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Woonpioniers' CoHouse: Two Dutch Homes Interlock Like Tetris

architecture-design · 2026-08-16

Woonpioniers, a Dutch architectural firm, has finalized CoHouse, a 237-square-metre co-housing initiative located in Cothen, Utrecht. This project consists of two interconnected residences housed within a single gabled structure, resembling "a game of Tetris," in compliance with local regulations for a unified building volume. Leen Bogerd, a partner at the studio, explained that the homes were strategically rotated to maximize sunlight, privacy, and views. Each dwelling is tailored with sustainable features, including a timber framework, cross-laminated timber flooring, wood-fibre insulation, and a bio-based acoustic floor. Energy efficiency is bolstered by ground-source heat pumps, heat-recovery ventilation, and a solar roof. The interiors highlight exposed timber, grey flooring, and neutral shades, complemented by shared entryways and open-plan areas.

Key facts

  • Woonpioniers completed CoHouse in Cothen, Utrecht, Netherlands.
  • CoHouse is a 237-square-metre co-housing project with two interlocking homes.
  • The homes are designed for two families within a single gabled volume.
  • The design is described as 'a game of Tetris'.
  • The municipality required both homes to fit within a single building volume.
  • The homes use a low-carbon timber frame, cross-laminated timber floors, and wood-fibre insulation.
  • Energy features include ground-source heat pumps, heat-recovery ventilation, and a solar roof.
  • Each home has four bedrooms and a bathroom on the upper floor.
  • The project was designed by Woonpioniers, with partner Leen Bogerd commenting.
  • Photography is courtesy of Woonpioniers.

Entities

Artists

  • Leen Bogerd

Institutions

  • Woonpioniers
  • Dezeen

Locations

  • Cothen
  • Utrecht
  • Netherlands
  • Amsterdam

Sources