Casa Decor will open its doors again from 9 April to 24 May 2026 in the palace-house at 11, Calle San Agustín to reveal the latest tendencies in interior design, architecture, design and art. This 61st edition will be visiting the heart of the Literary Quarter for the first time, on the corner of Calle San Agustín and Calle Cervantes.
In 2026, Casa Decor will be visiting the Literary Quarter, whose boundaries have already been visited in previous editions, namely Calle Atocha 34 (2016 edition) and Plaza de Canalejas 3 (2021 edition), but it will now be in the heart of a historic, literary and artistic neighbourhood, where great figures from the Spanish Golden Age lived.
Built between 1892 and 1895 by the architect Enrique Sánchez y Rodríguez, as the residence of Alonso Álvarez de Toledo y Caro, Marquis of Vélez and Count of Niebla, this palace-house at 11, Calle San Agustín is one of the few examples of noble architecture that still remains in the area.
Following the demolition of the former San Agustín convent and the Medinaceli Palace – where the Palace Hotel is located today – the widowed Duchess of Medinaceli sold the corner plot to the Marquis, who commissioned the construction of his family residence in the same year, an urban palace with a basement, three floors and a tower on the corner. The palace façade is in a sober classicist style with elegant and monumental interiors, especially on the ground floor and first floor.
In 1926, the palace passed into the hands of the Congregation of the Handmaids of the Sacred Heart of Jesus, for use as a convent and school. It was the architect, Joaquín Sainz de los Terreros, who was responsible for the refurbishment of the building on several occasions. The construction of the chapel in the palace's former coach houses, dates back to this first intervention as its sculptural decoration made it the most relevant space for this purpose. The entrance was also modified to accommodate the convent's gatehouse and the service staircase was built.
Around 1941, a fourth floor was added to house the bedrooms. For this extension, which affected the façade, Sainz de los Terreros opted for a style that continued the classical principles established in Enrique Sánchez's project.
From then on, the building has undergone various renovations until the last one, in 2009, which resulted in the existing constructed surface area: 3,500 m2. Despite the change in the building's activity, from a palace to a convent, stately remains are still preserved on the ground and main floors, such as the beautiful entrance to the vestibule, with white marble floors, stained glass windows by the House of Maumejean, elaborate mouldings and cornices and a monumental semicircular staircase.
The building is jointly owned by the Sircle Collection and Take Point, who will both lead its renovation to create the luxury Sir Agustin Hotel. The project includes 33 rooms, a restaurant and The Cover, the Sircle Collection’s innovative private club concept.
Casa Decor is the sector’s largest and most important exhibition in Spain and Europe, due to its magnitude, duration and media relevance. It is a communication platform that brings together the three main vertices of the decoration sector: designers, commercial brands and the general public. This event was first held in 1992 with the participation of a group of 43 decorators who were responsible for refurbishing a former convent in Madrid.
Over six weeks, this initiative opens an iconic and unique building in Madrid to the public, housing around fifty spaces decorated by both established professionals and promising young interior designers. Each edition brings together more than 200 exhibitors, including professionals and companies, in order to promote their work, products or services on this complete platform. It is a great participatory project that fosters and raises awareness of the interior design sector, consumer, luxury and lifestyle brands.
Casa Decor 2025
A total of 47,237 people visited Casa Decor 2025, which included 237 participants who helped to transform the building at 33, Calle Sagasta into spaces full of creativity, innovation and tendencies: 144 companies (47% foreign), 57 interior decoration, architecture, design and landscaping studios, and 36 artists and artisans.
Image Credits: © Nacho Uribesalazar
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