Construction Company Monolit - 21 - Andonov and Zahov Ltd. was established in order to offer on the construction market completed engineering products. The construction company offers overall implementation of construction sites including construction of engineering infrastructure.
The company provides all types of construction and assembly works - foundations (excavation, formworks, reinforcement, concrete, masonry), finishing works, interior and exterior water supply and sewerage networks and electrical installations. In our work we investigate and use the latest building materials.
Construction Company Monolit - 21 - Andonov and Zahov Ltd has concrete plant in Petrich - Industrial zone, Struma Street. Phone: +359 7456 03 82. For the produced concrete we have the respective certificates for compliance issued by the Research Institute of Building Materials.
To the Construction Company have been issued the relevant certificates for completion of construction works with the following range:
- Certificate № I - 004599 - for execution of first group construction works, from first to fifth category;
- Certificate № II - 001100 - for execution of second group construction works, third and fourth category;
- Certificate № III - 001113 - for execution of third group construction works, second and third category
- Certificate № IV - 002103 - for execution of fourth group construction works, from first to third category;
- Certificate № V - 003554 - fifth group, execution of different types of construction and assembly works;
Construction Company Monolit 21 - Andonov and Zahov is certified under the standards ISO 9001:2008; ISO 14001:2009; BS OHSAS 18001:2007.
- Under 12/11.01.2008 and 0069/06.11.2008 Protocols, we entered in the Central Professional Register of Builders.
- A regular member of the Bulgarian Construction Chamber.
- We have highly qualified managerial personnel and executive staff who have proven themselves repeatedly in the execution of a number of major construction projects.
- We have our own reinforcement workshop. The working in it specialists perform qualitatively all the reinforcement steel.
- We have the necessary heavy and light construction equipment, with which we cover the timely execution of the construction and assembly works.
- The company has a 10,000 m ² RERI formwork type
Construction Company Monolit 21 - Andonov and Zahov has a qualified team of engineers and construction workers with extensive experience in the construction field.
- Manager - Eng. Ivan Borisov Andonov - Higher education- engineer in Industrial and Urban Development;
- Production and technical department and offers - three engineers;
- Direct managerial membership and technical executives: 10 people - three engineers, two with college education and six - secondary special education
- Steel construction workers and welders - 22 people;
- Shuttering workers and masonry shuttering workers - 24 people;
- brick layers and mason-plasterer - 25 people;
- Workers in Tiling and flooring - 7 people;
- water supply and sewerage specialized groups - two groups - seven people;
- Electro specialized groups - 2 groups - 8 people;
- Engine-drivers, operators and drivers - 14 people.
In the field of construction, Construction Company was completed the following construction sites
- Car dealership with restaurant and residential area Vodenov - Levunovo village Sandanski municipality
- Shop for industrial goods and car repair shop, Sandanski
- BILLA supermarket Petrich
- Reconstruction of kindergarten - Drangovo village, Petrich Municipality
- Two residential buildings, shops and underground garages, in Druzhba, Sofia city
- Office building with production workshop for aluminum and PVC windows ETIKOM - Petrich
- Gas station - Sandanski
- Happy Bar & Grill - Sandanski
- Family Hotel Sandanski
- Family Residential building with shops and garages Spartak - town of Sandanski Sandanski Municipality
- Residential buildings Type I, II, III and IV Polenitsa village, Sandanski Municipality
- Residential buildings with garages, cafe and Fitness hall Sandanski
- Residential building MEDITE Polenitsa village, Sandanski Municipality
- Residential buildings Block I, Block II and Block III Polenitsa village, Sandanski Municipality
- Residential Building Panorama, Polenitsa village, Sandanski Municipality
- Residential buildings with shops and garages, Botevgrad
- Residential building with shops - Petrich
- Residential building – Sandanski and many others






















