Experiences with construction companies in Berlin and surrounding areas (approx. 50 km)

Make yourself an Excel list, all trades, from earthworks, construction road, shell construction .... to wallpapering, terrace, moving, paving paths, fence system enter your planned numbers from the providers there and compare. In the construction phase we also entered the invoices there and now know our costs very precisely. Example electrics, plan 7K€, our desired execution 15K€, can be upgraded with KNX up to 50-100K€. The 30K€ also cost something in execution, that is not a lottery win to spend several times, have fun planning and comparing Regards Nida

- 12,000 Smarthome (Somfy)

Surcharge or total price for electrical trade? And what exactly is supposed to become so "smart"? Number of participants, etc.

Surcharge or total price for the electrical trade? And what exactly is supposed to become so "smart"? Number of participants, etc.

In short, what I have kept:
Control via touchscreen and app:
- Underfloor heating
- Alarm system (including information about window/door openings)
- Google and Alexa compatible
- Opening/monitoring of the roller shutters
It's just an "additional module". If it fits within the price, I will look into it further

Did you receive a construction service description?
It usually contains the crucial information.

Did you receive a construction service description?
It usually contains the decisive information.

I received it for the construction of the bungalow and which systems are used. It depends on whether you want to build KFW 55, 40, etc. The construction service description for the bungalow is 20 pages long. Among other things, it included these points:

- Floor slab (including waterproof concrete, underneath a capillary-breaking layer of 22 cm thick gravel-sand mixture)
- Exterior walls (24 cm hollow bricks + 12 cm insulation + 2 cm plaster)
- Windows (fiberglass; approved as windows for passive houses; company Brömse)

The following points were described in the construction description "The Bungalow":
1. General
1.1 Notes
2. Construction planning
3. Shell construction
4. Roof truss/wood construction
5. Roof covering
6. Façade - General description
7. Dry plaster
8. Front door system/windows
9. Electrical installation
10. Heating/sanitary
11. Interior plaster - General description
12. Screed - General description
13. Tiles
14. Interior doors
15. Natural stone work - General description
16. Front entrance stairs - General description

What are the crucial points you MUST pay attention to?

It's just an "add-on module". If it fits within the price, I will look into it more

Yes, I know the device. It costs 300 euros. A 12K surcharge is quite steep. Sure, there are more features like the "fancy" touchscreens, etc., but still.