Question about electrical installation (building work description)

Hello everyone,

after a longer period of interested reading, I am now speaking up here myself with my first question.

In our construction service description, the following items are listed for electrical installation:

Hall/Entrance:
1 push-button switch from three locations to one lighting point
1 single socket
1 off-switch to one outdoor lighting point
1 doorbell system with door button and 2-tone gong

Staircase:
1 push-button switch from four locations to one lighting point
1 single socket

Living/Dining Room:
1 push-button switch from three locations to one lighting point
1 two-way switch to one lighting point
1 off-switch to one outdoor lighting point
1 control-off switch to one outdoor socket
1 triple socket
1 double socket
4 single sockets
2 empty boxes with wiring for telephone or antenna without connection boxes

Kitchen:
1 two-way switch to one lighting point
3 double sockets
2 single sockets
1 cooker connection socket
1 special circuit for dishwasher

WC:
1 control-off switch to one lighting point
1 single socket
1 off-switch to mirror cabinet outlet

Storage:
1 off-switch to one lighting point
1 single socket

Utility Room/Washing Area/Technical Room:
1 off-switch to one lighting point
3 double sockets
2 single sockets

Bathroom:
1 control-off switch to one lighting point
2 single sockets
1 off-switch to mirror cabinet outlet

each Children’s Room:
1 off-switch to one lighting point
1 double socket
2 single sockets
2 empty boxes with wiring for telephone or antenna without connection boxes
1 battery-operated smoke detector

Parents’ Room:
1 two-way switch to one lighting point
3 double sockets
1 single socket
2 empty boxes with wiring for telephone or antenna without connection boxes
1 battery-operated smoke detector

Dressing Room:
1 off-switch to one lighting point
1 single socket

Study:
1 off-switch to one lighting point
2 single sockets
2 double sockets

Storage Room:
1 off-switch to one lighting point
1 single socket

Miscellaneous:
1 heating connection without external sensor, thermostat
1 equipotential bonding
2 x additional local equipotential bonding for bathroom
1 special circuit washing machine
1 special circuit dryer
1 x 400 V socket mounted under the meter cupboard
1 x wiring of the underfloor heating
1 x underground cable for garages
1 off-switch to one lighting point for attic
1 cable pre-installation for attic (for later attic expansion)

Can anyone possibly tell us from their experience where and how we should upgrade?

What exactly does "1 push-button switch from three locations to one lighting point" mean? What exactly is meant by "from three locations to one lighting point"?

Many thanks in advance and

best regards,
Masipulami

Don't ask me how to read the construction service description for your push-button switch. However, it should be said about the equipment that it is only a minimal configuration. Example living/dining area with nine sockets. If you do not want to work with multiple power strips, this is far too few. You need sockets for: TV, receiver, DVD/BluRay, PlayStation or similar, telephone base station, hi-fi, floor lamp, lighting for cabinets/display cases, charging cables for mobile phone/tablet/notebook, etc. Then there are only two lighting points = one at the coffee table and one at the dining table (I suppose). Do you also want wall lamps? Does the housewife want to install illuminated decorations in winter, for example?

I would also avoid single sockets as much as possible and take double sockets instead. Then you could also install network cabling (the telephone can also run through it). Speaker cables for stereo system/surround sound directly in the wall? Cables for wall-mounted flatscreen directly laid in a cable duct recessed in the wall?

You can never have enough sockets; additional wall outlets are also good. In the bathroom, for example, the mirror cabinet could be switchable both at the washbasin/cabinet and from the door. We have planned about 140 sockets for 250 sqm of living space (including storage rooms, since we do not have a basement). In addition, there are countless ceiling spots + additional outlets in ceilings and walls to at least have the possibility to connect lamps there.

Ok, thanks already for the response. I had suspected that this is a minimal configuration. Hence my question.

140 sockets?! Intense. I really don't think we need that many.

What additional costs should be planned for the extra requirements?

Roughly, your questions have already been answered, namely here:

https://www.hausbau-forum.de/threads/elektroplanung-was-zu-beachten-vorgehen-erklaerungen-und-tipps.8485/

140 sockets is not so unrealistic.
We planned 121 for 171m² of living space.

Regards

Ok, thanks already. And what can you normally roughly expect as additional costs per socket? Of course, I will also ask my builder about it, but maybe someone can already give some pointers.

The price varies greatly...usually between €30 and €100 per socket or empty conduit box...depending on the electrician