Built-up Area:Sonata residential complex is located in Madost 3 district of Sofia, Bulgaria. The administrative address of the complex is “Filip Avramov” Str. Entrances „А”, „Б”, „В”, „Г”, „Д“, „Е“, „Ж“, „З“. The background area of the complex is private for the complex residents with green areas and relax zone. There are gated alleys, roads and emergency exits. The building has a common basement levels with two big underground areas which include: garages, parking spaces, underground street and ramps, technical premises, technical utilities and installations. On the ground floor are situated 23 retail premises and 8 residential sections, each one with a separate entrance and lobby area. The complex also includes a gated garden area with an open-air parking, 239 apartments with different size and view. Sonata is registered as a complex, providing comfort, personal space and care for its residents.