Comparative offer roof pitch

The drawing error was caused by the drafting office. 30° DN was written on it. But 25° was drawn. The static calculation, the building permit, the contract, all say 30°. I don't know what such a roof conversion costs, generally it consists of insulation wool and foil, a counter battening and tongue-and-groove boarding are planned. This issue makes me quite unhappy. Is a remedy appropriate? Erect scaffolding, remove all roof tiles completely, remove solar collectors, replace rafters and then reroof.

In the elevations you can clearly see with the naked eye that the roof pitches are different. Why didn't you object to that? The architect also bears some responsibility. You are only losing usable storage space. Your change request is disproportionate. As already pointed out, we are talking about approx. 19 m3 of converted space * 400 euros = 7,600 euros. I would deduct this amount from the construction sum (roof sum).

You are merely losing usable storage space. Your change request is disproportionate.

I'm really not a troublemaker, but the lack of storage space can be really significant for the use of the house, depending on the planning, hobby, and amount to be stored. The "merely" is quite relative. As an alternative, the OP could also have a possibly already planned luxury garden shed built as compensation.

As an alternative, the OP could also have a luxury garden house, possibly already planned anyway, built as compensation.

Or something like that, yes. In any case, I see my compensation proposal as an absolute win-win: relatively because it is roughly cost-neutral and only a symbolic little slap for the general contractor, and the OP exchanges inconveniently accessible storage space 1:1 for the same "amount" of conveniently accessible space. His contribution to the peace pipe is 9 square meters of floor area in the building setback, where it doesn't hurt. The feeling of satisfaction from a financial compensation would quickly dissipate, but the annoyance over the lost cubic meters of storage space in the attic would last longer. I see the garden house as an adequate variant to my proposal with the storage room.

The theoretical m3 of enclosed space were never really fully usable.

2 m line 25 degrees 4 m2, 30 degrees 10 m2 = - 6 m2

1 m line 25 degrees 37 m2, 30 degrees 42 m2 = - 5 m2 *0.5 = - 2.5 m2

8.5 m2 * 1200 Euro / m2 = 10,200 Euro.