New gas pipeline in Berlin costs €5000

Hello everyone!
I bought a house with a plot of land on which a gas pipeline already runs (picture, blue line). Since the pipeline runs through the seller’s property and for whatever reason he does not want this, a rerouting of the gas pipeline was contractually agreed upon. The old pipeline is to be cut off on my property and newly laid southwards to the street (picture, red line).

On the website of NBB Netzgesellschaft, tiered flat rates for gas connection and pipeline can be seen; for 60 meters that would be €2600 gross.

In my case, only a new pipeline is to be laid from the existing house connection across the property to the sidewalk. For this, I am supposed to pay almost double (€5100 and €3300 without earthworks), although less work is involved. According to an employee of NBB, this is because it is a rerouting in my case. These are subsidized less compared to a new connection. This subsidy seems very unclear and hard to understand to me because the price is significantly higher and also deviates from the estimate of an employee. She had said before that the price would not differ much from the information on their website. Has anyone had similar experience and if this cannot be changed, are there other, cheaper alternatives? Since NBB is the only company authorized to lay pipelines, I cannot resort to another one. I could possibly have someone else do the earthworks, but whether I save much with 60 meters is uncertain. Thanks in advance

It depends on the current state of the house. Keyword: heat loss. It should also be considered what kind of heating (i.e., everything from the boiler onwards) is currently installed. If major remodeling is necessary, nothing is gained with the heat pump either.

And, do the owners of the plots 390 and 389 agree to the relocation of the pipeline?

As already correctly mentioned, for a new connection. Flat-rate initial connection prices no longer apply for connection changes. Furthermore, new connection flat rates only apply if work is carried out exclusively on the property of the connection holder; quickly crossing over 3 third-party properties (of which apparently 2 do not fall under NDAV) cannot be covered by flat rates. Furthermore, the existing house connection line must be taken out of service and possibly dismantled. This is not free either. Conclusion: €5,100 including civil engineering over third-party properties, line securing and dismantling is comparatively a bargain, I would commission immediately. Or first offer the property seller €4,500 for the registration of a line easement in your favor on his property, maybe he can still be persuaded.

Not even with the up to 45% subsidy and the resulting energy savings? I would have an expert calculate all of that for me.