I also find that exaggerated... anyone building with Town & Country has different ideas and probably won’t upgrade for 100,000 euros...
- for example, I wouldn’t do without underfloor heating
- nor the circulation line, otherwise you stand in the kitchen forever waiting for the water to come
- nothing is said about SAT for electricity / a few more sockets will probably be added
- a 90x90 shower would be too small for me
- a 170x75 tub would be too small for me
Of course, if someone wants all windows/doors as wood-aluminum in special paint + KNX throughout the entire house + spots and sockets in the laundry basket, they obviously have to upgrade significantly... but they also wouldn’t be building with Town & Country.
- our stair landing (1m x 1m) was a flat 250 euros + filling the stones (1m² just under 40 euros)
- the running meter of gravel protection strip around the house about 24 euros
- building survey of the garage was 500 euros for me... house a bit more expensive...
Rainwater drainage would be the only really relevant thing, because cisterns etc. can already cost a bit more.