ᐅ Floor plan of a detached single-family house with 2,585 sq ft, including a 807 sq ft granny flat and a garage

Hello everyone,

we want to build a house. I was able to get the plot from my mother, and in return, she will have her own apartment (granny flat) within the house. There will be two separate entrance doors to the house as a precaution. My previous post was here, but personal, political, and building authority issues have caused significant delays, which have had both positive and negative effects.

Development Plan / Restrictions (Requests from the Building Authority since there is no formal development plan)
Plot size: approx. 1300m² (at least 1/4 for the granny flat)
Slope: none
Floor area ratio: no formal development plan
Site coverage ratio: no formal development plan
Building envelope, building line and boundary: no formal development plan, but the building authority requests at least 3 meters (10 feet) from the street
Peripheral construction: maximum 9.0 m (30 feet) for garages up to 3.0 m (10 feet) high
Number of parking spaces: 2
Number of floors: two floors without a finished attic
Roof style: preliminary building application was for a gable roof with no dormers; according to the building authority, maximum roof pitch is 35°
Architectural style: no specification
Orientation: no specification
Maximum height/limits: 10.20 m (33.5 feet) (in discussions with the building authority, please not higher than 10.5 m (34.4 feet))
Other requirements: residential building should not become larger

Homeowners’ Requirements
Architectural style, roof shape, building type: gable roof
Basement, floors: 2 full floors
Number of people, age: currently 1+1 persons, 36 (myself) and mother 60 (granny flat occupant)
Space requirements on ground floor and upper floor: self: 240m² (2583 sq ft) + granny flat: 75m² (807 sq ft)
Office: family use or home office? both home office
Guests per year: occasionally 2 adults + 2 children
Open or closed design: open design
Traditional or modern construction: rather modern construction
Open kitchen, kitchen island: both with open kitchen and kitchen island
Number of dining seats: 6 own + 4 in granny flat
Fireplace: yes, in both apartments
Music/stereo wall: no
Balcony, roof terrace: not necessary
Garage, carport: garage, no garage or carport for granny flat
Utility garden, greenhouse: no
Other wishes / special features / daily routine, including reasons for certain preferences:

• No skylights
• Solar panels later
• Option for holiday apartment at a later stage

House Design
Who designed it: DIY by myself, now finalized by architect
What do you like most and why? Majority of walls overlap
What do you dislike and why? Now only the chimney remains in the granny flat or upper floor
Price estimate according to architect/planner: not available yet
Personal budget limit for house including features: (total) 700,000 + significant own contribution and family help
Preferred heating technology: fireplace and air heat pump

If you have to give up something, which details/extensions
-can you give up: second floor and garage will be built later
-can you not give up: fireplace in both apartments

Why is the design as it is now? e.g.
Standard design by planner? Plan from Virtus, Team Massivhaus, and own ideas
Corresponding / which wishes were implemented by the architect?
My apartment:

• Parents’ bedroom (only one door) + dressing room + private bathroom (shower and large bathtub)
• 3 children’s rooms (min. 16m² (172 sq ft)) with separate bathroom (shower + bathtub)
• 2 offices
• Living room (min. 20m² (215 sq ft)) with fireplace
• Kitchen (min. 15m² (161 sq ft)) + kitchen island
• Dining room for 5 persons
• Bathroom downstairs + shower
• 1 sauna inside in the attic (or outside)

Granny flat:

• Standard with office

Wishes:

• A separate room/hallway between bathroom and living areas
• All rooms to have windows (at least the bathrooms)
• Laundry room (upstairs or attic)
• Access to garden (west and north)

What do you think makes it particularly good or bad?

• Good: almost symmetrical arrangement of windows and doors
• Separation into up to 4 sections possible later in case of emergency
• Bedroom and laundry room upstairs to avoid carrying laundry through whole apartment
• No skylights
• All bathrooms have windows

Bad:

• Office downstairs can only be used as bedroom if storage is built under the stairs
• Since the driveway is on the south side, the house has now been rotated

What is the most important/basic question about the floor plan in 130 characters?

• Was anything overlooked in the plan?
• Where should the chimney in the granny flat be placed?
• Is the dressing room too large?
• Should the garage be rotated?