Strassen, Luxembourg

With a population of just over 10,500, Strassen is one of the smallest communes in Luxembourg. However, don't let its size fool you - this town has a reputation for being one of the most expensive places to live, with average real estate prices reaching €9,798 per square meter for existing properties and €11,500 for new builds.

The strong growth in Luxembourg's population has led to the development of new districts in Strassen, catering to the influx of expatriates drawn by the town's proximity to the capital and its high quality of life. But this rapid expansion has come with a cost - the bureaucracy surrounding construction and permits is a persistent headache for residents.

Strassen may be the right fit for those seeking an affluent, well-connected suburb, but its steep housing costs and bureaucratic hurdles mean it's not for the faint of heart.