Is it possible to save costs smartly when building a house?

Friends were recently at our place and admired our bathroom floor tiles. They were offered a similar one with a 50% surcharge. They hadn't discovered ours. So the price dropped from 33 euros to 22 euros per square meter. It was even at the same dealer. One more tip, buy proactively. If I know today that I will need something in x weeks, I already keep an eye out. Every time I’m at the hardware store, I look at the bargain corners. My girlfriend is always happy [emoji3]

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For the fact that "brauchen" was used here with "zu," I give a respect point! I personally find it regrettable that I have to read some posts here and elsewhere at least twice before I understand them, and therefore I advocate writing according to the generally accepted rules. It's like building...

You can have the garden leveled by the civil engineer, who compacts more with his machines, but he is and remains a civil engineer. In the garden area, this usually falls into the class of gross motor skills.

In my opinion, the biggest savings are made on the square meters, then on heating and electricity. Fundamental cost-relevant decisions can be made there before it comes to the "square meter of tile."

A simple house without a bay window or projection also saves some money compared to a house of the same size with a bay window and the like. Likewise, perhaps with the exterior window color, but that depends on the general contractor/architect. Sure, anyone who wants can gladly choose RAL7016 there, but white is not so bad either and costs us about 1,500 euros for the whole house. With the same functionality, that makes you think...

A simple house without bay windows or recesses also saves a bit compared to an equally sized house with bays and the like.

However, the most cost-effective are those protrusions of the outer edge that extend into the roof structure.

Similarly, perhaps with the exterior window color, [...] Sure, anyone who wants can gladly take RAL7016 there, but white is not so bad either and costs us about 1,500 euros for the entire house.

Aluminum is coated anyway; white is hardly cheaper than other standard / non-metallic tones. Where it makes a difference is plastic: there, white is basically "raw," and colored is coated / foiled.

What is sensible for windows (or building elements in general) is: first, to coordinate the dimensions and not to take twelve different formats for seventeen windows; and second, to orient oneself to common "stock sizes."

Those who remodel model houses / "building proposals" would also do well not to change the format of windows they relocate. Then the structural engineer does not have to recalculate the lintel.

For the popular corner windows, there is also a saving option: namely, rather place a pillar on the corner and clad it in the frame color – then the lintel does not have to "hang" over the corner.

A similar issue are the beveled entrances of living-dining rooms (to enter them not quite through the kitchen, but also not quite into the living room). Often there would be a corner of load-bearing walls there, changing which requires a beam.

By the way, these are typical amateur planner mistakes where the architect “really pays off.”

My brother-in-law had the kitchen appliances quoted again at a well-known electronics retailer and ended up paying considerably less than if he had bought them from the kitchen studio.

That is of course also a good way to save. But how does it work with the installation then? The kitchen studios I know do not install third-party appliances...