Collaborative Housing: A tool for social integration and increased sustainability

Collaborative Housing – A European Sustainability Resource

The report “Collaborative Housing: A tool for social integration and increased sustainability” is published by Building Issues (Vol 16, 2022), a peer‑reviewed series supported by the Swedish International Development Cooperation Agency (Sida). The authors – Ivette Arroyo (architect, over 20 years of practice in Ecuador and Sweden), Moohammed Wasim Yahia (architect specialising in urban micro‑climate and space syntax) and Erik Johansson (civil engineer with expertise in climate‑sensitive design) – combine academic research with extensive fieldwork on collaborative housing projects across Sweden, Denmark and the Netherlands.

What Collaborative Housing Is

Collaborative housing (also termed co‑housing, collective housing or bogemenskaper) groups residents in separate apartments while providing shared common spaces (kitchens, dining rooms, gardens). Tenure forms include rental, housing cooperative and cooperative tenancy. In Sweden, about 50 projects exist, with ≈ 50 % rental, 25 % cooperative and 25 % cooperative tenancy. Typical projects host 20–75 apartments, providing 27 % of floor area as common space (e.g., SällBo offers 580 m² indoor common space for 51 apartments).

Key Data and Impact

Sweden faces a housing backlog of 600 000 units; collaborative housing reduces per‑capita energy use and fosters social bridges. SällBo (renovated 2019) houses 72 residents (50 % older adults, 25 % young Swedes, 25 % young refugees) in 51 apartments (36–49 m²) with rent SEK 4 620–5 850. Lagnö Bo (19 apartments, 6 km outside Trosa) provides 645 m² indoor common space and a glazed courtyard of 445 m², achieving ≈ 18.5 m² common space per resident. European examples – Startblok (Amsterdam, 511 units, 0.9 m² common space per resident), Tunet (Roskilde, 62 units, 0.8 m² per resident) and Venligbolig Plus (Frederiksberg, 74 residents, 2 m² per resident) – illustrate varied scales and common‑space ratios.

Design and Co‑Design Practices

All projects employ co‑design, involving future residents in spatial planning, apartment sizing and common‑space allocation. Symmetric access (multiple entry points) is favoured to encourage spontaneous encounters; asymmetric layouts are used for controlled spaces. Indoor common spaces typically include a kitchen, large dining room, flexible multi‑purpose room, laundry, lobby and storage. Outdoor provisions range from communal gardens and roof terraces to glazed courtyards and semi‑covered terraces, enhancing year‑round usability.

Social Integration Outcomes

Resident surveys and interviews reveal that shared cooking, weekly communal meals and joint activities reduce isolation, especially among older adults and refugee groups. In SällBo, residents report increased inter‑generational interaction and mutual support (e.g., young residents assisting elders with digital tasks). Collaborative housing also supports gender‑balanced participation, with both men and women contributing to maintenance and community governance.

Financing and Policy Context

Funding mechanisms include municipal subsidies (e.g., SEK 400 000 start‑allowance for building communities) and national grants from the Swedish National Board of Housing, Building and Planning. Policy recommendations stress the need for flexible tenure mixes, rent‑reduction incentives for self‑managed cleaning, and streamlined loan access for starter groups. The report notes that financing remains a barrier, with many projects relying on public‑private partnerships.

Environmental Benefits

Energy‑saving measures stem from shared utilities, reduced individual appliance loads and the potential for district‑level energy retrofits. Studies cited indicate that collaborative housing can lower per‑household energy consumption by 10–15 % compared with conventional rentals, contributing to Sweden’s climate targets.

Future Directions for Pan‑European Adoption

The authors propose scaling projects to 30–75 apartments for optimal social and economic viability, with larger developments (up to 100 units) suitable where municipal housing companies collaborate with cooperatives. Emphasis is placed on replicable co‑design processes, adaptable common‑space design, and policy frameworks that facilitate mixed‑tenure, affordable, and socially inclusive housing across Europe.