Nordstemmen station it had suffered. It was found that the conservation status of the building had been affected by the spread of Serpula lacrymans (dry rot), causing serious deterioration to the roof and other parts of the wooden structure; almost the whole building is affected. Subsequently, the previously closed windows were fitted with grills, supporting the ceilings, which were in danger of collapsing, and new coverings were installed over the roof. Because no buyer had been found for the listed building, Deutsche Bahn submitted an application for its demolition to the Federal Railway Authority (EBA) in Hanover in the summer of 2005.
Serpula himantioides appear as distinctive fruiting bodies on the exterior of the host. "S. himantioides" prefers the moist wood of coniferous hosts such as fir, larch, spruce, and pine. It is the causal agent of butt rot disease, the symptoms of which include rotting the heartwood at base of tree, as well as damage to the tap root and cores of lateral roots, but standing trees show no signs of infection. It also a common cause of timber rotting in buildings, which has made this pathogen difficult to differentiate from "S. lacrymans" because of their similarities. This disease often goes unnoticed initially