ᐅ Corner plot with a secondary apartment / granny flat

Created on: 25 Oct 2024 16:35
H
Hausmma
Development Plan / Restrictions
Plot size 537 sqm (5780 sq ft)
Slope no
Site coverage ratio 0.35
Floor area ratio
Building area, building line and boundary 14.42/15.00 × 13.52/17.56 meters (47.3/49.2 × 44.4/57.6 feet)
Edge development Garages are allowed within the side setback areas
Number of parking spaces 3
Number of floors 2
Roof type gable roof
Architectural style modern, simple
Orientation south
Maximum height/limits ridge height 10.5 m (34.4 ft)

Site plan of a plot with dimensions, outlines, and adjacent buildings


Clients’ Requirements
Architectural style, roof type, building type 2 full floors, classic gable roof
Floors 2
Number of occupants 2 adults over 40 + 2 children (3 and 16), separate apartment: 1 person under 70
Ground floor room requirements: living/dining + L-shaped kitchen, guest toilet, utility/technical room
Upper floor: 3 bedrooms, 2 offices, 2 bathrooms, laundry room
Separate apartment 3 rooms: living/dining, kitchen, bathroom, bedroom, small guest room
Office: 2 home offices
Overnight guests per year: separate apartment 10 times
Open or closed architecture
Conservative or modern design
Open kitchen with island: semi-open, not directly visible from living area
Number of dining seats 6
Fireplace no
Music/soundproof wall no
Balcony, roof terrace
Garage, carport at least 1, preferably 2
Utility garden, greenhouse desired
Additional wishes/special features/daily routine separate terraces; both want sunlight

Ground floor plan of a house with garage, terrace, living room, kitchen, bedroom, bathroom, WC

Floor plan of a single-family house with living room, kitchen, bathroom, entrance hall, and garage


House Design
Designer: Architect
What is particularly liked? The bright kitchen in the separate apartment
What is disliked? Long narrow hallway, living/dining area in the main residence
Estimated cost according to architect/planner: 650
Personal price limit for the house, including fixtures: 700
Preferred heating technology: heat pump

If you have to give up something, which details/extensions
- can be foregone: the second garage

Hello everyone,

After reading a lot here and planning for three months now, I’m trying to get some help.
The plot is complicated, maybe a bit narrow to also fit a separate apartment on the ground floor.

We are unsure how to “split” the plot.
Who should get the west or east side?
Which street should the house face?
The 5.5 m (18 ft) setback area on the north side suggests itself as the driveway/parking area. Also, no one wants a north-facing garden.
We all want sunlight somehow, but with further construction progress on other houses (marked in red) and the low sun angle, hardly any sun reaches the southern area.
The separate apartment really only needs a sunny terrace (because mowing the lawn will get harder with age).

I’ve simply added the architect’s two drafts here.
Hand-drawn sketch of plot and building plan with boundaries and building outline
H
Hausmma
29 Oct 2024 11:49
hanghaus2023 schrieb:

Why not place the concrete point (CP) at the boundary? Wall panels and beams for load transfer. Also, no wall at the boundary saves space.

eckgrundstueck-mit-einliegerwohnung-673440-1.png

Because the 1m (3.3ft) distance must be kept for planting purposes.
Then at least car doors will only hit a hedge.
Y
ypg
29 Oct 2024 11:58
hanghaus2023 schrieb:

Why not place the carport on the boundary.
Not allowed.
hanghaus2023 schrieb:

Wall panels and beam for load transfer.
Well, how something is executed is up to the architect to further plan according to the original poster’s suggestions. I only have 24 hours in a day, after all.
hanghaus2023 schrieb:

OK, but then that’s a different floor plan on the ground floor.
Ah, now I understand. I rotated the staircase but didn’t take an updated screenshot.
Floor plan of a house with carport, multiple rooms, open living area, hobby granny flat and hallways.
Y
ypg
29 Oct 2024 12:08
Oh dear. This happens when north is not at the top.
It's a pity, I had based it on the architect’s drawings.
Unfortunately, yours does not work because of the angle at which the photo was taken.
Hand-drawn site plan: blue polygon, red outlines, yellow hatching, north arrow
H
hanghaus2023
29 Oct 2024 12:14
It's really a pity that the design by @ypg is not within the building plot.

But the small upper floor is mandatory anyway due to the budget.

Floor plan of a building with a blue-marked interior area and a red line through the middle.


Who is supposed to maintain the hedge in the strip next to the garage? This is exactly the reason why boundary building is done.
11ant29 Oct 2024 12:30
ypg schrieb:

I have been experimenting a bit.

Your building layout makes me wonder if a corner-attached mother-in-law unit, like the one used by @KingSong https://www.hausbau-forum.de/threads/meinungen-zu-unserem-grundriss-entwurf-erwuenscht.23977/page-9#post-224438, might fit well here.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
H
Hausmma
29 Oct 2024 12:53
11ant schrieb:

Your building massing makes me think that a corner-attached mother-in-law unit, like the one by @KingSong https://www.hausbau-forum.de/threads/meinungen-zu-unserem-grundriss-entwurf-erwuenscht.23977/page-9#post-224438, might also work well here.

Yes, I have thought about that too – something in an L-shape.

I will take another look at the thread.

But always keep in mind:
Two roofs are also expensive / gable roof?
High built-up area (site coverage ratio 0.35)