Calculation interior finishing: heating, sanitary, bathrooms, floor coverings

Yes, certainly, but nowadays there is the internet and it says, joka from 35 EUR

Certainly! And who installs it? Right - so it depends on that.

“[...] our optical favorite is currently a ship deck for about 30€ gross. [...] and according to the carpenter in the family offers reasonable quality - so why should I take a more expensive one?

[...] we have about 13 linear meters of natural stone with a matte surface [...] received (and installed ourselves)”

Strange that some people here still write what they did themselves to make it cheaper. The thread starter is talking about interior finishing without own labor!!

And ready-installed floors under 50€/sqm simply don’t exist here..

And that is without tiles, only wood!

I think, adding tile installation, one will have to reckon on an average of around 100€/sqm installed for the entire house.

Not every builder has the time/relatives for own labor!

My point was to show that you can also get the material cheaply (and with good quality-> that's why the reference to the carpenter, otherwise people would just say again that the material can't be any good...).

I doubt, for example, that for installing window sills, an additional €3,000 in labor costs would be added to reach the €4,000 mentioned here for window sills.

Since a finished shell construction is to be purchased, it comes down to awarding individual contracts. In my opinion, one can definitely consider buying materials and labor separately if one is not tied to a general contractor. And if I haven't misread, the OP is now considering (minor) personal contribution?

Yes, certainly, but nowadays there is the internet and it says, joka from 35 EUR

And the internet also delivers it to you then?

I doubt that for example, for having window sills installed, there would be an additional €3,000 in labor costs to reach the €4,000 mentioned here for window sills.

You are now basing it on your 13 linear meters. But since this is about a house with 190 sqm of living space, I don't think €1,000 for natural stone material will be sufficient. You also have to consider that adhesive etc. is added.

You yourself say that these were leftovers and that you could save one-third because of that. Although there are alternatives to natural stone where you could get by with the €2,400 mentioned by the original poster, including installation. I did mention that as well.

As a comparison: For example, in our 175 sqm living space, we have about 22 linear meters of window sills. We would have paid about €3,800 including installation.

Because there are natural stone installers in the family, we were able to save around €2,000 and ended up with sills and material costing just under €1,500. The rest is labor or compensation for effort.

But self-installation is not the topic here.

Hello Axel,
The calculation seems more realistic.
Regarding the electrical work, I can only say: even with cheap switches and without KNX, you need a satellite dish or some LAN sockets, some toggle switches, twilight switches, separate heating circuits, 7-10 sockets per room, outdoor cables, etc. You have to expect that you can’t just use internet or hardware store products that a professional company then installs for you. That works with EL or through MyHammer, but not if you take a professional from your local area.
Regarding the flooring: better not to piece too much. You hardly save anything by choosing the cheapest in the storage room. The more uniform the floor area, the more spacious the house will feel later.
Don’t save on the plaster and don’t take the cheapest Q2. Q2 is okay in itself, but lime is very soft.

So that you can see it also works the other way around, here are our costs for 140 sqm of living space

I’ll write down our experiences in the circle of acquaintances here: (without own work)

30,000€ - Heating & Sanitary (underfloor heating / 18 KW gas)

I think it will rather end up at 35,000€ here (without ventilation system)

18,000 € - Bathrooms (1 large bathroom / 1 guest WC)

Will probably be tight with "upscale" equipment, but possible. I would calculate 20,000€.

For these two items, we paid a total of 31,837.26€ for air-to-water heat pump including central ventilation system with heat recovery, underfloor heating, 1 bathroom with bathtub, rain shower, WC and double washbasin, 1 guest WC with WC and washbasin, sink in garage

15,000 € - Floors (190 sqm x 78 € including baseboards)

Possibly feasible with cheap laminate.
Otherwise, I would calculate 20,000€ for "better" flooring.
With many tiles (hallway, corridor, utility room, bathrooms) also plan 25,000€..

In our case, 9,000€ for tiles in bathroom, guest WC and utility room and about 3,800€ for laminate in the rest of the house as own work

5,000 € Screed

Including foil etc. I rather think 8,000€

For us, 2,390.47€ for 140 sqm
oh yes... and 36 sqm garage roof

9,600 € Plaster

Gypsum plaster about 14,000€
Lime plaster about 20,000€

For us 7,320€ for house and garage.

5,000 € Doors (8 pieces)

Maybe possible without frills. However, with special features (e.g. glass doors/decor) you can quickly get 8-10,000€.

2,695.35€ for 8 hollow core doors in white and one glass door... including installation

5,000 € Stairs

Covering approx. 5-8,000€ (wood or stone)
+ if needed railing approx. 2,000€.

3,967.46€ for stairs made of natural beech

2,400 € Interior window sills

Is okay for DIY store quality. With better stone you can also calculate 3-4,000€.

1,540.80€ for 9 interior window sills and 12 exterior window sills... including installation

18,000 € Painting work (including wallpapering)

Unfortunately, there are no experiences in the circle of acquaintances, as everyone does/did it themselves.

For us, just a few hundred euros for paint and brushes and such...

10,000 € Electrical work

Even Spartan electrical work is hardly possible below 12,000€.
With a few more sockets and one or two switches, you usually end up over 15,000€
Experience values for medium, upscale equipment about 18,000€

11,279.11€ for sufficient sockets, LAN in all rooms, LED spots in hallway and bathroom, otherwise standard (garage wiring, a few outdoor sockets etc.)