Company certifications

The company has invested in the continuous development and improvement of the management system quality, in fact it is ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 certified and SOA certified in five different categories.

The D’Onghia enterprise is fully qualified for the execution of public works thank to the SOA certification that attests our works are carried out accordingly to Art.8, Law 11/02/1994 n.109, for contracts in the public sector starting from €150.000. This certification is renewed every 5 years and is given following a technical and economical analysis of the company performance in that time frame.

SOA Category Class
OG1 - Civil and industrial buildings V - € 3,500,000
OG3 - Roads, highways, bridges, viaducts, railways, subways III Bis - € 1,033,000
OG9 - Plants for the production of electricity III - € 1,500,000
OG11 - Technological systems I - € 258,000
OS21 - Special structural works IV - € 2,582,000
Download the certifications and authorizations PDF

The improvement of the quality leads to cost reduction, as a quality product appeals to a bigger market therefore allowing cost cutting initiatives.
The company has obtained the worldwide-recognised ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 certifications, that attests the compliance with specified standards for:

  • The business and marketing plan according to customer needs
  • Management Responsibility
  • Resource Management
  • Product Realization

The company also has registration in the Register of Environmental Managers in the Categories: 8 C (from 15000 to 60000 tons per year) intermediation of hazardous and non-hazardous waste, 4 B (from 60,000 to 200,000 tons per year) Transport of special non-hazardous waste, 5 F (less than 3,000 tons per year) Transport of hazardous waste, 9 E (construction work up to € 200,000) Site remediation and the Authorization for the transport of goods on behalf of third parties


Settore pubblico

Public sector

The D’Onghia enterprise has an extensive portfolio of public works that confirms the high quality of its services. Over the years it has realised many...

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Settore privato

Private sector

The two main principles the D’Onghia enterprise is based on are the realisation of private dwelling and the building restructuring and maintenance...

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Energie alternative

Alternative energy

The company has a solid experience in the field of renewable energies, having installed a large number of solar panels and wind turbines...

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