ᐅ Planning a New Single-Family Home Construction with Energy Consulting
Created on: 8 Jan 2017 15:43
Z
ZeroDownHello everyone,
first of all, Happy New Year to you all 🙂
We are currently in the planning phase of our single-family home for two adults and a very small baby 🙂
I am currently looking at a plot of land (around 1500 m² (0.37 acres)) and once that is settled, I will take my floor plan idea to a trusted architect to discuss it and then have a plan drawn up. (Postal Code: 95515)
Of course, I still have many gaps in my knowledge and wanted to ask for your advice on the best way to proceed.
Here are the key points:
A single-family house built with solid construction and a very, very high amount of own work effort / sweat equity (father-in-law is a passionate excavator and crane operator, brother-in-law and brother are masons; my dad is a painter and all-round craftsman), even if it takes 2 years 🙂
A basement (usable area approx. 90 m² (970 sq ft); unheated/living space excluded); ground floor plus one upper floor with about 180 m² (1,940 sq ft) of living space; a double garage approx. 40 m² (430 sq ft) (neither basement underneath nor built over)
A staggered mono-pitched roof (solid roof construction - entirely by the carpenter) with a large photovoltaic system (based on the current floor plan, about 16 kWp is possible with south orientation). Planning for this is already quite advanced 🙂 Roof covering therefore with trapezoidal metal sheets.
Triple-glazed windows
Controlled mechanical ventilation system
Heat pump with ground collector / trench collector
Possibly KNX home automation
Possibly expandable with a small wood stove in the living room, i.e. pre-install/build a chimney
Possibly air conditioning (split unit)
What I have in mind as underlying goals:
A house as cost-effective as possible (price/performance ratio must be right), hence a lot of own work effort
At least state-of-the-art technology
Where I hope to get your support:
1. At what stage do you involve which type of energy consultant?
1a. What kind of house am I building? KfW 70 / KfW 55 / KfW 40 / KfW 40+ (photovoltaic storage is not really economical); tendency leans towards KfW 40, as it seems likely achievable, right?
2. How do I build it? 24 cm (9.5 inches) sand-lime brick + insulation / 36 cm (14 inches) aerated concrete / or something completely different?
3. How do I heat it? Ground source heat pump with trench or surface collector?
What other important information have I forgotten?
What are your opinions on our plan?
Many thanks in advance and best regards
Marco
first of all, Happy New Year to you all 🙂
We are currently in the planning phase of our single-family home for two adults and a very small baby 🙂
I am currently looking at a plot of land (around 1500 m² (0.37 acres)) and once that is settled, I will take my floor plan idea to a trusted architect to discuss it and then have a plan drawn up. (Postal Code: 95515)
Of course, I still have many gaps in my knowledge and wanted to ask for your advice on the best way to proceed.
Here are the key points:
A single-family house built with solid construction and a very, very high amount of own work effort / sweat equity (father-in-law is a passionate excavator and crane operator, brother-in-law and brother are masons; my dad is a painter and all-round craftsman), even if it takes 2 years 🙂
A basement (usable area approx. 90 m² (970 sq ft); unheated/living space excluded); ground floor plus one upper floor with about 180 m² (1,940 sq ft) of living space; a double garage approx. 40 m² (430 sq ft) (neither basement underneath nor built over)
A staggered mono-pitched roof (solid roof construction - entirely by the carpenter) with a large photovoltaic system (based on the current floor plan, about 16 kWp is possible with south orientation). Planning for this is already quite advanced 🙂 Roof covering therefore with trapezoidal metal sheets.
Triple-glazed windows
Controlled mechanical ventilation system
Heat pump with ground collector / trench collector
Possibly KNX home automation
Possibly expandable with a small wood stove in the living room, i.e. pre-install/build a chimney
Possibly air conditioning (split unit)
What I have in mind as underlying goals:
A house as cost-effective as possible (price/performance ratio must be right), hence a lot of own work effort
At least state-of-the-art technology
Where I hope to get your support:
1. At what stage do you involve which type of energy consultant?
1a. What kind of house am I building? KfW 70 / KfW 55 / KfW 40 / KfW 40+ (photovoltaic storage is not really economical); tendency leans towards KfW 40, as it seems likely achievable, right?
2. How do I build it? 24 cm (9.5 inches) sand-lime brick + insulation / 36 cm (14 inches) aerated concrete / or something completely different?
3. How do I heat it? Ground source heat pump with trench or surface collector?
What other important information have I forgotten?
What are your opinions on our plan?
Many thanks in advance and best regards
Marco
Welcome to the forum! I can’t comment on every topic, but here are a few brief notes and suggestions.
1a) Whether or not you want to use the KfW loan plays a role here. In terms of heating costs alone, the difference between KfW70 and KfW40 standards isn’t as large as people often suggest. Even with 30 euros per month, you can heat for a very long time with the savings. If you can do without the loan, I would only build to the minimum standard, which doesn’t automatically mean your house is “worse.” That’s just my opinion, and you’ll find others who think differently here.
2) In Bavaria and also here in Baden-Württemberg, many builders still rely on the traditional brick. I will be building with bricks myself, as I believe they have many strengths and few weaknesses. If there’s a brick factory near you, check if they offer tours. I visited one production site, and it was very interesting—you learn a lot.
3) A trench collector is a good option for your plot and poses no problem. However, you should do a lot of the work yourself; otherwise, you don’t really save money.
Personally, I wouldn’t recommend using a Swedish stove, as it heats the air quickly but also causes the room to overheat fast. Then you ventilate, the room gets too cold again, and the cycle repeats. That’s why I recommend a (small) masonry heater. If you’re interested, just read up on it.
I will probably do the KNX system myself, as it’s not as much more expensive as people say. Planning is key, and with smart planning, you can achieve future-proofing and flexibility for only a small additional cost compared to conventional wiring.
Here are two interesting threads:
https://www.hausbau-forum.de/threads/beispiel-automatisierung-anhand-grundriss.16941
https://www.hausbau-forum.de/threads/planung-und-kosten-hausautomation.9350/
For more detailed information, though, this isn’t the right forum.
1a) Whether or not you want to use the KfW loan plays a role here. In terms of heating costs alone, the difference between KfW70 and KfW40 standards isn’t as large as people often suggest. Even with 30 euros per month, you can heat for a very long time with the savings. If you can do without the loan, I would only build to the minimum standard, which doesn’t automatically mean your house is “worse.” That’s just my opinion, and you’ll find others who think differently here.
2) In Bavaria and also here in Baden-Württemberg, many builders still rely on the traditional brick. I will be building with bricks myself, as I believe they have many strengths and few weaknesses. If there’s a brick factory near you, check if they offer tours. I visited one production site, and it was very interesting—you learn a lot.
3) A trench collector is a good option for your plot and poses no problem. However, you should do a lot of the work yourself; otherwise, you don’t really save money.
Personally, I wouldn’t recommend using a Swedish stove, as it heats the air quickly but also causes the room to overheat fast. Then you ventilate, the room gets too cold again, and the cycle repeats. That’s why I recommend a (small) masonry heater. If you’re interested, just read up on it.
I will probably do the KNX system myself, as it’s not as much more expensive as people say. Planning is key, and with smart planning, you can achieve future-proofing and flexibility for only a small additional cost compared to conventional wiring.
Here are two interesting threads:
https://www.hausbau-forum.de/threads/beispiel-automatisierung-anhand-grundriss.16941
https://www.hausbau-forum.de/threads/planung-und-kosten-hausautomation.9350/
For more detailed information, though, this isn’t the right forum.
Hello Jäger,
thank you very much for your help.
I need to take a closer look at the funding options and also discuss them with my bank.
Yes, I’ve already gathered many opinions about the brick, it’s really popular. But I find it not quite as easy to work with as Ytong. In my opinion, that is the biggest drawback I have... which block is the right one for my house?
No, I’m not aware of any factory nearby, but that would be interesting.
I have already found the tool for the trench collector, and since my father-in-law is a passionate excavator operator, that’s actually perfect. So basically, I only have to pay for materials and diesel here.
It doesn’t have to be a wood stove or Swedish stove. Aren’t there affordable pellet stoves that are room-air independent? I’ve never heard of a Grundofen; I will have to look into that.
If I go with KNX, it will be self-installed (I have programmed PLCs before ;-) ). But when I read through those two threads, both sides (pros and cons) seem to be right. I think you either want it or you don’t.
Many thanks,
Marco
thank you very much for your help.
I need to take a closer look at the funding options and also discuss them with my bank.
Yes, I’ve already gathered many opinions about the brick, it’s really popular. But I find it not quite as easy to work with as Ytong. In my opinion, that is the biggest drawback I have... which block is the right one for my house?
No, I’m not aware of any factory nearby, but that would be interesting.
I have already found the tool for the trench collector, and since my father-in-law is a passionate excavator operator, that’s actually perfect. So basically, I only have to pay for materials and diesel here.
It doesn’t have to be a wood stove or Swedish stove. Aren’t there affordable pellet stoves that are room-air independent? I’ve never heard of a Grundofen; I will have to look into that.
If I go with KNX, it will be self-installed (I have programmed PLCs before ;-) ). But when I read through those two threads, both sides (pros and cons) seem to be right. I think you either want it or you don’t.
Many thanks,
Marco
ZeroDown schrieb:
So if it's KNX, then do it yourself (I used to program PLCs before ;-) ) But reading through both threads, both sides (pros and cons) are right. I think you have to want it or not.That’s how it is with many things in your own house ;-)
But I can confirm this: KNX only if you do it yourself. Otherwise, the extra costs are definitely not worth it compared to the rather limited added value.
One of the most important topics in new construction and renovation is the controlled ventilation with heat recovery required by airtight building methods. This ensures that not only residual construction moisture but also emissions present in every new product are effectively removed.
Furthermore, the installation of a ventilation system is rewarded with 17.5 kWh/m²/year (5.4 kWh/ft²/year) in the KfW funding program and can help advance to the next funding level.
Furthermore, the installation of a ventilation system is rewarded with 17.5 kWh/m²/year (5.4 kWh/ft²/year) in the KfW funding program and can help advance to the next funding level.