ᐅ Floor Plan Design for a 145 sqm Single-Family Home – Requesting Feedback

Created on: 18 Feb 2020 22:59
J
jan berlin
Dear House Building Forum,

We are currently planning the floor layout for our single-family home and welcome any advice and tips. We are very grateful for your help and suggestions.

I have attached the site plan as well as the floor plans for the ground floor and upper floor. The positioning of the windows can be disregarded.

Unfortunately, we have no further ideas on how to resolve the issues with the current layout and are really hoping for your support.

Here is the completed questionnaire:

Development Plan / Restrictions:
Plot size: 830sqm (9,000 sqft)
Slope: no
Building coverage ratio: no development plan
Floor area ratio: no development plan
Building envelope, building line, and boundaries: no development plan
Edge development
Number of parking spaces: 2
Number of floors: 2 full stories permitted according to §34BGB
Roof type: gable roof (for photovoltaics, with 2m (6.6 ft) standing height in the center)
Architectural style
Orientation: street on the east, garden on the west
Maximum heights / limits
Additional requirements

Client Requirements
Architectural style, roof type, building type: 2 full stories with gable roof
Basement, floors: no basement
Number and age of residents: 3 persons (41, 37, 2), plus one additional child desired
Space requirement on ground/upper floor: approx. 145sqm (1,560 sq ft) total
Office: Family use or home office? The office is a retreat and workspace for the man of the house
Guests per year: 2-3
Open or closed architecture: open and bright
Traditional or modern construction: rather naturally modern
Open kitchen, kitchen island: open kitchen with island (peninsula also welcome)
Number of dining seats: 4-6 (expandable)
Fireplace: yes
Music/stereo wall: no
Balcony, roof terrace: no
Garage, carport: carport for 1 car
Kitchen garden, greenhouse
Other wishes / special features / daily routine, also reasons why something should or should not be included:
Prefer bathroom on the upper floor above the utility room for laundry chute, kitchen in the east, living area in the west as we are mostly home in the evenings
The right neighbor’s house is directly on the street; on the left side there is only a garden plot. There is a nice open view to the west.

House Design
Designed by:
- Planner from a construction company and ourselves
What do you particularly like and why? Dining and living facing the garden, natural lighting in ground and upper floor hallways, the idea of a window seat in the living/dining area but unsure where exactly?
What do you not like and why? Layout of living/dining (feels too wide), kitchen row with island too small, office could ideally face west (if possible), kitchen with light from the east (if possible)
Estimated cost according to architect/planner: pure house cost 260,000 Euro
Personal price limit for the house including fittings: 260,000 Euro
Preferred heating technology: geothermal heat pump

If you have to forego something, which details or extras
- Can you do without: fireplace
- Cannot do without: open, bright floor plan

Why was the design created as it is now? For example:
The design was proposed by the building planner (not an architect) and adjusted based on our feedback.
What do you consider particularly good or bad about it?
The general arrangement of rooms by cardinal direction is good. Natural lighting on ground and upper floors is good.
We don’t like the width of the living/dining area. It creates a large empty space in the middle since we want to have a view of the garden from the couch.
We prefer a straight or L-shaped staircase. No U-shaped staircase, unless with a landing.

What is the most important / fundamental question about the floor plan, summarized in 130 characters?
Are improvements possible and are there maybe completely new ideas for the floor plan?

Thank you very much and best regards,
Jan
J
jan berlin
19 Feb 2020 12:08
Raising the raw concrete ceiling on the ground floor does not cost extra with our builder, and as residents of an old Berlin building, we would like to keep that.

The note about the toilet flush being opposite the sofa is correct. I hadn’t seen that before. We are building with aerated concrete on the exterior and calcium silicate brick on the interior for the acoustically sensitive walls.

I am open to completely redesigning the floor plan.
J
jan berlin
19 Feb 2020 12:16
I have corrected the budget details as I had misunderstood them in the questionnaire.

Currently, we are estimating a total of 360,000 Euro for the house, including additional construction costs, exterior landscaping, kitchen, and so on. The pure construction costs for the house, including painting and flooring, are about 300,000 Euro. The plot is fully serviced.

The plot with all additional purchase-related costs and demolition is calculated separately.

Do you think this budget is too tight?
Y
ypg
19 Feb 2020 12:24
jan Berlin schrieb:

Raising the structural ceiling on the ground floor doesn’t cost extra with our builder, and as residents of an old Berlin building, we would like to keep it.

Then you would have to slightly adjust your living area to fit a staircase. You’d end up with about 160 sqm (1,722 sq ft) and a roughly $30,000 higher house price or so. A nice side effect: the children's rooms can stay the same size because there’s more space left over for a storage room. That’s on the topic of: does it come at no extra cost.
M
Matthew03
19 Feb 2020 12:29
Where is the plot located? Use the land prices as a reference to roughly estimate the price level of the construction contract, since it will adjust accordingly.

Very roughly, you can expect around 2,000 euros per square meter (2,000 euros per square meter) plus additional costs such as kitchen, garage, landscaping, and materials for any electrical installations (?).
= approximately 290,000 plus 40,000 + 15,000 + 25,000 + 20,000 + (?) + buffer
= about 390,000 plus buffer... others will probably budget even more. So yes, it’s a bit tight.
J
jan berlin
19 Feb 2020 12:49
Matthew03 schrieb:

Where is the plot located? Use the land prices as a reference, then you can roughly estimate the overall building cost since they tend to adjust accordingly.
Very roughly, you can expect around 2,000 euros per square meter plus additional costs + kitchen + garage + landscaping + materials for any electrical installations (?)
= roughly 290k plus 40k + 15k + 25k + 20k + (?) + buffer
= about 390,000 plus buffer... others probably include even more. So yes, it’s a bit tight.

Thank you for the breakdown. We are building in Brandenburg. Prices there are still closer to 1,800 euros per square meter.
We don’t want a garage, just a carport.
But you’re right. Maybe we should factor in a bit more buffer.
kaho67419 Feb 2020 13:03
jan Berlin schrieb:

- We have a structural height of 3m (10 ft) on the ground floor, which results in a ceiling height of about 2.75m (9 ft).
3m (10 ft) in the shell stage. That’s going to make the staircase interesting. On top of that, the floor structure still needs to be added – I’m guessing underfloor heating? What is the final floor-to-floor height? Around 3.10m (10 ft 2 in)? Until you can specify that exactly, it’s practically impossible to make any recommendations.