Offices

This exclusive office building, Sáenz de Oiza’s masterpiece of 20^th century Spanish architecture, is located right at the heart of Azca.

Castellana 81 is now positioned at the cutting edge of sustainability, accessibility and technology. The building has been awarded Platinum LEED certification in the Core & Shell category, making it the first office building on the Paseo de la Castellana to achieve this top level of certification. In addition, Castellana 81 boasts the top 5-star AIS rating (Level of Accessibility Hallmark). This makes it the first singular office building in Spain to hold the highest level of AIS certification.  In November 2017, it was awarded the 2017 DIGA Accessibility Award by the Shangri-La Foundation.

In May 2018, Castellana 81 obtained the Gold WELL certification in the Core & Shell category, becoming the first WELL office building in Spain and the fifth Gold WELL Core & Shell building in Europe.This innovative system certifies that the design, construction and operations of the building address and have a positive influence on the health and well-being of people. It evaluates in situ the impacts of the building regarding seven concepts: air, water, light, fitness, comfort, nourishment and mind.

In April 2018, Castellana 81 won the accolade of Best Renovation 2017 in the Spanish Office Association (AEO) awards.

In September 2019, Castellana 81 received the award "The Architecture MasterPrize” in the category ARCHITECTURAL DESIGN - Restoration & Renovation. In May 2018, the building Castellana 81 won the title of Best Non-Residential Property Intervention in the ASPRIMA-SIMA prizes. In October of this year it also received the Madrid Institute of Architects COAM 2018 Prize.

Castellana 81 has obtained WELL Health-Safety Rating certification.

WELL Health-Safety Rating was created based on feedback from the COVID-19 Task Force at the International WELL Building Institute (IWBI).

This certification process entails an evidence-based adoption and monitoring of a plan of measures to assure that the operation and maintenance of the building complies with health and safety standards required by the rating in the current COVID-19 global health crisis and in the long term.

Castellana 81 is the first multi-tenant office building in Spain to hold "Brain-Protected Space" certification. To achieve this certification, staff have completed specialist training on how to detect and act in the event of a person having a stroke in the building.