Comprehensive Reforms Company and Certified Construction Firm

ISO 9001 certificate

The quality of our work, materials and professionals certified and recognized internationally. ISO 9001 is a standard system of quality management.

Register of Accredited Companies

Certificate that qualifies us as a construction firm that meets the requirements of capacity and quality in the prevention of occupational hazards.

Buenas Prácticas

Disponemos de un programa propio de control de calidad y de un plan de seguimiento de la correcta ejecución de las obras.



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About GSIconstructora | Comprehensive reform Company

GSI construction firm in Barcelona, we are a company of comprehensive reform and construction that have been offering the best services for more than 15 years. In our team we have all professionals to perform any type of construction, comprehensive reform, building refurbishment, maintenance and installation.

As a construction firm in Barcelona, we can ensure our professionalism and guarantee all our work. We have a customer base behind us, guarantee and professionalism.

Integral reforms of apartments, business premises, offices, this service is one of the most requested. Reforms are meticulous, professionals, accurate and elegant. Our team of experts not only reforms an apartment but transforms it into what the owner always wanted.

Although our construction firm is located in Barcelona, we work all around Spain. We report with pictures and videos about the process of refurbishment to all our customers living abroad. We want our customers to be aware of all aspects of the contracted service, because we are one of the few construction companies in Barcelona that implements today technology to keep our customers aware of the whole process being carried out.

Ask for free quote and see for yourself that we are one of the best construction firms in Barcelona to perform any construction service, comprehensive reform, building refurbishment, maintenance and installation.