Restoration of a residential building in Calle Montalbán

  • Building Type : Collective housing < 50m
  • Construction Year : 2020
  • Delivery year : 2020
  • Address 1 - street : Montalbán 11 28001 MADRID, España
  • Climate zone : [Csa] Interior Mediterranean - Mild with dry, hot summer.

  • Net Floor Area : 3 102 m2
  • Construction/refurbishment cost : 8 400 000 €

Certifications :

  • Primary energy need :
    17 kWhpe/m2.year
    (Calculation method : )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

The comprehensive energy rehabilitation of the residential building on Calle Montalbán 11 in Madrid is a unique project in our country destined to become part of the artistic heritage of the capital thanks to five key points:

  • the historical value of the property, restored and preserved in the intervention
  • the unbeatable location next to the Retiro and the cultural epicenter of the city
  • its careful interior design in homes and common spaces
  • its respect for the environment and sustainability accredited in a BREEAM “Very Good” certificate and an A energy rating
  • and, of course, the intervention of the artist Carlos Cruz-Diez with a Chromatic Setting in three stages.

Data reliability

3rd part certified

Photo credit

José Manuel Gutiérrez for In Situ Art Projects


    Fernández Molina Obras y Servicios SL


Construction Manager

    Fernández Molina Obras y Servicios SL




    Carlos Miguel González Weil


    Architect author of the project


    Santiago Bouzada Biurrun




    José Luis García Rubio Jaquotot




    Marta Aranguez González




    Italinmuebles SL


    Real estate promotion according to sustainable criteria

    Facility manager

    JLL España


    Project Management

    Construction company

    Valladares Ingeniería SL


    Consulting and calculation of structures and facilities. Work monitoring.

    Certification company

    Valladares Ingeniería SL


    BREEAM Consulting


    Sánchez + Sánchez (Totón Sánchez)


    Interior design


    Gunni & Trentino


    Supply of finishing products


    Molior Construcciones y Urbanismo SL


    Architecture Studio - Project Development


    InSitu Art Projects


    Art Gallery - Works by Carlos Cruz-Diez in the building


    Años Luz Iluminación de Vanguardia SL


    Lighting product supply


    Bang & Olufsen Retiro


    Supply of home automation products


    Geoter Geothermal Energy SL


    Geothermal probes

    Environmental consultancy

    Artur Miró _ Develop Index Ambiental

    Passatge dels Escudellers, 5, 08002 Barcelona

    Ecology consulting

    Facility manager

    Miguel Ángel Madrid Soto


    Sach - Sistemas de aspiración centralizada

    +34 91 633 34 93


    Tierra Ingeniería y paisajismo S.L.

    +34 91 535 05 47

Contracting method

General Contractor

Owner approach of sustainability

The promoter, Italinmubles, has always shown an interest in sustainability, from the beginning of the project to the end of the work. Low consumption, the search for well-served locations in terms of services, active and passive measures, respectful materials, etc ... have always been sought and validated by the developer and the architecture studio to achieve an optimal and sustainable result. .

Architectural description

The building, built in the Barrio de Los Jerónimos in 1916, was expanded by three floors in the postwar period. Thus, the ensemble coincides with structures made of wood, brick, steel and cast iron, and reinforced concrete. Now we have completed its second major reform, respecting the main façade and the central patio, changing the location of the main staircase (recovering and restoring its most valuable pieces), and creating, through a complete removal, two new basements that include an automatized parking for 32 spaces (five electric). Nine homes, storage rooms, indoor pool, gym, multipurpose room, sauna, hammam, and common patios vegetated with native species complete the uses of its more than 4,600m2 built (3,300m2 SR and 1,300m2 BR). Everything is worked with a careful interior design with materials of the highest quality and proximity.

The sustainability of the intervention is endorsed by the BREEAM Very Good certification, one of the first qualifications of its kind in residential rehabilitation in Spain. Product EPDs, wood provenance certificates, VOC emission certifications, lighting efficiency and many other aspects related to sustainability have been carefully required and reviewed by designers and certifiers. The efficient use of water, with the recycling of gray water for the irrigation of common areas, and the use of natural lighting, with fixed mirrors in small patios that manage to make sunlight reach the lowest plants, are completed with more 70m2 of green areas for common use, a luxury in the center of Madrid. Regarding energy efficiency, a large number of passive measures have been used (large insulation, energy-saving glazing, low transmittance carpentry, ...) and among the active measures implemented, the use of geothermal combined with low-temperature terminals stands out. and ventilation systems with heat recovery.

The building is completed with something unique in our country: a work of art specifically designed by Carlos Cruz-Diez in three stages. The first is the mural integrated into the Induction Chromatique à Double Fréquence hall, the second is a vibrant Chromointerférence that can be seen from the elevator car; and the last stage is the Transchromie that are located inside the houses.

Energy consumption

  • 17,00 kWhpe/m2.year
  • 61,00 kWhpe/m2.year
  • 8,00 kWhfe/m2.year
    Heating, DHW, cooling 32%
    Ventilation 8%
    Illumination 5%
    Robotized Garage 21%
    Common services 18%
    Household appliances and other 16%

    All energy consumption for air conditioning and DHW is electric (geothermal pump plus aerothermal pump)

  • 262,00 kWhpe/m2.year


    • Heat pump
    • Geothermal heat pump
    • Low temperature floor heating
    • Fan coil
    • Heat pump
    • Other hot water system
    • Reversible heat pump
    • Geothermal heat pump
    • Fan coil
    • Floor cooling
    • Double flow
    • Heat pump (geothermal)
  • 5,45 %
  • It is a mixed geothermal system with probes in the field + aerothermal both for the generation of heating / cooling and for DHW.

    There is no production of renewable energy but a geothermal installation that saves electricity consumption. The production has been calculated based on the electrical savings: over the total of the building, 43% of the production for cooling, heating, and DHW is produced with the geothermal machine.

    Solar mirrors that guarantee natural lighting in patios, saving electricity consumption for artificial lighting.

Health & Comfort

    Luminaires that have LED lamps have been selected to reduce the risk of health problems related to the flickering of fluorescent lighting. User controls have been provided to all dwellings that allow independent adjustment of the temperature of the heating and cooling systems within the building. The improvement of the quality of life of the occupants has been promoted by providing an outdoor space for their use and which provides privacy.


    Siber DF SKY

    Siber Ventilación


    Génie climatique, électricité / Ventilation, rafraîchissement

    Roof system for dual flow ventilation.

    It is a system that we have worked with on several occasions. Installation own reviews. No problem.

    Deplosun Patios



    Génie climatique, électricité / Eclairage

    Fixed mirror system to be installed on the façade to transfer sunlight to the back of the patios.

    Technical assistance for the installation of the elements in patios. Increase natural light inside narrow patios.


    ACTIS Aislamienro


    Second œuvre / Cloisons, isolation

    Multi-layer cellular insulation

    Requires training for installers, then easy to install.

    Torinco wooden windows

    Torinco SL


    Second œuvre / Menuiseries extérieures

    Wooden windows

    High quality windows with their own installers; wood certifications.

    Slim Line 38 / Hi-Finity

    Reynaers Aluminium


    Second œuvre / Menuiseries extérieures

    Anodized aluminum windows and doors.

    Assembled and manufactured by Faycer Systems


    Baupanel Systems SL


    Gros œuvre / Structure, maçonnerie, façade

    Steel mesh system with built-in insulation to fix and project facades.

    Wood interior carpentry

    Maderas Hernando


    Second œuvre / Menuiseries intérieures, serrurerie, quincaillerie 

    All kinds of interior carpentry and restoration of the wooden elements with patrimonial protection: floors, doors, steps, etc ...

    Own assemblers. Custom manufacturing.

Construction and exploitation costs

  • 9 350 000

Urban environment

The building is inserted in a completely consolidated urban environment and with all the services: health, educational, cultural, waste collection, water and sanitation, public transport and other forms of movement such as bike & carsharing, etc.

Land plot area

522,00 m2

Built-up area

100,00 %

Green space


Parking spaces

Efficient automatized parking installed on two levels with a total of 32 spaces, 5 of them prepared for recharging electric vehicles.

Building Environmental Quality

  • indoor air quality and health
  • biodiversity
  • works (including waste management)
  • acoustics
  • comfort (visual, olfactive, thermal)
  • waste management (related to activity)
  • water management
  • energy efficiency
  • renewable energies
  • building process
  • products and materials

Contest categories

Energy & Temperate Climates

Energy & Temperate Climates

Health & Comfort

Health & Comfort

Green Solutions Awards 2020-2021


Author of the page

  • Santiago Bouzada Biurrun

    Senior Architect

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    Green Solutions Awards 2020-2021