Hello,
I am still a beginner when it comes to building a house.
Therefore, I would like to clarify some factors in advance:
My partner and I are deciding between building or buying.
A new house would have an energy efficiency of 49 kWh/m² (14,8 kWh/ft²).
An older building would have about 250 kWh/m² (76,5 kWh/ft²).
I need a practical formula that allows me to compare oil, gas, and heat pumps.
How much electricity does a heat pump consume per year, how many liters of heating oil, and how many cubic centimeters of gas.
Only once I can calculate the energy costs for different houses can I determine the payback period and calculate a monthly repayment.
Right now, I tend to go for new construction! (The only thing that really bothers me is the high land prices: 105 €/m² (9.75 $/ft² approx.)).
Regards
I am still a beginner when it comes to building a house.
Therefore, I would like to clarify some factors in advance:
My partner and I are deciding between building or buying.
A new house would have an energy efficiency of 49 kWh/m² (14,8 kWh/ft²).
An older building would have about 250 kWh/m² (76,5 kWh/ft²).
I need a practical formula that allows me to compare oil, gas, and heat pumps.
How much electricity does a heat pump consume per year, how many liters of heating oil, and how many cubic centimeters of gas.
Only once I can calculate the energy costs for different houses can I determine the payback period and calculate a monthly repayment.
Right now, I tend to go for new construction! (The only thing that really bothers me is the high land prices: 105 €/m² (9.75 $/ft² approx.)).
Regards
J
JDoerbecker15 Jun 2014 09:53Hello,
If €105 per square meter (approximately $110 per square yard) already seems high to you, you should come visit us in BY/the commuter belt of Munich…..
That is actually a good price for a serviced plot of land. We ourselves consider €120 (approximately $126) per square meter a bargain.
Best regards
Joe
If €105 per square meter (approximately $110 per square yard) already seems high to you, you should come visit us in BY/the commuter belt of Munich…..
That is actually a good price for a serviced plot of land. We ourselves consider €120 (approximately $126) per square meter a bargain.
Best regards
Joe
Hello Doerbecker,
The plot is only partially developed (partially serviced)!
And I am not building in Munich but in a small village in the Westerwald region. Unfortunately, there are significant fluctuations depending on the location, ranging from 40 € to 120 € per square meter (approximately $44 to $132 per square yard).
However, the 40 € price applies to areas that are quite remote, where property prices for existing buildings are also very low.
But does anyone have an answer to my main question on how to convert energy costs per square meter?
The plot is only partially developed (partially serviced)!
And I am not building in Munich but in a small village in the Westerwald region. Unfortunately, there are significant fluctuations depending on the location, ranging from 40 € to 120 € per square meter (approximately $44 to $132 per square yard).
However, the 40 € price applies to areas that are quite remote, where property prices for existing buildings are also very low.
But does anyone have an answer to my main question on how to convert energy costs per square meter?
E
ErikErdgas17 Jun 2014 15:02Hello Gintonik,
As you mentioned, you are still new to house building, so hardly anyone in the forum can provide answers to your question. Let’s start with the choice: Build or Buy.
Building (New Construction)
Advantages: Possibility for customization, energy standard and energy system selectable depending on budget
Disadvantages: Possibly long planning and construction time, cost risks
Buying (New Construction)
Advantages: High cost certainty, faster move-in possible
Disadvantages: Often standard designs, limited options for energy standard and systems, limited ability to influence layout
Basically, I would exclude oil from the three energy sources you mentioned, even though some still see potential in it.
For gas and heat pumps, energy standard and investment costs are important factors. A gas condensing boiler system, if a gas connection is available, is relatively straightforward and achievable within a manageable budget. For a heat pump, we are talking about a factor of 2 to 3.
The goal should be a sensible building physics standard below the requirement level of the 2013 energy saving regulation, as your property should be seen as an investment and will have to compete with plus-energy houses in a few years. Therefore, solar support and possibly your own power generation through a mini or micro combined heat and power plant also make sense. This brings us to the question of user behavior and equipment: How many occupants, swimming pool planned, electric car or electric scooter conceivable, etc.
Best regards, Erik
As you mentioned, you are still new to house building, so hardly anyone in the forum can provide answers to your question. Let’s start with the choice: Build or Buy.
Building (New Construction)
Advantages: Possibility for customization, energy standard and energy system selectable depending on budget
Disadvantages: Possibly long planning and construction time, cost risks
Buying (New Construction)
Advantages: High cost certainty, faster move-in possible
Disadvantages: Often standard designs, limited options for energy standard and systems, limited ability to influence layout
Basically, I would exclude oil from the three energy sources you mentioned, even though some still see potential in it.
For gas and heat pumps, energy standard and investment costs are important factors. A gas condensing boiler system, if a gas connection is available, is relatively straightforward and achievable within a manageable budget. For a heat pump, we are talking about a factor of 2 to 3.
The goal should be a sensible building physics standard below the requirement level of the 2013 energy saving regulation, as your property should be seen as an investment and will have to compete with plus-energy houses in a few years. Therefore, solar support and possibly your own power generation through a mini or micro combined heat and power plant also make sense. This brings us to the question of user behavior and equipment: How many occupants, swimming pool planned, electric car or electric scooter conceivable, etc.
Best regards, Erik
Gintonik schrieb:
....
A new house would have an energy efficiency of 49 kWh/m² (13,600 Btu/ft²).
An older building would have approximately 250 kWh/m² (70,000 Btu/ft²)....Gintonik schrieb:
...
How much electricity does the heat pump require per year, how many liters of heating oil and how many cm³ of gas... No one can provide a reliable answer to this question. Additionally, the production of domestic hot water also plays a role. The efficiency is significantly influenced by the achievable system performance factor. Ground-source heat pumps reach around 0.23, air-source heat pumps about 0.29, and condensing gas boilers approximately 1.2, assuming careful system design and dimensioning. Generally: the lower the energy demand, the higher the investment costs!
Gintonik schrieb:
...Only when I can compare the energy costs of different houses can I calculate the payback period and determine a monthly repayment amount. Hardly, because the actual demand (capacity, energy) for heating and hot water would have to be known in each case.Moreover, there is never a payback period for owner-occupied buildings (business economics)!
With new construction, you have all options to coordinate all influencing factors and components depending on the budget.
In existing buildings, there are many risks, the selling price is often too high, and ultimately compromises of varying degrees must be expected (except if a major renovation is possible).
@ Erik: Saying it is 2 to 3 times higher is probably a joke. An air-source heat pump or ground-source heat pump with a trench collector requires a lower investment than a condensing gas boiler, especially when connection costs and usually required solar thermal systems are taken into account.
Best regards
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