ᐅ Is a bungalow with a basement practical for a single-family home that includes a 60 m² office?
Created on: 28 Jun 2021 21:59
J
jjoschyy
Dear Building Forum,
I am at the very beginning of planning a single-family house. The following framework conditions apply:
Does this proposal make sense, or would a two-story single-family house of about 150m2 (1615 sq ft) be more suitable for the plot? The office would then be on the upper floor but would have to be smaller. The main advantage of this option would be the increased garden area.
I am aware that all of this is still very rough. My first goal is to find out which possible options exist.
Many thanks in advance for all tips and advice.
I am at the very beginning of planning a single-family house. The following framework conditions apply:
- Land plot available, all roof styles and building types permitted
- Construction budget: 500,000 EUR including additional costs and kitchen
- Living area 115m2 (1240 sq ft)
- Office with 60m2 (645 sq ft) (single room)
- Double garage
- If possible, KFW 55 standard
- Since the plot is relatively large (712m2 (7665 sq ft)), a bungalow could be placed
- The bungalow would have a relatively small but sufficient living area
- The bungalow will have a full basement, which except for the "office" will be used as a utility cellar
- The office will be the only basement room equipped with heating
- Bungalow: 115 * 2500 => 287,000 EUR
- Basement: 115 * 750 => 86,250 EUR
- Additional costs: => 74,650 EUR (20%)
- All essentials for daily living on one level, especially good when getting older
- Office located cooler in summer than in an upper floor
- No sloping ceilings in the office
- Technical room can be placed in the basement
- Additional storage and utility space in the basement
Does this proposal make sense, or would a two-story single-family house of about 150m2 (1615 sq ft) be more suitable for the plot? The office would then be on the upper floor but would have to be smaller. The main advantage of this option would be the increased garden area.
I am aware that all of this is still very rough. My first goal is to find out which possible options exist.
Many thanks in advance for all tips and advice.
Own (probably incorrect) cost estimate:
Option 1:
Bungalow: 115 * 2500 => 287,000 EUR
Basement: 115 * 750 => 86,250 EUR
Additional costs: => 74,650 EUR (20%)
Total: 447,500 EUR
Option 2:
House: 150 * 2500 => 375,000 EUR
Concrete slab: => 20,000 EUR
Additional costs: => 79,000 EUR (20%)
Total: 474,000 EUR
Option 1:
Bungalow: 115 * 2500 => 287,000 EUR
Basement: 115 * 750 => 86,250 EUR
Additional costs: => 74,650 EUR (20%)
Total: 447,500 EUR
Option 2:
House: 150 * 2500 => 375,000 EUR
Concrete slab: => 20,000 EUR
Additional costs: => 79,000 EUR (20%)
Total: 474,000 EUR
N
nordanney29 Jun 2021 10:27You won’t be able to build the basement with your €750. The cost will be close to the price per square meter of living space, because it actually counts as living area.
It is within the thermal envelope, so it must be properly insulated. Heating is also required, as well as electrical installations. You also need an adequate ceiling height, and possibly windows for natural lighting. There will be more extensive earthworks than just for a slab foundation.
If you read it like this, you’ll realize that I could have described an upper floor with my basement description as well.
It is within the thermal envelope, so it must be properly insulated. Heating is also required, as well as electrical installations. You also need an adequate ceiling height, and possibly windows for natural lighting. There will be more extensive earthworks than just for a slab foundation.
If you read it like this, you’ll realize that I could have described an upper floor with my basement description as well.
If you want a basement with living-space quality, it costs about the same as living space, roughly €2500 per square meter.
But if you don’t want that: you want a basic basement with an office in one corner.
You can exclude your basic basement from the thermal envelope and make one room in the shell slightly more comfortable, unofficially turning it into a living space. An infrared heater could serve as a heating solution.
But honestly: who needs 115 square meters (1235 square feet) of basement and wants to spend time in a basement room? That much storage space isn’t necessary.
You have to be able to afford planning a 60 square meter (645 square feet) workshop. I usually calculate €1000 per square meter (≈ $109 per square foot) for basement costs, which would be €115,000 (≈ $125,000) for workshop and basement rooms. For that amount of money, I would honestly choose a different construction approach, call up Plan B, and/or rent a shed in a nearby community for the years I need it. The 115 square meters (1235 square feet) of claimed living space is rather modest in comfort anyway, so personally, I would create more living space instead of sinking money into the basement.
If you add a basement under 80 square meters (860 square feet) of ground area or give the basement living-space quality (if needed and properly planned), the situation would look different.
Maybe also consider an outbuilding (shed) if permitted.
But if you don’t want that: you want a basic basement with an office in one corner.
You can exclude your basic basement from the thermal envelope and make one room in the shell slightly more comfortable, unofficially turning it into a living space. An infrared heater could serve as a heating solution.
But honestly: who needs 115 square meters (1235 square feet) of basement and wants to spend time in a basement room? That much storage space isn’t necessary.
You have to be able to afford planning a 60 square meter (645 square feet) workshop. I usually calculate €1000 per square meter (≈ $109 per square foot) for basement costs, which would be €115,000 (≈ $125,000) for workshop and basement rooms. For that amount of money, I would honestly choose a different construction approach, call up Plan B, and/or rent a shed in a nearby community for the years I need it. The 115 square meters (1235 square feet) of claimed living space is rather modest in comfort anyway, so personally, I would create more living space instead of sinking money into the basement.
If you add a basement under 80 square meters (860 square feet) of ground area or give the basement living-space quality (if needed and properly planned), the situation would look different.
Maybe also consider an outbuilding (shed) if permitted.
jjoschyy schrieb:
Does the suggestion make sense, or would a two-story single-family house of about 150m2 (1,615 sq ft) be more suitable for the plot?To answer that, you would need to know your ages, whether children are a factor, how many people will live in the future house, and if more are expected to join...Also: are the 500,000 meant to cover only the house including additional construction costs, or does that budget also include the land? Is the land already paid for, or why is a house of a size considered only “sufficient” being planned, which can’t even accommodate an office in its modest size?
Of course, you should weigh several options, but it’s best not to complicate things too much with exotic considerations.
Keep in mind that with a bungalow, you will have a correspondingly large area under the roof. We have a half-hipped roof and easily about 70 square meters (750 square feet) just in the central corridor.
It might be a good idea to place your "office"/electronics workshop under the roof, insulate the roof properly so it doesn’t get too cold, and then divide the space into small sections.
This way, your electronics stay dry, and you save the expense of a costly basement. You’ll have plenty of storage space upstairs. Just a small staircase leading up is enough. For a technical room, 8 square meters (86 square feet) will be sufficient.
It might be a good idea to place your "office"/electronics workshop under the roof, insulate the roof properly so it doesn’t get too cold, and then divide the space into small sections.
This way, your electronics stay dry, and you save the expense of a costly basement. You’ll have plenty of storage space upstairs. Just a small staircase leading up is enough. For a technical room, 8 square meters (86 square feet) will be sufficient.
Is the workshop only used occasionally as a hobby, or also professionally? If it’s just for hobby purposes and mainly for electronics work, then 60m2 (650 sq ft) is quite large. Even 30m2 (320 sq ft) seems a lot for that.
Perhaps option 3 could be a two-story single-family house with a small office, no basement, and the workshop located in the double garage. If possible, the garage could be built a bit longer. Alternatively, the workshop could be a separate room attached to the back of the garage.
Of course, it depends on how often the workshop is actually used and whether it really needs to have living space standards (heated).
Alternatively, as mentioned before, if possible, the workshop could be built separately as an outbuilding (shed).
Perhaps option 3 could be a two-story single-family house with a small office, no basement, and the workshop located in the double garage. If possible, the garage could be built a bit longer. Alternatively, the workshop could be a separate room attached to the back of the garage.
Of course, it depends on how often the workshop is actually used and whether it really needs to have living space standards (heated).
Alternatively, as mentioned before, if possible, the workshop could be built separately as an outbuilding (shed).
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