Adaptive Reuse Architecture Projects: Transforming Spaces with Carles House
Explore how adaptive reuse architecture transforms old structures into sustainable, functional spaces, with Carles House as a prime example.
Adaptive Reuse Architecture
Adaptive reuse architecture is an innovative approach to sustainable design, where existing structures are repurposed for new uses instead of being demolished. This process breathes new life into buildings, preserving their historical essence while addressing modern functional needs. One shining example is Carles House, a former shop in Barcelona's Sants district, transformed into a cozy, energy-efficient home by OBO Estudi.
In this article, we’ll explore how adaptive reuse creates functional, aesthetically pleasing spaces while contributing to environmental sustainability.

What is Adaptive Reuse in Architecture?
Adaptive reuse involves reimagining and retrofitting old structures to suit contemporary needs. From warehouses becoming vibrant coworking spaces to industrial buildings transformed into residential lofts, this practice integrates history with innovation.
Key benefits include:
- Preserving cultural heritage: Retains architectural features unique to the building's era.
- Sustainability: Minimizes waste and reduces the carbon footprint by reusing materials.
- Cost-efficiency: Often less expensive than new construction, especially in urban areas.


Case Study: Carles House by OBO Estudi
The Original Structure
Carles House was initially a shop with a ground floor, mezzanine, and three structural centrelines supporting four upper levels. Encapsulated between a bustling street and a serene courtyard, the space required significant reconfiguration to transition into a home.
The Design Strategy
The renovation by OBO Estudi focused on three main goals:
- Maximizing Volume: Removing false ceilings and unnecessary cladding exposed the original ceramic walls and wooden beams, creating a sense of spaciousness.
- Reclaiming Pre-Existing Materials: Restoring historical elements, such as ceramic walls, to enhance aesthetic and functional value.
- Sustainability: Insulating the living spaces and integrating passive heating and cooling strategies.

Spatial Configuration
The home design creates seamless transitions between spaces:
- Entrance and Privacy: The new ventilated gate provides both light and airflow, maintaining privacy.
- Living Areas: The wooden box structure contains bedrooms, bathrooms, and a mezzanine, connecting the kitchen and dining area to a double-height living space.
- Courtyard Connection: A gallery leads to the courtyard, blending interior and exterior spaces.


Sustainability Features in Adaptive Reuse
Thermal Efficiency
Carles House leverages passive design for climate control:
- Winter: A south-facing courtyard gallery captures sunlight, providing natural warmth.
- Summer: Deciduous plants shade the courtyard, enabling cooling and ventilation.

Material Reuse and Reduction
The project reused existing materials like ceramic walls and exposed beams, reducing construction waste and honoring the building’s history.
Energy-Efficient Insulation
A highly insulated wooden box minimizes heat loss, ensuring comfort year-round.

Key Design Features of Carles House
Interior Design
The mix of raw, industrial materials with modern wooden structures creates a warm yet contemporary aesthetic. Key elements include:
- Exposed beams and brickwork for a historical touch.
- Minimalist furniture integrated into raised floor platforms for a functional, streamlined look.

Functional Adaptations
The mezzanine space, accessible via a staircase suspended from a metal beam, offers flexibility for work, play, or storage.
Why Adaptive Reuse Architecture Projects Matter
Adaptive reuse not only saves buildings from demolition but also contributes to sustainable urban development. These projects balance history with modernity, offering solutions to overconsumption and urban density.
Carles House exemplifies how creative design and thoughtful planning can turn an old, underutilized space into a vibrant, functional home.


Transforming Spaces Through Adaptive Reuse
Adaptive reuse architecture projects like Carles House by OBO Estudi showcase the potential of sustainable design. By blending historical integrity with modern functionality, architects can create spaces that are not only beautiful but also environmentally conscious.
Whether you're a homeowner, architect, or design enthusiast, exploring adaptive reuse projects is a step toward building a more sustainable future.

