Specialists thoroughly studied this issue and found that above the 7 th floor of the weakening of the magnetic field is such that it adversely affects health. Attenuation is not a health standard, but the decrease of the field twice already bad.
Related article: In the UK, built a whole street of eco-homesIn addition, doctors considered the impact on the field of material from which the building is constructed. Thus, the concrete reduces the field by about 10%, brick - by 7%, and the tree just 1%. But you will not find any of the many-storey building which was built of wood.
So if you will need to estimate the proportion of the apartment and to determine its financial equivalent, then these factors should pay attention to experts, in fact weakened geomagnetic field harms the cardiovascular, nervous and immune systems, creating an additional body load.