ᐅ Floor plan for a single-family house with 200 m² living area, including a 75 m² granny flat / accessory apartment, a 140 m² basement, and a 56 m² garage

Created on: 12 Sep 2022 17:07
K
Koehler
Hello everyone,

I am planning to build a house. I might receive a share of the plot from my mother if she gets her own apartment (accessory dwelling unit) on the property (our relationship is excellent so far). In any case, there should be two separate units on one plot. (Yes, financing might be challenging…)

Zoning Plan/Restrictions (Requests from the Building Authority as there is no zoning plan)
Plot size: approx. 1050 m² (given in exchange for mandatory accessory dwelling unit on the plot)
Slope: no
Site coverage ratio: no zoning plan
Floor area ratio: no zoning plan
Building setback lines, building line, property boundary: no zoning plan, but the building authority requests at least 3 meters (10 feet) setback from the street
Edge construction: maximum 9.0 m (30 feet) for garages up to 3.0 m (10 feet) height
Number of parking spaces: 2
Number of storeys: one-story with a converted attic (2/3 of the lower floor may be max. 2.30 m (7.5 feet) high)
Roof type: building inquiry was for a gable roof with two small dormers
Architectural style: no specifications
Orientation: no specifications
Maximum height/limits: 9.0 m (30 feet)
Other requirements: residential building should not be larger

Homeowners’ Requirements
Architectural style, roof type, building type: hipped roof up to 2.3 m (7.5 feet) line at approx. 35°, above 2.3 m (7.5 feet) line between 10° and 22°
Basement, storeys: one-story with finished attic (wish: basement with bathtub)
Number of people, ages: currently 1+1 persons, 34 (me) and mother 58 (in the accessory dwelling)
Room requirements on ground floor, upper floor: main apartment 200 m² (2150 sq. ft.) + accessory dwelling 75 m² (807 sq. ft.)
Office: family use or home office? both home offices
Overnight guests per year: sometimes 2 adults + 2 children
Open or closed architecture: open plan
Traditional or modern design: rather modern design
Open kitchen, kitchen island: both units with open kitchen and kitchen island
Number of dining seats: 6 in main unit + 4 in accessory dwelling
Fireplace: yes, in both units
Sound/music wall: no
Balcony, roof terrace: not necessary
Garage, carport: (optional) garage only; no garage or carport for accessory dwelling
Utility garden, greenhouse: none
Other wishes/special features/daily routine, including reasons for certain choices:
  • No skylights
  • Solar panels later

House Design
Who designed the plan: do-it-yourself (myself)
What do you especially like? Why? Most walls overlap each other
What do you dislike? Why? Utility room and living room in the accessory dwelling because the living room is too small and the utility room too large
Estimated cost according to architect/planner: not yet available
Personal maximum budget for the house, including equipment: (total) 700,000 plus significant own work and family involvement
Preferred heating technology: fireplace and natural gas (available in the street)

If you had to give up, which details/extensions
-you can give up: 1. fully finished basement 2. garage 3. basement rough construction 4. pantry 5. kitchen island 6. indoor sauna 7. completed children’s room with bathroom 8. full upper floor finish
-you cannot give up: fireplace in both apartments

Why did the design turn out the way it did? For example:
Standard design from the architect? No
Which wishes were implemented by the architect?
My apartment:
  • Parents’ bedroom (one door only) + dressing room + private bathroom (shower + [optional large bathtub])
  • 3 children’s rooms (min. 15 m² (160 sq. ft.)) each with separate bathroom (shower + [optional bathtub])
  • 2 offices
  • Living room (min. 20 m² (215 sq. ft.)) with fireplace
  • Kitchen (min. 15 m² (160 sq. ft.)) + [optional kitchen island]
  • Dining room for 5 people
  • Bathroom downstairs + [optional shower]
  • 1 sauna inside (or outside)

Accessory apartment:
  • Standard layout with office

Additional wishes:
  • An extra room/hallway must be located between bathroom and living spaces
  • All rooms with windows (at least the bathrooms)
  • Laundry room (upstairs)
  • Garden access (north side)
  • More light/open space in entrance area
  • Pantry

A mix of ideas from various magazines…
What do you think is particularly good or bad about it?
Good: bedroom and laundry room upstairs so laundry does not have to be carried through the entire apartment, no costly skylights
All bathrooms have windows
Bad: utility room is too large and living room in accessory apartment too small

What is the most important/basic question about the floor plan, summed up in 130 characters?
  • Any fundamental mistakes in the plan?
  • Can the utility room be moved to the attic (not the converted attic)?
  • Garage directly on the property line?
  • Is (partial) basement with bathtub and/or garage financially feasible?

Floor plan of a single-family house with rooms, hallways, and utility areas


Floor plan of a house with master bedroom, three children’s rooms, bathroom, hallway, office, and garage.


Floor plan of a house with several rooms and a garage on the left; compass top left.


Aerial view of a plot with overlaid floor plan of the house


Multi-story gray house with red gable roof, many windows, black front door, and rectangular annex.


3D view: gray house with orange roof and separate garage.
S
SoL
12 Sep 2022 20:29
Gregor_K schrieb:

No one willingly plans for 3 kids’ bedrooms… 😉 I’ve been searching for good floor plans with 3 kids’ bedrooms for about half a year now, and it’s really not that easy. Since I have 3 children, I have no other choice. In my opinion, you’re still at the very beginning and should first consider your own needs. For 2 people, a house that big seems unnecessary to me.

Pff... 3 kids’ bedrooms is nothing serious yet...
We’re looking for 4 kids’ bedrooms and two home offices, since one of us is a teacher and has a home office contract. Good luck finding something like that 😀
G
Gregor_K
12 Sep 2022 20:32
SoL schrieb:

Pff... 3 kids’ rooms are still amateur league...
We’re looking for 4 kids’ rooms and two offices, since one is a teacher and the other works from home. Good luck finding anything like that 😀

Oh dear… There are exactly zero floor plans like that? 😱
W
WilderSueden
12 Sep 2022 20:32
Koehler schrieb:

I understand the criticism that I am currently one person planning for five, but I will only build once in my life and won’t plan and move every time something changes in life.

It’s your money and your time that you are investing in the house. You don’t need to justify yourself to us. The problem is that with almost 300sqm (3,230 sq ft) including a basement, you will likely spend a million. Do-it-yourself efforts are admirable, but you will probably spend the next few years on the construction site building rooms that won’t be used. And when you’re finished, you might meet someone online... unfortunately 200km (125 miles) away who doesn’t want to move. Or you might not even find the right partner because you’re always tied up with the building work. You’re not doing yourself any favors if you build now for eternity, with two saunas, children’s bathrooms, and so forth. But, as I said, it’s your decision.
D
driver55
12 Sep 2022 20:44
SoL schrieb:

Pff... 3 kids' rooms is still amateur league...
We’re looking for 4 kids' rooms and two home offices, since one is a teacher and has a remote work contract. Good luck finding something like that 😀
You can get anything for money! 😉 Mansions usually have many rooms anyway.
K
Koehler
13 Sep 2022 16:53
K a t j a schrieb:

I respect your DIY approach, but I strongly recommend handing the entire planning over to a professional. It’s too big a house to risk building incorrectly.
In my opinion, the budget is quite low.
Readers will likely be very skeptical about your available manpower. You can’t manage this alone, and even with family and friends it can become a bottomless pit. What exactly do you plan to handle yourself for 275 sqm (2,980 sq ft) plus 140 sqm (1,507 sq ft) basement?

Thank you very much for your honest criticism. So far, this is just my own draft, and I will definitely not do the construction planning myself. A technical draftsman/soon-to-be architect is planned to handle that.
The budget is indeed not very high, which is why I wanted to find out if I should already cut some things from my plan. You can’t just add a basement without careful consideration.
Family would help with groundwork, plumbing and drainage, and roofing. I would do masonry, electrical work (which I have learned), flooring, and painting myself. I haven’t found anyone else for the rest yet, so those parts would have to be done by contractors.
SoL schrieb:

The floor plans are a disaster.
No need to discuss the details; nothing works.
You have something like 30 small rooms, 100 corners, and doors, passageways, and cramped spaces everywhere.

No offense, but this belongs in the recycle bin and should be completely redesigned.

I’m afraid I don’t understand your argument. Which rooms do you suggest I remove? I find the rooms well-sized for 200 sqm (2,153 sq ft), and I don’t know anyone building a room without a door. Normally, each room has four walls — or should I build round rooms everywhere? Sorry, but with all due respect, your answer lacks further explanation. The only room with many doors is the walk-in closet. On the lower floor, I even have an open kitchen and an open living room — so that’s two fewer walls. Where exactly can I eliminate a wall?
11ant schrieb:

Should I lie and claim that all the “right” partners find fully built nests attractive, or be honest and open?

As far as I recall, we haven’t yet discussed that a “half-hipped roof” (Dutch gable) is somewhat born from a requirement to blend in. Structurally it’s not trivial and probably expensive.

I was told that a half-hipped roof is almost as complex to build as a gable roof with two dormers, but I don’t know enough about it myself.

Because of possible divorce, a prenuptial agreement is absolutely necessary.
I want to build my dream house, and I want to do it as well as possible. I know I have to make compromises everywhere, but I simply cannot afford a 5,000 sqm (1.24 acre) plot with a villa on top.
As an example that nothing is perfect: If you don’t want to see your parents, they should live at least 10 km (6 miles) away, but if you need them (babysitter), they should live no more than 1 km (0.6 miles) away. So I could just build a 5 km (3 mile) long wall around the property and open the door when I need them — a very interesting approach, honestly.
Apparently, your understanding of children’s rooms differs from mine: When children move out, should a part of the house be demolished each time?
The kids’ rooms could also serve as fitness studios, offices, guest rooms, libraries, storage, home theaters, reading rooms, relaxation rooms, labs, workshops, rehearsals rooms, etc.
I have had very different experiences in my circle of friends than you (unfortunately, the negative ones stick longer)...
Some planned with a partner; in case of separation, only money was wasted.
Some started building together; in case of separation, the loan was split and the house remained a ruin.
Some finished building; in case of conflict, the house was forcibly auctioned off -> no house, many nerves lost, and debts continue because foreclosure was below the loan amount.
Some built a house planning for two kids, but ended up with four.
If children are involved in a separation, things get much more complicated (the house usually becomes a minor issue).
Therefore, I can plan however I want, but it will always turn out differently. Most of my friends where things went well bought or inherited a house, had it built beforehand, or still rent; there is no golden path for the future.
I don’t want to continue the Lego-house thought experiment, as it misses the point of my floor plan planning.
As I said, the plot belongs to my mother. What I hadn’t mentioned but consider obvious is that we both want road access, a large garden, and a living room facing the street (south side). I’m sorry I hadn’t mentioned this before, but this planning flaw has been repeatedly criticized elsewhere.
ypg schrieb:

It’s more likely the regulations of the state building code you have to comply with.

To put it the other way around: only two-thirds of the floor area may be 2.30 m (7.5 ft) or higher under the roof. Check your plan: Did you succeed? At first glance at the small boxes it looks more like a two-story design.

Let’s get clear — YOU are asking and want an honest answer. So if you pretend your needs are something else, you’ll get wrong answers you can’t use. Planning empty rooms is completely off from your real situation: even the basement is full of placeholders... You’re basically vacuum-packing your desired future into a house.

In short: it’s not time yet for you to think about building a house.

1. Financially, it is currently unpredictable and rather risky
2. Building a house is nest-building, which should bind a _couple_ together further
3. Your budget is completely miscalculated and doesn’t match the house
4. The design is not mature

The orientation with the garage in the southwest is questionable. Has any site planning even been done or was it skipped? Where are the terraces? They aren’t included in the plan at all. Orientation of the rooms, entrance court, terraces, their integration, division of the property into two private areas... everything looks slapped on.

I have little experience with the grid used by the software, so I can’t judge the design itself. However, the walk-in closet stands out negatively, as does the too-small technical/laundry room, dark dining area with no windows, and a dark kitchen in the separate apartment. Many rooms’ sizes will inevitably create lots of dark areas in the middle of the house.

A somewhat larger Google Maps screenshot would be useful since you need to adapt to neighboring buildings.
I’d probably rotate the house, put a shed and terrace of the separate apartment in the back, the garage in front, driveway on the east side, and then terrace and garden in the southwest for the main unit. Then the house planning can begin properly.

Thank you very much for the comment about empty rooms — I expected that. The basement is filled only with placeholders because I don’t necessarily need it but would like to have it to reduce the load upstairs a bit: two offices, one hobby room for me and one for my wife, sauna, bathroom, relaxation room, storage, gym, laundry room, pantry, etc.
Regarding your four points concerning two of my questions, I would like to sincerely thank you. That’s very tough but honest criticism. At least now I know that I won’t build a basement or garage at first due to financial improbability. Thanks — I welcome this kind of comment, no matter the direction.
I have added a larger excerpt of the site plan image for the outdoor layout; there is no terrace planned yet (financial reasons), and for now everything will remain green. Later, we’ll see where we spend time the most. Small terraces were initially planned behind the house and between house and garage but will come much later.
Gregor_K schrieb:

No one willingly plans three kids’ rooms... 😉 I’ve been looking for good floor plans with three kids’ rooms for about six months, and it’s really not easy. Since I have three kids, I have no choice. In my opinion, you are still at the very beginning and should first think about your own needs. For two people, such a large house is unnecessary from my point of view.

Honestly, I don’t really understand your comment. Did you build a house as a couple, then another one after the first child, and then yet another for the second child? And now you’re building the next house for three kids? In my family and circle of friends, you plan first and then build. The number of kids’ rooms then ends the planning — unless something unplanned happens (which always does).

General:
I will now stop the family planning topic here because you all have different experiences which you have shared. Of course, I welcome further comments on how to improve the plan, but despite the objections, I will continue to plan with three extra rooms (kids’ rooms) because I don’t earn enough money to afford another plot and house later on.

I hope the further input has been helpful.

Aerial view of a plot area with multiple buildings, parcels, and a construction plan in the center.
11ant13 Sep 2022 17:27
Koehler schrieb:

I was told that a clipped gable roof is almost as complex as a gable roof with two dormers, but I’m not familiar enough with this myself.

Regarding your argument about spaciousness for a slightly taller-than-average homeowner, the main question is actually about the “efficiency” of this roof type—and in that respect, I don’t see it as in any way superior to a gable roof, especially considering that the construction costs are only slightly higher. If the clipped gable is supposed to provide space comparable to dormers, then we are talking about much higher costs (or as the hero would say: “absurdly expensive”).
Koehler schrieb:

I have had very different experiences within my circle of friends than you [...] Both are building a house and planned for two children, and now they have four.

So basically, are you preparing yourself (roughly and with a safety margin) for an average fertility rate in your future household based on your circle of friends (or depending on the marriage contract, rather for the “household partner”)?
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