ᐅ Initial Discussions with Prefabricated House Manufacturers – Any Tips?

The house is from Bien-Zenker—make sure to ask about the different heating systems along with their prices. I have a standard gas boiler, costing about 400€ (approximately $440) per year in energy costs for two people. Depending on which heat pumps are suggested, it can get quite expensive. I saved around 22,000€ (about $24,200) and decided against it. Heat pumps can also turn out to be electricity guzzlers (which I experienced in my previous house). The gas boiler was so cheap that I didn’t need to rely on subsidy programs. Their lifespan is limited, too—after 10 to 15 years, costs can rise. The gas boiler, on the other hand, would cost 2,300€ (about $2,530) to replace. Many neighbors complain about the electricity consumption of their heat pumps in winter if they don’t want to feel cold. A tip: install a fireplace; it cost 4,700€ (around $5,170) extra at Bien-Zenker back then. A neighbor of mine, living in a KfW55-rated home, also only has a gas boiler and heats more often than I do with my fireplace. His gas bill is €27 (about $30) per month (3 people, 148 sqm [1600 sq ft]). He even collects leftover wood from construction sites.

So, calculate and compare heating systems carefully. Usually, the salespeople receive high commissions here. Bien-Zenker provided me with a very transparent building and service description, which included things like the site container, temporary toilet, and so on.

I compared eight detailed offers. When buying a car, people compare and negotiate—so why not with a house? In terms of quality, the big companies are all good.

Good luck with building your house—there’s nothing like having your own four walls.

Very good, @Baumfachmann, thank you. That is helpful.

Especially regarding the heat pump, I had not been aware of that from an economic perspective (setting aside the ecological benefits).

Somehow, I always thought that according to the current energy-saving regulations, such an energy-efficient heating system is required.

Well, these systems are subsidized, but they are not perpetual motion machines that run on their own. There is a large industry behind them. The most effective solution is good insulation. Heat pumps are suitable for properties by a lake where oil tanks are not allowed or in areas without gas supply. Regards from Bavaria

What I don’t like about these units is that the boxes are placed directly next to the house. At a friend’s place, the unit is positioned so that in winter, when the wind comes from the main wind direction, you constantly walk through a kind of “smoke cloud” at very cold temperatures (which do happen occasionally). From a distance, looking up the driveway, it looks really odd when the front of the house is always shrouded in mist.

Of course, no one could have known that beforehand. And at least in foggy conditions, you can’t see the large box on the side of the house visible from the driveway.

Have clear ideas about what you want and don’t hesitate—your counterpart is not trying to do you a favor, they just want to make money. Always remember, this is not a consultation; it is a sales pitch.

It’s best if you read this first,
https://www.hausbau-forum.de/threads/grundrissplanung-unbedingt-vor-Beitrag-Erstellung-lesen.11714/

Fill out the questions for yourself; a good advisor will ask you most of these as well.

An air-source heat pump is really not energy efficient, especially in areas where it gets very cold.

Besides that, a fireplace in a house built to the latest standards is also not very practical. It gets too hot. Except as a prepper or during power outages in winter, it’s really not useful.