Single-family house with stepped floor - Feedback/Discussion/Tips/Ideas

Hello dear forum community,

there are quite a few building novices, building experts, or those who want to become one here. We currently belong to those who want to become from the latter to the former. We are a young family with only one child so far, but we want to have a second child sooner or later.

Therefore, we would like to present you our draft here so that it can be immediately taken apart.

In advance: The drawing is the first draft, which we can change and for which we already have some ideas for changes.

For that:
1) The children's room on the ground floor is to become the master bedroom.
2) The master bedroom is to become the children's room accordingly.
3) The shower should be moved up, the bathtub down, accordingly the bathroom a bit larger, with a window, along the right side of the house to the lower exterior wall.
4) The utility room is to be virtually halved, remain in the middle, and possibly integrate the small storage room.

These were our ideas so far. What do you say?

Hello,

Those were our ideas so far. What do you think?

If you are not allowed to build two stories, you can of course circumvent this regulation by using a setback story (SG); in my opinion, however, it would be too large - if applicable.

Is it generally allowed to build in the Bauhaus style - why the setback in the SG towards the existing buildings? And - do you have an exemption that allows you to undershoot the distance areas to the neighbor, or what do the black building drawings to the left of the kitchen-living area mean?

I would be interested to know how much capital you are calculating for your design?

Best regards from the Rhineland

Does the recessed top floor have to step back on all exterior walls? From a purely structural perspective, it is rather problematic. It is required in the Berlin building regulations, but here it is approved everywhere without a recessed top floor on all sides.

I find the hallway on the ground floor too long and too narrow. There is no space for a wardrobe. I would arrange the access to the bedroom/bathroom differently, if possible.

I just realize that I might have needed to write a bit more.

The construction site is in a residential area where originally classic single-story semi-detached houses with extensions were built. Over time, various houses had their attics converted, others created living space above the garages, others again built single-story Bauhaus-style extensions behind the house, and overall different architectural styles have been more or less mixed. The construction in this form has been more or less approved by the planning office.

The setback distances to the existing buildings fit the property boundaries as far as necessary; on the left side, the existing building is our property.

The setback on the right side (3m) is necessary and mandatory due to the required distance to the neighbor. On the other hand, there is even an obligation to build an extension on the ground floor. The upper setback is due to the original building boundary; we are only allowed to extend further on the ground floor because the neighbor was granted that right based on our approval at that time. The setbacks at the front and left side are due to the style; one might even get an exception there, but we wanted to limit the missing setback to the staircase.

Because of the statics, the ground floor will be built with solid construction using a concrete ceiling, while the upper floor will be constructed using a lightweight timber frame.

Regarding the capital investment: we estimate about 180,000 EUR in pure construction costs including engineering services, but excluding land, garages, utility connections, and extras such as geothermal, fireplace, photovoltaic. Overall, we are at about 250,000 EUR plus land.

I leave the insulation and KfW calculation to a specialist who knows about this. This also involves the consideration of how the rooftop terrace fits in (on) the insulation.

We are probably about to reach the floor area ratio with the double garage, the existing building, and the newly to be developed area... Our budget doesn’t allow much more. Better something smaller (our requirements for the number of rooms are met) and still have 5 euros left at the end than to go into excessive debt. Better small but nice. We would like a little more... but, but, but...

The corner on the ground floor at the bottom right will definitely be revised. We don’t like it either. If there are new drawings, they will certainly follow.