Hello everyone,
We have acquired a plot of land in a new residential development. The house is planned to be around 140–160 sqm (1500–1700 sq ft) in size. It will be built as a solid structure.
Currently, this is our idea (I’m open and grateful for any feedback).
Our plan is to include a granny flat because rental income is always a plus, especially when repaying a nearly lifelong mortgage. Additionally, we qualify for more KfW funding, and my mother will likely move in with us in about 10 years.
Our plot is 515 sqm (0.13 acres), flat, and about 20.93 meters (69 ft) wide from the street side, so not very large. We want to build without a basement. The intention is to have the granny flat above the garage.
Now to the main question:
My idea is to partially basement the garage because we need and want some extra storage space. According to KfW requirements, the granny flat also needs to meet KfW 40 energy standards.
Is it possible to insulate the granny flat to achieve KfW 40?
If yes, do you have a rough cost estimate?
What do you think about this idea?
Thanks and best regards
We have acquired a plot of land in a new residential development. The house is planned to be around 140–160 sqm (1500–1700 sq ft) in size. It will be built as a solid structure.
Currently, this is our idea (I’m open and grateful for any feedback).
Our plan is to include a granny flat because rental income is always a plus, especially when repaying a nearly lifelong mortgage. Additionally, we qualify for more KfW funding, and my mother will likely move in with us in about 10 years.
Our plot is 515 sqm (0.13 acres), flat, and about 20.93 meters (69 ft) wide from the street side, so not very large. We want to build without a basement. The intention is to have the granny flat above the garage.
Now to the main question:
My idea is to partially basement the garage because we need and want some extra storage space. According to KfW requirements, the granny flat also needs to meet KfW 40 energy standards.
Is it possible to insulate the granny flat to achieve KfW 40?
If yes, do you have a rough cost estimate?
What do you think about this idea?
Thanks and best regards
PatMac88 schrieb:
We have acquired a plot of land in a new residential development. The house will be approximately 140–160 sqm (1500–1700 sq ft) in size. It will be built with solid construction. PatMac88 schrieb:
How would you approach the design of a secondary apartment? Honestly, it depends on what you can afford, whether there’s a target market for external tenants in the new development, how it would be taxed, and what the actual net result would be. Whether it fits well within your overall financing.
Renting out 50 sqm (540 sq ft) to an older tenant probably won’t work due to plans for an attic conversion. Younger single tenants usually mean higher turnover and possibly short rental gaps of a few months, but repeatedly.
It also depends on your plot: 515 sqm (0.13 acres), but we don’t know the local zoning plan. Are you even allowed to build a secondary apartment? How many parking spaces per dwelling unit are required? For two units, this could mean up to 4 parking spaces. That’s already very tight on 515 sqm. The building envelope might be too small, and you might only be allowed to build up to a certain maximum height.
You need to check the floor area ratio and plot ratio allowances. You can’t just build what you imagine in your mind. Often, it’s not that simple.
You should upload the site plan and the zoning plan so it can be reviewed whether the legal capacity is there and what kind of house fits the plot. And don’t forget: you then design a house around the secondary apartment, so everything (house and lifestyle) becomes somewhat of a compromise — and in 10 years, your mom might give you the finger because she’s moving overseas after getting married.
PatMac88 schrieb:
We plan to do a lot of the work ourselves since we have a very large family. I believe self-construction is generally not allowed if you want to receive funding from the kfW40 (energy efficiency) program? Or is that only the case for QNG (or whatever it’s called)?
N
nordanney26 Jul 2024 10:36KfW 300 is still worthwhile. 124 is not, 297 only slightly.
The plot of land itself is also important, and it is still unknown. Additionally, there are different types. For example, Type 1 may only be developed as a single-story building. May I ask if you have actually looked into your plot at all? I mean, have you read all the fine print, sketched the plan, calculated the floor-area ratio, and so on? It doesn’t make sense for us to work on this if you haven’t.
ypg schrieb:
Thanks, but links get deleted here.
The plot itself is also important, which is still unknown. Additionally, there are different types. For example, Type 1 is only allowed to be built as a single-story.
May I ask if you have actually looked into your plot yet?
I mean, have you read all the fine print, drawn up the plan, calculated the floor area ratio, etc.? It doesn’t help if we deal with this and you don’t. So, only gable roofs are allowed. You may build a condominium unit (a WE). We have to stay 3m (10 feet) away from the property boundary. The garage can start at 6m (20 feet), but it can also be built right on the boundary. You are allowed to build up to three floors.
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