Minimum documentation for house handover

Is there actually a legal regulation for a contract for work under the Building Code regarding which documents the general contractor/prefabricated house manufacturer must provide us?

What is clear are the instruction manuals for the heating system, heating load, underfloor heating design, heating-up protocol, proof of hydraulic balancing, confirmation of blow-door test result, structural analysis, and thermal insulation certificate.

But what about plans? Does the heating installer and electrician have to hand over more detailed plans showing the exact routing of the pipes?

Or do I have to be satisfied with an electrical wiring diagram? Or am I allowed to request plans showing where which cable runs under the ceiling?

And where the heating installer has buried which water pipe in the screed?

Of all the things you take for granted, only the thermal insulation certificate is mandatory. Possibly also the operating instructions, but I am not sure about that. Everything else is only owed if it has been expressly agreed upon as such.

Execution plans are not mandatory. Neither creating them nor handing them over. Didn't you take any photo documentation during the construction phase?

Seriously? Regarding photos, I definitely took them. So then I really have to praise my house manufacturer... I already have the thermal insulation certificate, heating load, design of the underfloor heating, calculation of the controlled residential ventilation... Let's see what else there is

I dare to claim that there is no plan at all for the cable routing/pipe routing. In my opinion, the journeymen just laid it down randomly.

Hmm, since the heating installer was fussing about stagnation and recirculation of the water pipe, I do believe they had a plan. The piping definitely didn’t look like it was installed haphazardly... The electrical stuff looked much more chaotic.

Well, luckily I took care of heating/plumbing myself before the screed. Then I photographed the electrical work because of the amount of cables.

But honestly, I would have thought by now that it’s somehow mandated by law or anchored in a DIN/standard that you have to get documentation.

Well, I’ll just wait and see.