Regrettably, the urban redevelopment of Madrid’s avenue, Paseo de la Castellana, resulted in the loss of countless mansions, many of them unique. This mansion from the end of the Nineteenth Century, was one of the few preserved, and was part of the expansion of Madrid. Kalam’s team is working on the conservation and recovery of the envelope. The tower’s slate roof was removed to proceed with the replacement of its wood framing. The roof was later rebuilt to its original state, including the replacement of the apron flashings. The scope of work on its three stucco facades included cleaning and restoring decorative elements, cornices, balustrades and window surrounds, scraping and priming balcony railings and applying silicate coatings on vertical surfaces. The building cornices, severely deteriorated due to rust, were reinforced with pins and mortar patches. Work on the rear precast concrete facade was completed with overall cleaning and water repellent coatings.