Floor plan design: Single-family house with 4 bedrooms and an office, 160 sqm

Hello dear community,

we are a family of 5 members (2 adults, 3 children) and are currently planning to build a house. It is not so easy to find a floor plan with 4 bedrooms + office/guest room, and also have an affordable size. Therefore, we have tried several floor plans and look forward to receiving your feedback and comments. The latest version is now a compromise between construction costs and size. So it is more about getting the maximum out of the space. Of course, more would always be nicer, but unfortunately no more than about 160sqm is possible. We would then like to use the floor plan to get comparable offers from house building companies.

Thank you in advance!

Development plan/restrictions
Plot size: 550sqm
Building window: 12m x 20m
Slope: no
Floor area ratio: 0.2
Site occupancy index: 0.4
Number of floors: 2
Roof type: hipped roof
Style: classic urban villa
no development plan, §34

Requirements of the builders
Style, roof type, building type: urban villa with hipped roof, 2 floors without basement
Space requirement on ground floor, upper floor: approx. 150sqm (2 adults, 3 children)
Office: home office - 2 workstations
Guests per year: mainly grandparents, 2-3 times
Open or closed architecture: open
Conservative or modern construction: modern, open kitchen
Number of dining seats: 8
Fireplace: no
Further requirements:

[*]Open living/dining area and kitchen
[*]Technology/utility room large enough to do laundry and with external access
[*]Bathroom with double washbasin and preferably also T-layout
[*]Toilet with shower on the ground floor
[*]Office for home office, which can also be a guest room
[*]Possibility to accommodate a second small desk in the master bedroom or to have a second workstation (both work from home often)

House design
Who designed the plan: self-created based on some examples and inspirations from the internet. The windows are still placeholders
We are unsure about the bay window. We have now planned it to have a little more space for the dining table, especially when guests come over. Then there are quickly 10 people together. Also, this makes it easier to plan the 3rd children's room. The question is how the costs of a bay window compare to simply a somewhat larger floor area. Maybe someone is knowledgeable here. And whether other arrangements might be possible that use the space efficiently.
Price limit for the house, incl. equipment: 550k€ (with photovoltaics and ready to move in)
Preferred heating technology: heat pump

Ground floor
[ATTACH width="344px" alt="Erdgeschoss_erker.jpg"]84726[/ATTACH]

Upper floor
[ATTACH alt="Obergeschoss_erker.jpg"]84727[/ATTACH]

Site plan
[ATTACH width="340px" alt="Lageplan.JPG"]84728[/ATTACH]

I'll keep it short: Get some help, the draft has many issues. And you will only get comparable offers from homebuilders if you involve a professional (a.k.a. architect). Otherwise, you're comparing apples with Nutella and Hollandaise sauce.

Some notes on the floor plan: - Bay windows are generally expensive compared to simple shapes - You are wasting a lot of space in the middle of the living room/dining room/kitchen - The door to this room is randomly placed - Unnecessary traffic area to reach the rooms on the left side of the ground floor - Utility room planned without having any idea what all needs to go in there. If you always have to pass all the technology to get to the back (bottom of the plan) part of the room when doing laundry, that’s annoying. Generally, the room should be further away from the front door than the guest WC, because the likelihood that someone says "I need to pee quickly!" just before leaving is higher than someone saying "I need to do laundry quickly!" - Office: Just a note: no longer tax-deductible with a bed in the room - Many window sizes, harmonized neither in width nor position. The house will look accordingly from the outside. - The second desk upstairs in the dressing area is probably hardly usable because there isn’t enough space to sit properly in front of it with a chair. - The children's room at the top of the plan is long and narrow. We have a similar children’s room in our old building here, I find it impractical for furnishing. - One of your children is unfortunately a stepchild. Otherwise, it cannot be explained why two children are allowed to look into the garden while the third has the room facing the street and the access to the back lot. - Bathroom can be made significantly more compact - Hallway on the upper floor is enclosed inside with only some light from the stairs – it will never be bright upstairs.

As I last mentioned in , floor plans suitable for families with three children are, I believe, here with and with (where, in the example from , the plot situation with a rear annex is similar. And you can also nicely see there that the "bay window" is quite avoidable if you make the staircase more compact.

The latest status has now become a compromise between construction costs and size. So it's more about getting the maximum out of the space. Of course, more would always be nicer, but unfortunately, it can't be more than about 160 sqm. We would then like to use the floor plan to get comparable offers from homebuilding companies.

Please do not obtain "offers" from homebuilding companies with a self-stolen floor plan. Due to business reasons, they understand quite well how to make laypeople believe until the ink is dry that they have found the best price-performance ratio. That's how you can buy TVs, or, if you want, refrigerators. But not really houses. Unless you want to pay a tuition fee.

Bay windows are generally expensive compared to simple shapes

Not least because of the "bay window" follow-up costs, especially with hipped roofs (which is already firmly on the cut list for Tolentino's next house).

Office: Pure note: no longer tax-deductible with a bed in the room

If the tax advisor is a sleeping pill, yes.

If the tax advisor is a sleeping pill, yes.

How do you come to the conclusion that there is a tax advisor if there is no architect? From my experience, one does not necessarily imply the other, but the attitude of spending money on a planning/administrative service is usually consistent...

Do you currently have only one car and what does it look like for the future, since only one parking space is marked? Is it also legally clarified whether you only need one, and if it will be a carport whether it must not be set back 5m from the street?

Clarify these basics first, as this can have a big impact on the shape of your house.

Much has already been mentioned by .

Number of floors: 2
Roof type: hipped roof
Architectural style: classic city villa
no development plan, §34

I wonder what is actually set and legal here, and what is wishful thinking on your part.
With a high number of rooms, I always recommend a gable roof house for attic use.