timmaed
2016-12-15 23:46:31
- #1
Hello,
We are still planning our house (in case anyone remembers: we had to increase our budget by €100k to realistically get something done...). Currently, we are considering integrating a small granny flat. We could use the granny flat well as a guest apartment for our parents because they live very far away. The parents would then happily stay with us for a week sometimes, and having a separate living area would be very convenient. I am aware that the funding is only paid proportionally according to the living areas. However, if the following calculation is completely wrong, then I don’t need to consider the granny flat any further.
Therefore, the following question:
Which (expensive) systems need to be duplicated for a two-family house with Kfw40 or 40+?
1. Does each residential unit have to have its own ventilation system? I have heard that this is required for fire protection reasons. What kind of controlled residential ventilation would that be? Is a decentralized little fan with a heat exchanger enough for the granny flat?
2. Does each residential unit have to have its own photovoltaic system with a separate battery?
If the systems do not need to be duplicated, then I arrive at the following calculation:
Best regards,
Tim
We are still planning our house (in case anyone remembers: we had to increase our budget by €100k to realistically get something done...). Currently, we are considering integrating a small granny flat. We could use the granny flat well as a guest apartment for our parents because they live very far away. The parents would then happily stay with us for a week sometimes, and having a separate living area would be very convenient. I am aware that the funding is only paid proportionally according to the living areas. However, if the following calculation is completely wrong, then I don’t need to consider the granny flat any further.
Therefore, the following question:
Which (expensive) systems need to be duplicated for a two-family house with Kfw40 or 40+?
1. Does each residential unit have to have its own ventilation system? I have heard that this is required for fire protection reasons. What kind of controlled residential ventilation would that be? Is a decentralized little fan with a heat exchanger enough for the granny flat?
2. Does each residential unit have to have its own photovoltaic system with a separate battery?
If the systems do not need to be duplicated, then I arrive at the following calculation:
Best regards,
Tim