Renovation of a 1950s old building - house number - sought renovation costs

It was similar for me

20K windows (specialist company) 13.5K electrical (specialist company) connections, piping, radiators 10K (specialist company) bathrooms and kitchen tiled, bathroom fixtures (7k) kitchen 9k entire interior plastered 6.5k remaining rooms all parquet 4.5k (foil, leveling compound, floor, skirting) top floor ceiling insulated (1200€) new frames and doors 5.8k basement newly plastered, ceilings suspended 1.5k (renovation plaster) doors widened, walls knocked out, slots filled 0.5k balcony covered with natural stone carpet 2.5k probably also blew another 1.5k at the recycling center, felt like hundreds of trailer loads trailer 0.5k (best investment) roof slopes on upper floor insulated 1.5k

planning to move in within three weeks.

Without kitchen and furnishings, roughly estimated costs for the mentioned measures are T€ 40-50. Unless you want total luxury in the bathroom or mega-tiles. How do I arrive at this price? Experience and current offers for the complete core renovation of a two-family house (120 sqm down to the foundation walls and 80 sqm new heating+radiators and windows; incl. complete insulation KfW55). But you have to invest a little time in planning and selecting companies. Anything more expensive is a goldmine for the contractors.

I say for all the work you mentioned including kitchen and overall electrics you will come out at around ~100k. And that includes nice bathrooms, enough sockets, and new water/sewage. I would do the demolition work completely myself.

Is possible with own work for demolition and possibly electrical, in my opinion, for around ~50k. Provided you stay within the normal range for bathroom fixtures, kitchen, and flooring, of course there is a lot of room for upward variation.

Now you definitely have a range of assumptions

I don't think you'll end up around 150-200k. Quite a bit has already been done there.

I mean, Specki already includes two items in his "Material costs" that don't apply to you (or only very minimally). The heating for 11k and windows and doors for 21k - you simply don't have those.

In the end, it also depends on how you define "simple work" and what standard you aim for. But I think you really have to push yourself to spend more than 100k.