White building with red-tiled roof, pedestrian crossing, and cyclist in motion.

A white building with a red-tiled roof is seen from the street, featuring a pedestrian crossing and a cyclist in motion. The building has a simple facade with a few windows and a green door. Street lamps and a traffic light are visible, along with a railing along the sidewalk.

A two-story white house with a red-tiled roof, chimney, and metal pipe, surrounded by a fence and a street lamp in the foreground.
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Minimalist dining area with a round table, diverse chairs, a potted plant, and a large window.
Interior view of a modern room with a person sitting, a table with fruit, and a plant.
Interior of a house with a wooden staircase and a living area with a person on a sofa.
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Minimalist interior staircase with wooden steps, white walls, and a small window.
Interior view of a minimalist space with a white staircase, wooden floor, and a large mirror reflecting the room.
Interior view of a minimalist room with a wooden chair and bed, white walls, and a window.
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Architectural sketch of a house with a pitched roof, trees, and a sun diagram.

Story

A Harmonious Blend of Past and Present

House CM2 is an architectural gem nestled in the historic fabric of Burgos, Spain. Originally constructed in the 1940s by the Obra Sindical del Hogar, this residence has been meticulously restored and transformed by JEREZ ARQUITECTOS to meet the demands of contemporary living while preserving its rich historical essence.

The exterior of the house remains true to its origins, maintaining the original form, colors, and layout of openings. However, the entire envelope now features a substantial layer of thermal insulation, complemented by a state-of-the-art aerothermal system and underfloor heating, ensuring exceptional energy efficiency.

Inside, the architects have skillfully integrated unique existing elements such as grapevines, a wooden staircase, and the sloping roof of the former attic. These elements are not merely preserved but are celebrated within the new design, creating a dialogue between the past and present. The old grapevines have inspired a new porch that opens onto the southern garden, while a lightweight galvanized steel structure bridges the interior and exterior, regulating light and temperature throughout the year.

A striking white glass covering envelops the original central pinewood staircase, creating a dynamic play of reflections and nuances that change with movement and climatic conditions. This innovative design blurs the boundaries between inside and out, crafting a flexible space that adapts to the needs of its occupants.

The attic floor, previously in poor condition, has been removed to allow for vertical expansion of the first-floor spaces. This intervention transforms the original stairwell into a skylight and a visual connector between different areas of the house, enhancing the sense of openness and connectivity.

  • Preservation of original architectural features with modern enhancements

  • Integration of energy-efficient systems

  • Creation of a porch from existing grapevines

  • Use of galvanized steel to bridge indoor and outdoor spaces

  • Dynamic white glass covering for the staircase

  • Vertical expansion and skylight creation

Detail Information
Location Burgos, Spain
Architects JEREZ ARQUITECTOS
Year 2025
Area 160 m²
Construction Hernaiz Construcciones
Metalwork Escuadra en Hierro
Equipment Richana
Lighting Simon, Faro Barcelona

Technical Summary

Finishes

  • Facade: The facade preserves the original form, colors, and layout of openings.
  • Interior: White glass covering for the central staircase, creating reflections and nuances.

Materials

  • Wood — Flooring and staircase
  • Glass — Windows and doors
  • Steel — Pergola structure

Construction / Systems

  • Thermal Insulation: Significant thickness of thermal insulation for energy efficiency.
  • Heating: Aerothermal system and underfloor heating for energy efficiency.

Products

  • Lighting — Simon, Faro Barcelona (Interior lighting)

Palette / Lighting

  • Colors: White, Green, Teal
  • Lighting: Natural and bright

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