Is cost calculation for a prefabricated house feasible? Are there additional costs?

Come on, let's keep things in perspective. We are building good 200 m² of living space with very good equipment. and we will definitely stay under 500k with all ancillary costs "all-in." The calculation is currently at 485k and we are almost finished. Included in this is the plot of land with 80k. That puts us at 2,000 € per sqm, but including outdoor facilities, garage, kitchen, stove... However, only the Energy Saving Ordinance, no KfW-x.

Everyone has their own definition of "very good equipment." For you, it’s probably more wishful thinking. We build a) certainly not expensively and b) far from luxury or VERY good equipment. Still, we pay about 470k JUST for the house (also only Energy Saving Ordinance) without land, without ancillary building costs, without kitchen, without controlled residential ventilation, without garage, without KNX, without outdoor facilities, without 50k architect costs! For 470k we get 224 sqm + 60 sqm insulated roof with good equipment. If I count 50% of the roof... I come to 1850 EUR per sqm and I consider that "good" equipment realistic. Many of our neighbors install things we forgo for cost reasons... e.g. venetian blinds, gigantic window fronts, special architecture (that really! costs a lot), floorboards, wooden windows and so on... then we’re talking about 2200..2500 EUR per sqm. But it’s still not luxury... I know others.

Regards, Steffen

PS: Maybe I’m wrong and you got all those nice things for ridiculously little money. Then I congratulate you on that "lottery win."

Hello Steffen,

I understand that this is a very subjective topic. For me, of course, there is also at least "very, very good" and "luxurious."

It was important to me that high-quality materials were used. So, for basically all building materials, we opted for the most expensive variant (of the respective prescribed manufacturer), e.g., electric roller shutters made of aluminum instead of plastic, the Avantgarde glaze on the roof tiles, impregnated Dutch bricks instead of simple clinker bricks, wooden floorboards instead of carpet on the upper floor, 105 m² of granite flooring on the ground floor and on the stairs (various formats up to 1.50 m x 1.50 m) instead of tiles, top-of-the-line bathroom fixtures (which ultimately increased the construction price by 25k), interior style doors, paving made of black granite, natural stone walls in the garden, and numerous other things. Our electrical planning also became very extensive with fingerprints, PIN fields, etc. Camina S17 stove.

What we don’t have: wood-aluminum windows (damn, requested too late), controlled residential ventilation, home automation. Our architecture is relatively simple, but I had it built "earthquake-proof," so we have a lot of reinforced concrete in the walls. Window size was irrelevant cost-wise for us because window area is probably cheaper than our wall construction. Oh yes, and the heating is separate and not included in the mentioned price.

, I'm already looking forward to your posts in the picture thread! Respect!