Only professional companies. Own work = tearing off wallpaper and disposing of waste or knocking down a small wall (non-load-bearing). But very limited, as we have 2 small kids.
Roof: 50k
Photovoltaics: 20k
Windows + front door: 30k
Shell construction: 30k
Electricity: 25k
Drywall: 10k
Insulating basement ceiling: 5k
New water installation: 25k
Radiators: 17k
Heat pump: 30k
Bathrooms: 30k
Fireplace: 4k
Plasterer/painter/sanding and repairing floors/baseboards/exterior painting all one company: 50k
Architect: 35k
Kitchen: 20k
=~ 380k pretty much 2000€/sqm, a bit of small stuff will be added (container fees, portable toilet etc.)
Minus subsidies:
12,000€ roof + basement ceiling (individual building envelope measures, application '22)
30,000€ for heating + water installation, possibly more if we also get something for the bathrooms (application '23, 2 residential units – we missed it in '22...)
6,000€ for windows via tax declaration
2,000€ for photovoltaics (city subsidy)
4,000€ building envelope + windows + roof (city subsidy, based on sqm roof area, window area etc.)
=~326k = 1715€/sqm
But it must be said that we have a relatively small footprint (2 full stories + steep roof with 2nd attic floor with high room height) and thus, for example, our roof is relatively small – with a larger footprint, it can also be significantly more expensive...