ᐅ Cost Planning
Created on: 29 Apr 2016 21:27
B
Becker84
Hello,
I will most likely buy a plot of land next week and am therefore just at the very beginning.
A financing inquiry is in progress, and an appointment with a structural engineer is already scheduled.
The plot is 630m² (6,780 sq ft) in size, with a site coverage ratio of 0.3.
I have the option to build to KfW 70, 55, or 40 standards (preferably 40+). KfW 70 is the minimum standard nowadays, so no funding is available for that level.
Ideally, I would like to be completely independent of electricity and gas, so a 40+ standard with photovoltaic panels plus battery storage and a heat pump.
-----------------
One thought I had: Is it possible to do without a heat pump and instead invest more in photovoltaic panels, so that heating is done purely electrically?
I noted down the data from the photovoltaic system at my workplace:
Maximum inverter output: 14.6kW (May).
Energy yield during the summer months is 1700–1900 kWh/month.
In the heating-intensive winter months, 160–300 kWh/month.
Now I wonder if a 55 or 40 standard house can get by with 80–150 kWh per month for heating energy?
Electrical energy from photovoltaics can be converted to heat almost without losses, and thanks to phase shifting in a passive house, it can be used without storage. The waste heat from the TV or refrigerator also contributes.
At my first meeting with a structural engineer, I mentioned this idea, and the answer was, “No one has thought of that yet... it would need to be calculated.” Apparently, there are other factors that negatively affect the calculations for fully electric heating.
-----------------
Next question: roughly how much does each house type cost at KfW 70/55/40?
1. Bungalow (Is it even possible to use the roof at KfW 40 standard?)
2. Two-story house with a gable roof – the ideal standard ;-)
3. Two-story house with a hipped roof – my favorite
Floor area about 120–130m² (1,290–1,400 sq ft).
At the first visit, I was told that with reasonable finishes (bathroom, tiles, etc.), the bungalow would be roughly €180,000. Number 3 would be around €350,000 at KfW 70.
I don’t want to do any work myself. Everything should be done perfectly.
Is this realistic?
Ideally, next to the house there should be a large double garage (€25,000?).
Is there a website where completed homeowners present their houses including all costs? That would really help me a lot.
Best regards,
Becker84
I will most likely buy a plot of land next week and am therefore just at the very beginning.
A financing inquiry is in progress, and an appointment with a structural engineer is already scheduled.
The plot is 630m² (6,780 sq ft) in size, with a site coverage ratio of 0.3.
I have the option to build to KfW 70, 55, or 40 standards (preferably 40+). KfW 70 is the minimum standard nowadays, so no funding is available for that level.
Ideally, I would like to be completely independent of electricity and gas, so a 40+ standard with photovoltaic panels plus battery storage and a heat pump.
-----------------
One thought I had: Is it possible to do without a heat pump and instead invest more in photovoltaic panels, so that heating is done purely electrically?
I noted down the data from the photovoltaic system at my workplace:
Maximum inverter output: 14.6kW (May).
Energy yield during the summer months is 1700–1900 kWh/month.
In the heating-intensive winter months, 160–300 kWh/month.
Now I wonder if a 55 or 40 standard house can get by with 80–150 kWh per month for heating energy?
Electrical energy from photovoltaics can be converted to heat almost without losses, and thanks to phase shifting in a passive house, it can be used without storage. The waste heat from the TV or refrigerator also contributes.
At my first meeting with a structural engineer, I mentioned this idea, and the answer was, “No one has thought of that yet... it would need to be calculated.” Apparently, there are other factors that negatively affect the calculations for fully electric heating.
-----------------
Next question: roughly how much does each house type cost at KfW 70/55/40?
1. Bungalow (Is it even possible to use the roof at KfW 40 standard?)
2. Two-story house with a gable roof – the ideal standard ;-)
3. Two-story house with a hipped roof – my favorite
Floor area about 120–130m² (1,290–1,400 sq ft).
At the first visit, I was told that with reasonable finishes (bathroom, tiles, etc.), the bungalow would be roughly €180,000. Number 3 would be around €350,000 at KfW 70.
I don’t want to do any work myself. Everything should be done perfectly.
Is this realistic?
Ideally, next to the house there should be a large double garage (€25,000?).
Is there a website where completed homeowners present their houses including all costs? That would really help me a lot.
Best regards,
Becker84
We paid €10,000 for the heating system including services, and €9,290 for two 70m (230 ft) drillings. We hope to get €4,500 back from the BAFA subsidy. This would make the total cost around €15,000.
A gas boiler would probably cost around €4,000, with connection fees about €3,000 (due to a long distance). I’m not sure about the heat pump price, but I think it might be another €4,000 (?). So, in our case, it would have been about €4,000 cheaper—maybe only €3,000.
A gas boiler would probably cost around €4,000, with connection fees about €3,000 (due to a long distance). I’m not sure about the heat pump price, but I think it might be another €4,000 (?). So, in our case, it would have been about €4,000 cheaper—maybe only €3,000.
BaFa has nothing to do with KfW. If you apply for funding before commissioning, for example, you can receive €4500 (around $4900) for a brine-water heat pump with deep drilling, provided the annual performance factor exceeds 4.5, you take out insurance for the drilling, and meet a few other minor requirements.