Keep in mind that these numbers are for above-average flats, ie in good locations, of good size (40-60m² or 60-80m², depending on the city) and for well-earning positions. Probably not the top 1%, but still generally well paid jobs. As such the presentation is inaccurate. Those are not "average prices in the city", but "average prices for good flats in good districts, comparable with Brussels".
OBTAINED THROUGH SURVEYS WITH ESTATE AGENCIES, COVERING A SPECIFIC HOUSING SEGMENT
The rent data presented in this booklet are part of a wider work programme, whose objective is to compare the relative cost of living of international civil servants in any place of employment with that of Brussels, the reference city.
Since the aim of the entire exercise is to compare "like with like", the neighbourhoods surveyed may not necessarily be in those areas where expatriates actually live but are comparable with those actually occupied by officials in Brussels.
These neighbourhoods are described as residential areas of good quality, favoured by expatriates and professional people such as international civil servants, university staff, doctors, managers, and similar professionals, who pay their rent by themselves (i.e. not paid by their
employers).