We rehabilitate residential buildings at all levels, repairing facades and roofs, insulation, removal of barriers, etc., seeking quality and guaranteeing our processes.

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The restoration of historic residential buildings, or of any other nature, requires above all vocation. Only in this way can it assume the responsibility of intervening in our history. Our group has the best professionals in the sector.

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We help property managers in their repair management and maintenance of residential buildings, performing a professional diagnosis and proposing specific repairs, without demanding a committment, through our specialized technicians in the field.

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The construction of a new floor, from small single-family homes to important villas, has always been a constant in our activity. If you are thinking of building your own house, contact us and we will advise you.

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The company

IZ4 is the culmination of 10 years of effort dedicated to improving your quality of life.
Whatever your need, we offer you our experience and the best professionals.

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Latest projects by IZ4

Reviving construction ¡Contact!


Paseo Anelier 6, bajo
31014 Pamplona-Iruña (Navarra)
948 30 49 67


c/ Plaza Irún 4, 1º A
20011 San Sebastián-Donostia (Guipúzcoa)
943 46 09 12


Ashforf House, 100
College Road First Floor, Harrow
Middlesex HA1 1BQ (United Kingdom)
+34 699 464 232 / +34 948 304 967