I want to ask for the illegal redevelopment of real estate sq. Necessary ...?

In order to legally carry out all actions, you need to apply to the State Architectural and Building Inspection for permission to carry out redevelopment of the apartment. After the permit is granted, a BTI specialist should be invited to inspect the home. The inspector will carry out a technical examination of the housing, help develop the project. After developing the project, you need to submit a declaration that construction work has begun. After completing the redevelopment of the apartment, develop a new technical passport for the apartment and declare that the housing changes are finished.

After that, you need to contact a notary to enter the relevant information about housing in the State Register of Property Rights.