ᐅ Floor plan design for two small semi-detached houses built to KfW40+ energy efficiency standard
Created on: 5 Mar 2020 19:18
K
knalltüteK
knalltüte5 Mar 2020 19:18Hello,
after my bathroom planning failed quite a bit, I’m trying to reconsider the entire plan. Today we visited our preferred construction company, with whom we will most likely build, and presented the plans shown here as a basis for planning (price for building shell including double casement window, roof, tiles, insulation).
The construction company does not have its own architect. Our cousin (an architect) is unfortunately fully booked and could only start next year... We will talk to other architects next week. Perhaps a solution for a “cozy” floor plan will be found here in the meantime, one that is not so complicated. Fewer walls/corners, but still everything should fit. I hope I have entered all necessary information below?
Development Plan / Restrictions
Plot size – 308m² + 338m²
Slope – no (slightly sloping northwards, max. 1m over 28m depth)
Site coverage ratio – 0.4
Floor area ratio – 0.8
Building envelope, building line and boundary – marked or visible in the development plan
Edge development – yes, setback to the north 4m
Number of parking spaces – 2 (per plot)
Number of floors –
Roof style – gable roof with approx. 50cm (20 inches) eaves overhang
Architectural style
Orientation – ridge from west to east
Maximum heights / limits – eaves height: 4.5m (15 feet), ridge height: 9.0m (30 feet)
Other requirements – dormer max. 50% of eaves length and 1.5m (5 feet) below ridge
Clients’ Requirements
Architectural style, roof shape, building type
Basement, floors – no basement – 2 floors
Number of people, age – left: 2 each, right: 1 each
Space requirements on ground floor, upper floor
Office: family use or home office? – none
Number of overnight guests per year – 15 (toddlers → sofa bed)
Open or closed architecture – as open as possible
Conservative or modern design – modern
Open kitchen, kitchen island – open-plan kitchens
Number of dining seats – left approx. 3-4, right approx. 2-3
Fireplace – no
Music/sound system wall – yes
Balcony, roof terrace – uterraces below, dormer above (left 4m (13 feet), right 3.5m (11.5 feet)) with attached balcony
Garage, carport – no (technical building offsite / monopitch roof)
Utility garden, greenhouse –
Other wishes / special features / daily routine, happily also reasons why this or that should or should not be included
House Design
Who created the design – currently: “do-it-yourself”, possibly an architect if it cannot be made suitable.
What do you particularly like? Why? – I can well imagine living in it…
What don’t you like? Why? – too complicated in the utility room area / bathroom, also upstairs the staircase to the attic is difficult
Price estimate according to architect/planner: – for the shell including double casement window, an offer is expected by the end of March (based on the plans shown here)
Personal price limit for the house: not sure yet (open to almost everything).[ /I]
Preferred heating technology – [I]heat pump, photovoltaic system + battery, controlled mechanical ventilation, underfloor heating, possibly cooling via underfloor heating (geothermal heat pump possible?)
If you have to give up, which details/extensions
can you do without –
• large glass sliding door element on the ground floor right (private use) possibly omitted due to KfW40 standard
• instead of very high-quality finishings with fixtures (kitchen, bathroom, living room), something simpler (but good) is acceptable
• possibly the attic conversion (which cannot be rented out officially anyway)
cannot do without:
• bathtub
• washing machine not allowed in the bathroom
• controlled mechanical ventilation system partly in the utility room, so utility room on the ground floor is essential, ventilation unit for the upper floor is in the attic knee wall
Why did the design become how it is now?
Various drafts were discussed with family members (some are currently building themselves, some are building services engineers), discarded, and redesigned until it technically worked and we liked it—except for the minor issues mentioned below.
Since the bathrooms and kitchens of the two semi-detached units are on the shared wall (fire wall), it would be good if the general position does not change completely.
What is the most important/fundamental question about the floor plan summarized in 130 characters?
• Alternative to the very complicated utility room/bathroom layout (expensive, cramped) while keeping the rough layout of the open kitchen as it is. I like it because of the terrace facing south in front of kitchen and living room.
• better staircase solution
• lack of storage space upstairs
Plans will follow shortly…
after my bathroom planning failed quite a bit, I’m trying to reconsider the entire plan. Today we visited our preferred construction company, with whom we will most likely build, and presented the plans shown here as a basis for planning (price for building shell including double casement window, roof, tiles, insulation).
The construction company does not have its own architect. Our cousin (an architect) is unfortunately fully booked and could only start next year... We will talk to other architects next week. Perhaps a solution for a “cozy” floor plan will be found here in the meantime, one that is not so complicated. Fewer walls/corners, but still everything should fit. I hope I have entered all necessary information below?
Development Plan / Restrictions
Plot size – 308m² + 338m²
Slope – no (slightly sloping northwards, max. 1m over 28m depth)
Site coverage ratio – 0.4
Floor area ratio – 0.8
Building envelope, building line and boundary – marked or visible in the development plan
Edge development – yes, setback to the north 4m
Number of parking spaces – 2 (per plot)
Number of floors –
Roof style – gable roof with approx. 50cm (20 inches) eaves overhang
Architectural style
Orientation – ridge from west to east
Maximum heights / limits – eaves height: 4.5m (15 feet), ridge height: 9.0m (30 feet)
Other requirements – dormer max. 50% of eaves length and 1.5m (5 feet) below ridge
Clients’ Requirements
Architectural style, roof shape, building type
Basement, floors – no basement – 2 floors
Number of people, age – left: 2 each, right: 1 each
Space requirements on ground floor, upper floor
Office: family use or home office? – none
Number of overnight guests per year – 15 (toddlers → sofa bed)
Open or closed architecture – as open as possible
Conservative or modern design – modern
Open kitchen, kitchen island – open-plan kitchens
Number of dining seats – left approx. 3-4, right approx. 2-3
Fireplace – no
Music/sound system wall – yes
Balcony, roof terrace – uterraces below, dormer above (left 4m (13 feet), right 3.5m (11.5 feet)) with attached balcony
Garage, carport – no (technical building offsite / monopitch roof)
Utility garden, greenhouse –
Other wishes / special features / daily routine, happily also reasons why this or that should or should not be included
House Design
Who created the design – currently: “do-it-yourself”, possibly an architect if it cannot be made suitable.
What do you particularly like? Why? – I can well imagine living in it…
What don’t you like? Why? – too complicated in the utility room area / bathroom, also upstairs the staircase to the attic is difficult
Price estimate according to architect/planner: – for the shell including double casement window, an offer is expected by the end of March (based on the plans shown here)
Personal price limit for the house: not sure yet (open to almost everything).[ /I]
Preferred heating technology – [I]heat pump, photovoltaic system + battery, controlled mechanical ventilation, underfloor heating, possibly cooling via underfloor heating (geothermal heat pump possible?)
If you have to give up, which details/extensions
can you do without –
• large glass sliding door element on the ground floor right (private use) possibly omitted due to KfW40 standard
• instead of very high-quality finishings with fixtures (kitchen, bathroom, living room), something simpler (but good) is acceptable
• possibly the attic conversion (which cannot be rented out officially anyway)
cannot do without:
• bathtub
• washing machine not allowed in the bathroom
• controlled mechanical ventilation system partly in the utility room, so utility room on the ground floor is essential, ventilation unit for the upper floor is in the attic knee wall
Why did the design become how it is now?
Various drafts were discussed with family members (some are currently building themselves, some are building services engineers), discarded, and redesigned until it technically worked and we liked it—except for the minor issues mentioned below.
Since the bathrooms and kitchens of the two semi-detached units are on the shared wall (fire wall), it would be good if the general position does not change completely.
What is the most important/fundamental question about the floor plan summarized in 130 characters?
• Alternative to the very complicated utility room/bathroom layout (expensive, cramped) while keeping the rough layout of the open kitchen as it is. I like it because of the terrace facing south in front of kitchen and living room.
• better staircase solution
• lack of storage space upstairs
Plans will follow shortly…
K
knalltüte5 Mar 2020 19:22K
knalltüte5 Mar 2020 19:27This concerns the two plots at the very top, slightly highlighted in yellow.
Building envelope
K
knalltüte5 Mar 2020 19:30After more than 30 years, I tried using AutoCAD again, so please forgive any technical mistakes in the drawing.
This will also be my first house built by myself. I bought my old house from my parents over 20 years ago (it is more than 250 years old, pictures of it are in another thread...).
So once again: I do not have professional expertise (despite training as a draftsperson and about six semesters in civil engineering :-/).
K
knalltüte5 Mar 2020 19:40Oh, the terrace isn’t included yet: it will be on the south side, spanning the entire width, with a depth of about 3m (10 feet), made partly of stone slabs and partly of wooden planks.
The garden is small; I like to use the terrace or a deck chair on the small lawn and usually only read there on weekends during the summer.
If everything goes well, I could also imagine a small outdoor sauna (sauna barrel) for a maximum of 2 people.
The garden is small; I like to use the terrace or a deck chair on the small lawn and usually only read there on weekends during the summer.
If everything goes well, I could also imagine a small outdoor sauna (sauna barrel) for a maximum of 2 people.
K
knalltüte5 Mar 2020 19:45... by the way, this currently concerns only the floor plan on the right. The left side is being built by my brother, who is still working on optimizing it. However, if there are good suggestions for that side as well... very welcome.
Both residential units on the left are intended to be rented out. On the right, I will move into the ground floor (alone), and the upper floor there will also be rented out.
I am fully aware that small, high-quality apartments built to KfW40+ standards (expensive) do not generate a "profitable" return. Fortunately, that is not my main focus.
Both residential units on the left are intended to be rented out. On the right, I will move into the ground floor (alone), and the upper floor there will also be rented out.
I am fully aware that small, high-quality apartments built to KfW40+ standards (expensive) do not generate a "profitable" return. Fortunately, that is not my main focus.
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