ᐅ Planning a single-family house (basement + ground floor + upper floor) on a 480 m² plot
Created on: 19 Jan 2022 17:37
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Elias_deeE
Elias_dee19 Jan 2022 17:37Hello! In another thread, I was advised to present my project here. First of all, we are still at the very beginning of the planning process, have luckily secured a plot of land, and now need to study everything carefully. Tips, criticism, suggestions, etc., are always welcome.
Here are "our" key data:
- We are 2 adults, no children, and none planned for the time being
- Electricity consumption: about 3,000 - 3,500 kWh
- Hot water consumption: I don’t have exact data right now, but it’s rather high because we shower with warm water every day
- Fairly handy, so we would like to do at least the painting ourselves (interior + exterior), lay floor coverings (except tiles), and do the garden completely ourselves (we already have experience in all these areas)
Here are the key data for the plot:
- Plot size 480 m² (5,167 ft²)
- New development area
- 2 parking spaces required
- 2 full floors mandatory according to the development plan / zoning plan (building permit / planning permission)
- Ridge direction East-West, renewable energy preferred according to the development plan, photovoltaic as an independent roofing layer is possible
And here is what we want for the house:
- Ground floor with living room, kitchen, guest room, and bathroom with shower
- Upper floor with bedroom, walk-in closet, bathroom with shower, office 1, office 2
- Basement with technical room, utility room, possibly sauna and fitness area, but this might shift to just fitness + sauna in the garden
- Central long straight staircase as a design element
- About 80 m² (860 ft²) living space per floor
- Garage: We want an attached (prefabricated?) garage with direct access to the house plus a carport on the opposite side of the house (unfortunately required by the development/zoning plan)
According to the current plan (but I am still very uncertain here, so criticism is always welcome):
- Build according to KfW55 standard, even if there is no subsidy, or at least close to it—KfW40 does not seem worthwhile to me
- Natural gas connection is already laid to the plot, so my current preference is natural gas heating combined with solar thermal energy (for hot water and heating)
- Photovoltaics are currently not planned, as I don’t see the advantage given the low feed-in tariff
- A ventilation system, although I’m not sure yet if it should be central or decentralized
I can’t think of anything else at the moment—comments on anything are always welcome.
Thanks and best regards!
Elias_dee
Here are "our" key data:
- We are 2 adults, no children, and none planned for the time being
- Electricity consumption: about 3,000 - 3,500 kWh
- Hot water consumption: I don’t have exact data right now, but it’s rather high because we shower with warm water every day
- Fairly handy, so we would like to do at least the painting ourselves (interior + exterior), lay floor coverings (except tiles), and do the garden completely ourselves (we already have experience in all these areas)
Here are the key data for the plot:
- Plot size 480 m² (5,167 ft²)
- New development area
- 2 parking spaces required
- 2 full floors mandatory according to the development plan / zoning plan (building permit / planning permission)
- Ridge direction East-West, renewable energy preferred according to the development plan, photovoltaic as an independent roofing layer is possible
And here is what we want for the house:
- Ground floor with living room, kitchen, guest room, and bathroom with shower
- Upper floor with bedroom, walk-in closet, bathroom with shower, office 1, office 2
- Basement with technical room, utility room, possibly sauna and fitness area, but this might shift to just fitness + sauna in the garden
- Central long straight staircase as a design element
- About 80 m² (860 ft²) living space per floor
- Garage: We want an attached (prefabricated?) garage with direct access to the house plus a carport on the opposite side of the house (unfortunately required by the development/zoning plan)
According to the current plan (but I am still very uncertain here, so criticism is always welcome):
- Build according to KfW55 standard, even if there is no subsidy, or at least close to it—KfW40 does not seem worthwhile to me
- Natural gas connection is already laid to the plot, so my current preference is natural gas heating combined with solar thermal energy (for hot water and heating)
- Photovoltaics are currently not planned, as I don’t see the advantage given the low feed-in tariff
- A ventilation system, although I’m not sure yet if it should be central or decentralized
I can’t think of anything else at the moment—comments on anything are always welcome.
Thanks and best regards!
Elias_dee
Elias_dee schrieb:
Two full floors strictly required according to the development planReally mandatory to have two?Elias_dee schrieb:
Garage, the preference is a built-on (prefabricated?) garage attached to the house with direct access to the house + carport on the other side of the house (unfortunately specified by the development plan)Does the development plan specify an internal door?Elias_dee schrieb:
- central long straight staircase as a "design element"
- about 80m² (860 sq ft) of living space per floorThat’s a contradiction. Hopefully, it doesn’t also require symmetry.Elias_dee schrieb:
Build to KfW55 standard, even if there is no subsidy, or build approximately to it --> KfW40 doesn’t make sense in my opinion?I share that view, and the fact that the standard is no longer financially supported gives you a bit more flexibility to implement it less strictly or partially.https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
S
soneva201219 Jan 2022 19:15Welcome!
A few things stand out to me right away. A straight staircase in an 80m² (860 sq ft) living area on the ground floor will be difficult and will probably ruin the floor plan. Ours is over 4m (13 ft) long – it requires a lot of space, and if it is desired as a design feature, it needs even more room to have an impact.
I wouldn’t recommend building to KfW 40 standard either. It is significantly more expensive and demanding, and if you don’t want photovoltaic panels, it probably won’t work anyway.
Why are you planning a ventilation system? Just curious. I’m a bit old-fashioned and prefer to simply air out the house 2-3 times a day.
I saw your other thread and would suggest planning the sauna in the garden. It feels much nicer to just step outside into fresh air afterwards. You can never really create a true wellness area in the basement. It usually ends up as a storage space and rarely becomes a truly inviting and relaxing place. Some friends have a sauna in their basement and hardly ever use it. If you have the space, I think a small sauna in a large wellness bathroom on the upper floor is really nice. Ideally with a small balcony nearby to step outside.
A few things stand out to me right away. A straight staircase in an 80m² (860 sq ft) living area on the ground floor will be difficult and will probably ruin the floor plan. Ours is over 4m (13 ft) long – it requires a lot of space, and if it is desired as a design feature, it needs even more room to have an impact.
I wouldn’t recommend building to KfW 40 standard either. It is significantly more expensive and demanding, and if you don’t want photovoltaic panels, it probably won’t work anyway.
Why are you planning a ventilation system? Just curious. I’m a bit old-fashioned and prefer to simply air out the house 2-3 times a day.
I saw your other thread and would suggest planning the sauna in the garden. It feels much nicer to just step outside into fresh air afterwards. You can never really create a true wellness area in the basement. It usually ends up as a storage space and rarely becomes a truly inviting and relaxing place. Some friends have a sauna in their basement and hardly ever use it. If you have the space, I think a small sauna in a large wellness bathroom on the upper floor is really nice. Ideally with a small balcony nearby to step outside.
D
Deliverer19 Jan 2022 19:33I would only build passive houses from now on. If you subtract $30,000 for heating and factor in subsidies, you break even after a few years of operation. Otherwise, you pay a lot annually just to keep the house warm and then have to replace the heating system every 20 years. That will frustrate the heirs as well.
If that’s not feasible, under no circumstances should you install gas anymore. Currently, gas systems are being phased out to switch to heat pumps. This transition is even supported by subsidies. In more and more countries, gas is already banned or in the process of being phased out. Besides, right now, you can’t even sign a new gas contract...
Try to install photovoltaics almost entirely on the roof – beneath that, corrugated metal sheeting is sufficient. It won’t be visible anyway. You probably won’t be able to choose much by the time construction starts. Tip: A photovoltaic system is the only building component that generates income. Planning and installing it right from the start is the most cost-effective option. Installing it later will always be more expensive. Current feed-in tariffs allow you to recoup the system’s cost 100%. By the time you build, either higher direct marketing prices or increased feed-in tariffs will apply. There’s still some time.
It might all sound overwhelming at first, but after spending a few evenings researching these topics, it’s really not that bad. ;-)
If that’s not feasible, under no circumstances should you install gas anymore. Currently, gas systems are being phased out to switch to heat pumps. This transition is even supported by subsidies. In more and more countries, gas is already banned or in the process of being phased out. Besides, right now, you can’t even sign a new gas contract...
Try to install photovoltaics almost entirely on the roof – beneath that, corrugated metal sheeting is sufficient. It won’t be visible anyway. You probably won’t be able to choose much by the time construction starts. Tip: A photovoltaic system is the only building component that generates income. Planning and installing it right from the start is the most cost-effective option. Installing it later will always be more expensive. Current feed-in tariffs allow you to recoup the system’s cost 100%. By the time you build, either higher direct marketing prices or increased feed-in tariffs will apply. There’s still some time.
It might all sound overwhelming at first, but after spending a few evenings researching these topics, it’s really not that bad. ;-)
How is the plot? Does it have a slope?
In which region are you building? Bavaria?
Is it an expensive area?
Considering everything you’re planning, what is your budget?
How do you want to approach the project?
What are your ideas?
Architect, prefabricated house company, general contractor, etc.?
There are different opinions about the energy standard – even if it’s not your top priority, don’t just dismiss it right away. Depending on the house and construction method, the step up may not be that big.
Nowadays, I wouldn’t choose gas or solar thermal systems given the recent developments.
Why shouldn’t you do that? The main reason is comfort. You don’t want to go through the house and open everything three times a day. But there are plenty of other reasons as well.
In which region are you building? Bavaria?
Is it an expensive area?
Considering everything you’re planning, what is your budget?
How do you want to approach the project?
What are your ideas?
Architect, prefabricated house company, general contractor, etc.?
There are different opinions about the energy standard – even if it’s not your top priority, don’t just dismiss it right away. Depending on the house and construction method, the step up may not be that big.
Nowadays, I wouldn’t choose gas or solar thermal systems given the recent developments.
soneva2012 schrieb:
Why are you planning a ventilation system? Just curious. I’m old-fashioned and prefer to ventilate 2-3 times a day by opening windows.
Why shouldn’t you do that? The main reason is comfort. You don’t want to go through the house and open everything three times a day. But there are plenty of other reasons as well.
S
soneva201219 Jan 2022 20:47face26 schrieb:
Why shouldn’t you do that? The main reason is comfort. You simply don’t want to have to go through the house three times a day and open everything up. But there are plenty of other reasons as well.Actually, it’s to ensure fresh air inside the house! But I understand that many people just don’t feel like doing it.
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