What is this?
According Italian law these are works aimed at the renovating, conservation or improvement of the building.
Extraordinary maintenance works are those that also regard the structural parts of the building, such as load-bearing walls, pillars, beams and floors.
Furthermore the replacement, or repair, or adaptation of the house to the new anti-seismic laws (the new code is from 2008) of structural parts such as the renovation of the attics, roofs, stairs, pillars, beams, walls bearings, foundations, or the demolition of some parts of the building and the reconstruction of the same.
In general, extraordinary maintenance works have the purpose of prolonging the life of the building and improving its performance.
So renovating the house to increase energy performance is also included of extraordinary maintenance.
What you need to know about carrying out to do this work ?
Before starting the works, you just have to make a written communication to the Municipality you belong to, indicating the type of work to be done and the designer of the works.
In this case, the SCIA (certified notification of the start of work) is required.
If the works also concern the load-bearing structures of the house, the structural project is also necessary in addition to the architectural project.
This must be transmitted and approved by the Regional Civil Engineering Office (Genio Civile) which must allow the authorization for the works (the Civil Engineering office has a maximum time of 90 days to give its permis).
In this case it is also necessary to appoint a Construction Manager (Direttore dei Lavori). The Construction Manager will ensure that the project is carried out in a workmanlike manner.
He will then issue orders to the construction company during the works.
Furthermore, the project of structures must also include a geological report.
When the works are completed, the static testing of the works will be carried out. The Municipality appoints a Construction inspector (architect or engineer).
The Construction inspector inspects building structures to ascertain structural soundness, safety, and compliance with regulations.
So, in summary:
First you need to have the architectural project, then the project of the structures and the geological report. After that you need to appoint a construction manager and entrust the construction company the works. At the end there will be the testing of the works.
Professional roles
If the works do not concern the structures:
Architect or Engineer for the architectural project.
Architect or Engineer for construction management
If the works concern the structures:
Architect or Engineer for the architectural project.
Architect or Engineer for the structural project.
Architect or Engineer for the construction management
Geologist for the geological report
Costs
In this case the costs you will have to bear are:
architectural project
structural project
construction manager
geological report
costruction company
municipal charges
charges for project transmission to the Genio Civile
costs for static testing