Checklist for house construction - what should not be forgotten?

Depends on where you live and how

I didn't miss an air conditioner last year. The visitors even assumed we had one.

The greened steep slope behind our house is good weather protection.
Ventilation system in summer mode
Shading.

Plan windows in two directions in children's rooms and living spaces. This way, enough light still gets into the rooms

What one should never forget when building a house? That the bank owns the house until it is paid off... For some, 10, 20, or even 30+ years... That teaches humility and strengthens character.

An outdoor shower would be indispensable for me. Really nice in the summer, and you can still clean the dog "outside" after a mud fight and then dry him off clean.

Outdoor shower is a great thing.
Thoughts about the access path to the garden are also important: How do you get stuff and equipment into the garden and back out again?

Or a rinse shower to walk through, nordlys, you know it now

I would first divide the checklist into different categories so that you don't lose overview. 1. Topics land (purchase, notary, taxes, etc.) 2. Additional costs and ancillary services (insurance, utility connections, etc.) 3. Topics architecture and building 4. Technical systems (heating, ventilation, sanitary, electrical) 5. Interior fittings (kitchen, furniture, etc.) 6. Garden and outdoor area 7. Moving Such a list can then also be associated with costs and used as a cost checklist during the construction process.