Cost planning

At my first visit to a civil engineer, I mentioned the idea and the response was "no one has come up with that idea yet..

Hi,

no one has come up with that idea yet? I think they have, after a little calculation you will realize that at best you can just convince yourself with it.

There are months in winter when the solar yield is zero on many days. Bad weather. Snow on the collectors, ....

What do you do then? Feed the kWh of electricity from the grid at 0.28 euros into a heating element! Or freeze + take cold showers.

A reasonably sized photovoltaic system for maximized self-consumption with a battery (40+), so about 5-7 kWp: very usable. Add a small heat pump, ideally an air-to-water heat pump or ground source heat pump + a proper hot water storage tank, then the thing comes together and works better.

In our latitudes, a PH is not quite passive but only passive on an annual average. That’s why the employees in the mentioned model house upstairs are freezing too. I’m not surprised at all.

If you rely on waste heat from the refrigerator and such: I give away my old one during the year, it heats excellently. ;)

Regards
Thorsten

The 1600 € / m² include everything (tiles, sanitary, heating, painter, etc.)?

To my knowledge, Kfw70 turnkey, without painting and flooring work. Additional construction ancillary costs amounting to €30-40k will also apply. Of course, it all depends on what you want included. You can quickly sink up to €2000/m² there. I just wanted to prepare you that you don’t need to start planning with the €1150-1250 as stated in your example.

Take a look around the forum. is from the industry and has listed prices for many construction projects. Maybe you’ll find a similar construction project in your area. She is currently quite busy privately, so she can no longer provide prices for all construction projects.

Additional costs of €40,000 => does that include paving work and garden?

Has anyone ever calculated if and when the additional costs for the KfW55 or 40 house pay off? I’d say with ~80% financing and ~20 years of loan.

Hello,

so many users have compiled so much about house construction and additional services here; you should actually be able to use the search function ....



Rhineland greetings

Interestingly, the additional KFW is often calculated in such a way that it takes about 30 years to break even (with GÜs)... and like with everything: the last 10% is the most expensive. Ancillary costs with us including outdoor facilities are around 40,000 €.