Who we are

We are an aggregation of several companies specialized in the field of housing, repair, production and assembly activities, as well as interior furnishings.

The whole process of housing construction is completed. We research, buy, assign design, perform the construction of an object in all its stages and phases.

We make repairs in any kind. The organization also allows us to do such after accidents.

We make repairs from the foundations to the roof of a building object.

We have our own workshop for joinery, with the possibility of executing all sorts of orders. The cycle is closed - from production to installation.

Interior furniture is our strength. We have all kinds of specialists in all areas. We have countless design and performance awards. We furnish spots from very standard to award-winning ones.


Our history starts in 1989, when we register one of the first private construction companies in Bulgaria named Sole Trader "Metallurg Probebit Engineering". Then, over the years, we have realized hundreds of sites in Sofia and the country. With the process of work, we have repeatedly hatched the companies we work with. To recent date, the operating companies are:

"Interstroy HM" Ltd.

"Interstroy H" Ltd.

Investstroy HM Ltd,

Intercorporation Ltd.


Nikola Mutafchiev Manager

He has been working in the field of construction since 1978. He has two higher education - engineer - metallurgist, colored and rare metals.He participated in the construction of many sites of national importance,.

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Никола Мутафчиев - баща

Nikola Mutafchiev- son Manager

He has been active and active in the field of construction since 2008. He initially started in the family business as a Head of Sales Department. He graduated from higher education in Sofia.

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Никола Мутафчиев - син