Planning error GU - Ceiling height

Good morning everyone,

hopefully I am in the right forum for my concern...

We are currently building a city villa, 180 sqm. Normally we have a ceiling height of 2.40m. Now the plumber noticed that, among other things, the exhaust pipe in the utility room was forgotten to be planned from top to bottom. Now a hole was simply drilled in the ceiling (we have a very expensive concrete ceiling), pipe and some cables were pushed through. The whole thing comes from above and comes out in the bathroom, from there a hole was punched in the wall into the utility room. We were presented with a fait accompli. Now the entire ceiling in the bathroom is supposed to be lowered by about 20cm, which, in my opinion, would mean a loss of the promised room height. Actually, it was supposed to be accommodated in the bedroom, where a casing of 20x20 cm would just be installed in a corner, which, however, would mean a small loss of living space.

My questions:

1) How are exhaust pipes normally installed?

2) Are they allowed to just drill holes without consultation and lower the ceiling? It was agreed otherwise.

3) Do we possibly have the option to file a complaint and get a discount? - We want the concrete ceiling in the bathroom and not taped drywall.

I would be very grateful for tips and suggestions!!!

Best regards

What do you understand by "Abgasrohre"?

2.40m is not exactly generous. If another 20cm are to be lowered from that.

That's what the sanitation guy called it. - I don't know exactly what it is. In any case, it has something to do with the gas.

2.40m is normal, I've never had higher rooms in my entire life. But to take so much away from that, I find it cheeky, especially since the promised concrete ceiling is lost because of it.

2.40m can quickly feel oppressive, especially in larger rooms. If then another 20cm are missing and only 2.20m remain, I certainly would not accept this. Especially not if it was agreed otherwise.

Hi,

isn't 2.4 m already the minimum room height? It must not go below that at all? 2.4 m is already little, below that is no longer acceptable!

Now the question arises about your contracts and work plans. If you are building with a general contractor and 2.4 m ceiling height is specified in the work plans you approved, they also have to build 2.4 m. Anything else is their problem!

If you are building with a property developer, they can do a lot, after all the building belongs to them.

What I also don't understand is why they want to lower the entire ceiling in the bathroom? Just because of a pipe in one corner? That is completely nonsensical!

The flue pipe of the boiler has to run somewhere, there's no way around that. Normally it should be placed somewhere on the walls and then run more or less vertically upwards.

I would never accept a lowered ceiling at 2.2 m, that would make the house nearly unsellable!

Best regards,

Andreas

Lowering the ceiling:
It’s not nice, but 2.20 m is already permissible in secondary rooms according to building regulations.

§ 43 NdsBau - Habitable Rooms
(1) 1 Habitable rooms must have a floor area sufficient for their use and a clear height of at least 2.40 m over at least two-thirds of their floor area. 2 When measuring the floor area according to sentence 1, parts of the room with a clear height of up to 1.50 m are disregarded.
(...)

However, the bathroom is not a habitable room, but a secondary room, so the 2.40 m requirement does not necessarily apply here and would therefore already establish a defect.

Exhaust pipes mostly run vertically in shaft coverings and are also routed upwards through the ceiling/roof. Soundproofing must certainly also be taken into account.

The concrete ceiling is still present, it just now has a hole.
Exposed concrete was presumably not agreed upon?
Load-bearing concrete ceiling for the attachment of lamps etc. presumably also not. I assume the B-ceiling is due to the static structure – and it was not explicitly agreed that only concrete and nothing else may be installed?

2.20 m, however, is not the agreed 2.40 m.
Would a shaft in the bathroom under the ceiling instead of lowering the entire surface possibly suffice? Possibly a right to reduction.

And how would the execution have been without planning errors? Why is routing through the bedroom no longer possible now?