NSA was founded with the commitment of offering each of its clients a high-quality technical consultation, investigation and appraisal service in the construction and civil engineering sector.

With more than 20 years’ experience in appraisal work, NSA is an initiative formed with the objective of solving the specific problems that arise for insurers, construction companies or developers and diverse public and private entities.

Our in-depth knowledge of the construction and civil engineering market from a technical, financial and legal standpoint allows us to provide a specialised service, in constant evolution, all while maintaining the quality levels to which we are committed.