ᐅ Single-family house floor plan on a sloped lot with terrace / roof terrace

Hello!

Thank you in advance for your support!

Development Plan / Restrictions
NRW, development plan from 1964, few specifications (e.g., no height limits, no description of attic), maximum roof pitch 10 degrees
Plot size: 509 m² (5479 ft²)
Slope: Yes, sloping down from the street to the rear, about 2.5 m (8 ft) height difference, mostly level at the front
Site coverage ratio: 0.4
Floor area ratio: 0.7
Building envelope, building line and boundary: see site plan. Lower + upper rectangle with thick red frame: garden level including basement; upper rectangle only: full floor ground level (from street); garage to the right
Surrounding buildings: see site plan
Number of parking spaces: 1 garage (for bicycles), 1 parking space in front with charging station
Number of floors: 1 garden level + 1 full story (ground floor from street) + attic (according to 1962 building regulations – only 1/3 of the floor needs to have a clear height under 2.50 m (8 ft 2 in))
Roof type: gable roof with 10-degree pitch, photovoltaic panels
Architectural style: modern
Orientation: garden faces west
Maximum heights / limits: none
Additional requirements: none
The plot is completely on a slope, so there is also a view of the valley / trees / city from higher up

Client Requirements
Style, roof type, building type: simple, modern single-family house, but not looking like a “new build block”
Basement, floors: three (garden/basement, ground floor, upper floor)
Number of people, ages: 4: 41, 40, 6, 3
Space requirements on ground floor: open living / dining / kitchen, storage room, guest WC
Space requirements on upper floor: office/guest room, guest WC, bathroom (with sauna), walk-in closet, master bedroom
Space requirements in basement: 2 children’s rooms, one office/guest room, HVAC room, utility room, cellar, children’s bathroom
Office: family use or home office? Both – we regularly work from home and have frequent phone calls
Number of overnight guests per year: parents/in-laws approx. 10 times per year for 3-4 days, other guests (mostly with children) approx. 10 times per year for 2-3 days
Open or closed architecture: semi-open
Conservative or modern construction: modern but warm
Open kitchen, kitchen island: open kitchen, half island coming from the wall near the terrace
Number of dining seats: table 90 cm x 200 cm (35 in x 79 in), usually 6 chairs, but also fits 10-12
Fireplace: yes, centrally located in the living/dining area
Music / stereo wall: minimal space, just a record player somewhere, no TV but retractable screen
Balcony, roof terrace: balcony-like terrace on ground floor (due to approx. 2.5 m (8 ft) drop to garden), outdoor stairs to roof terrace
Garage, carport: one garage for bicycles, one parking space with first meter of garage roofed, including electric vehicle charging
Utility garden, greenhouse: no, at most vegetables / herbs
Additional wishes / special features / daily routine, including reasons for preferences or exclusions

House Design
Designer: architect, but drawing signed off by me because the last plan needs several changes that are not yet incorporated (I would appreciate feedback)
What do you like most? Why?
- Entrance: spacious, with a clear view through the house right away
- Living room: lots of outside brought inside, terrace allows for plenty of outdoor living
- Upper floor: wellness oasis with roof terrace (and the ability to access roof terrace comfortably outdoors on all sides)
What do you dislike? Why?
- Possibly a long corridor in the basement?
- Possibly room layout on upper floor, in particular the master bedroom
- Possibly space for furniture in living room
Cost estimate by architect/planner: not yet discussed
Personal price limit for house including fittings: 1–1.2 million EUR
Preferred heating technology: heat pump

If you had to give up certain details or extensions
- What could you do without? Outdoor stairs?
- What is indispensable?

Why is the design the way it is? Multiple rounds with architect – development plan restricts strongly. With a relatively small plot, we wanted to keep as much garden space as possible.
Which requests were implemented by the architect? One linden tree will be preserved, the area in front of the house and on the front left will be built up, followed by an earth ramp leading down into the garden from the left side.
What do you think makes it particularly good or bad?

What is the main / fundamental question about the floor plan in 130 characters? Answer: Do you have improvement suggestions? What do you like, what should we reconsider? What costs a lot, what can be saved?

Thanks for honest feedback and apologies for the images – they come directly from my lightweight CAD tool...

Thank you for your help – I’m looking forward to your input!

Thanks and best regards,

Tobias

Site plan

Upper floor

Ground floor

Basement