, I really need more rooms.
kaho674 schrieb:
It looks a bit short to me, but that can be misleading. A landing takes up quite a bit of space. Do you already have an idea of how high the ceiling and the floor-to-floor height will be? Landings usually need around 3m (10 feet) of depth.

I’ve marked it at 2.70m (8 feet 10 inches), but quite roughly, maybe it will appear smaller later. I was thinking of a room height of about 2.50m (8 feet 2 inches).
11ant27 Mar 2018 18:52
jawknee schrieb:
And my plot is located in area WA1.1. So if I want a gable roof, I have to look for a different plot,

If there is a choice between the old and new regulations, the gable roof would be possible, although with a roof pitch (DN) of 35 to 45° and also a knee wall up to 80 cm (31 inches).
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
kaho67427 Mar 2018 19:08
jawknee schrieb:

I drew them at 2.70 m (8 ft 10 in), though just roughly; it might end up a bit smaller.
I was thinking of a room height around 2.50 m (8 ft 2 in).

That will be tight. With 15 steps, you’d have a rise of 19 cm (7.5 in), which is the absolute limit for about 275 cm (108 in) stair run. One more step would be better, bringing the rise down to just under 18 cm (7 in). But if you want a proper tread depth of 27 cm (11 in), you’d need a stair run of 290 cm (114 in). You can make it steeper and more compact, but I’d recommend planning generously.
J
jawknee
27 Mar 2018 19:10
11ant schrieb:
If given the choice between the old and new regulations, a gable roof would still be possible, but with a roof pitch of 35 to 45° and also up to 80cm (31.5 inches) knee wall height (?)

I think we are talking past each other 😉 There is no option to choose within a sub-area.
J
jawknee
27 Mar 2018 19:11
kaho674 schrieb:
Then it’s going to be tight. With 15 steps, your rise would be 19cm (7.5 inches), which is the very upper limit for a staircase depth of 275cm (108 inches). Adding one more step would be better, reducing the rise to just under 18cm (7 inches). But if you want a proper tread width of 27cm (11 inches), you’ll need a staircase depth of 290cm (114 inches). It’s possible to go steeper and more compact, but I’d recommend planning generously.

Okay, thanks for the advice. I think it’s still manageable somehow.
Y
ypg
27 Mar 2018 19:44
Why? The word "also" is used there, so currently both the old specification _and_ 1.1 or 1.2 are valid.
Unfortunately, I forgot whether after the old II it must be or can be. If it can be, then I would build a so-called one-and-a-half-story house with a staggered gable roof. Danwood offers one of those in their bungalows, and we built the Studio House 2002 at Nurda...