Planning of a single-family house (basement + ground floor + upper floor) on a 480m² plot

I haven’t looked at the floor plan in detail yet, but you will definitely get feedback from the floor plan experts here. Basically, I still think it’s great that you’re bringing this up so "early" here. What I would generally recommend to you:

- Don’t go to the architect with a drawn plan. The risk is high that it will just be copied and technical defects will be fixed.
- Only go with a room program and wishes with priorities. You pay the architect for creative planning anyway.
- Read through some threads/floor plan discussions here. Also the thread about additional construction costs.
- Recalculate your budget.

So apart from some technical challenges with your floor plan, you can cross out the 2,500€/sqm here. Calculate with 3,000 to 3,500€/sqm if you want to push it through. Cost drivers are balconies, bay windows, overbuilt parts, etc.
As an example, overbuilding the garage. To prevent cold from the garage passing through the components into your house, you either have to include the garage in the thermal envelope, or decouple/insulate the contact points. Flat roof bay windows often need their own flat roof, often with greenery, and must be insulated and sealed.

The place will cost you over 1 million in BY. Because usually with a place like this, there are other demands as well. The "representative" staircase won’t be an ordinary 08/15 terraced house staircase made of beech with a beech railing. Probably with solid oak steps and glass railing or wire cable railing. There are nice things on Pinterest. But then instead of 5,000, the railing alone costs 15,000 (numbers pulled out of thin air).

I know I’m a bit of the party pooper in your thread here. But it doesn’t make sense to build a castle in the air and discuss when you can’t actually implement it afterwards.

From the front, it could look like this (but with a double garage instead of a carport):

… the mainstream townhouse…

Criticism welcome!

Is the living room in the hallway?
hm, I would say: the 50000€ for an architect would be very well invested.

Do not draw any placeholder furniture. Use the ones you have or want in scale

Dining as furnished
Kitchen? Really like this or is it just because of the stairs
Such a cramped bedroom and the narrow corridor to the shooting slit on the upper floor

Take the pictures, create an exact room program
Bedroom bed with the dimensions
Distance bed - wall
6 m running wardrobe. Dressing room necessary, maybe, no

is already too late. The links are automatically detected and reported exactly at the moment they are sent. Everything as usual... no links... no warnings.

Phew! That’s almost as bad as my first attempts here. You can’t build over the stairs like that, at most 1-2 steps depending on the room height. These are all tight tunnels you want to build there. That doesn’t work. The straight staircase won’t have the effect you want either. I would also recommend going to the architect with a wish list, but wherever he thinks it will be expensive, he should immediately consider a cheaper alternative without needing a completely new floor plan.

Question to @Würfel, how many square meters does your bathroom on the upper floor with sauna have?

Regarding fitness: I see it the same way as Würfel, for me it’s also about the heat development. I would still place it in the basement. Again, question to Würfel, how many square meters does your fitness area in the basement have?

My bathroom is 24 sqm and I already find that quite generous. Our freestanding tub was supposed to be a eye-catcher and therefore it also needs space. Your now planned 27 sqm are quite large, I would rather give more to the bedroom! About the cost of the sauna: We got a high-quality custom sauna including bio stove, delivery and installation for €15,000 four years ago. And I live in the most expensive city in Germany. So it really doesn’t take more than that...

Fitness has 45 sqm for us. We need that because I like to work out with friends and need a large area where we can “tumble around.” I would say you can also get by with half of that. And anyone who doesn’t is simply making another wonderful excuse not to exercise at home :p Rick lives in other dimensions, so us normal folks shouldn’t orient ourselves by him. My cross trainer from Kettler only cost €1,500 and came down the stairs and through a normal door without any problem with two strong men. And it’s completely enough for me! By the way, we have floor mats on about 25 sqm of the 45 sqm. The underfloor heating only runs a little bit in the dead of winter. And it works.

About your floor plan: Unfortunately, I don’t like it at all. The living room will be pitch dark. The narrow terrace door is also under a balcony, which makes it even darker. On the other hand, you have a great view of the front door from the sofa. So it will never be cozy!! Kitchen and dining area are rather narrow though. The bathroom on the ground floor is a bit too big for guests. Upstairs the bedroom is too small, but there is an immense amount of traffic area. You won’t use all those balconies, but you have to pay for them, maintain them, renovate them eventually, etc.

I would also go to an architect.