• ISO 9001:2015
• ISO 45001:2018
• ISO 14001:2015

• BCC: First group of constructions - from second to fifth categories
• BCC: First group of constructions - structures of art. 137, para. 1, item 1, letter "M" and item 4, letter "E" and Item 5 and the letter "E"
• BCC: Second group of constructions - from second to fourth categories
• BCC: Third group of constructions - from second to fifth categories
• BCC: Fourth group of constructions - from second to fifth categories
• BCC: Fifth group of structures

• KRIB
• BAAIK
• AIKB
• KSB

MEDIA COVERAGE

THE OPERA BECAME THE BUILDING OF THE YEAR, newspaper Express, 20.12.2008

The National Opera and Ballet, received the award "Building of the Year 2008" in category "Buildings with special functions".
The Deputy Culture Minister Ivan Tokadjiev received the award from Prof. Velin Alexandrov, sales manager in TERAZID Ltd. and a member of the jury, during a ceremony at the National Theater Ivan Vazov.
The project, designed in 2007 by Arch. Konstantin Peev includes innovative construction technologies in Bulgaria. Unique is the new mobile orchestra with automated hydraulics, lifting it to a height of 2,50 m to the level of the stage, which increases the stage area with 200 square meters. This mobility allows conduction of spectacular performances and major concerts at the National Opera and Ballet.
New acoustic wall coverings are part of the decorative ornaments with a gold leaf effect. Precise The composition "Heaven" by Prof. Dechko Uzunov on the ceiling of the concert hall, is precisely restored. Construction and restoration works were carried out by technologically sophisticated to scaffold height of 20 m.