The city has quite varied architecture owing to the different architectural trends, which have influenced it throughout the years. The central part of the city and the odest housing estates of Sofia were built-up mainly with massive brick blocks of houses with beautiful facades in the typical socialist style and traditions and the majority of them have already become monuments of culture. The housing estates, which were developed later on in time – in the 1970s, were built-up predominantly with panel and monolithic concrete structure blocks. One of the characteristic features of the zones developed by the end of the 1980s is the vast inter-block areas with gardens and parks.

A new stage in the construction development of the capital started in the beginning of the 1990s – the so-called “new development”. Due to the fact that in the first years of the period there were no clearly established construction regulations, some parts of the city were over-built with blocks of questionable quality.

Some of the former villa zones, which have been turned into quarters of the city, are predominantly built-up with self-contained houses and low-rise buildings
New development construction is very widely spread on the territory of Sofia. New, modern, luxurious buildings, as well as multifunctional and residential complexes, offering maintenance and control of access, office and commercial buildings of diverse architecture and size are being built.
Sofia is divided into 24 districts, which, in their part are comprised of 90 quarters.