Architecture for Community-Based Ageing—A Shape Grammar for Transforming Typical Single-Family Houses into Older People’s Cohousing in Slovenia

Abstract

In Slovenia, the existing organised housing infrastructure for people over 65 years of age is insufficient and lacks diversification. Older people are often homeowners, many of whom dwell in large, underused single-family houses that require adaptations. Some have the potential to be transformed into small co-housing communities of 3–6 older people. The houses in question are mostly pattern-book houses of various types, built in the first decades after WWII. To approach the problem of converting this mass resource while providing enough flexibility for individual customisation, a shape grammar was proposed, with the intension of expanding the range of design variations for the transformation of single-family houses and presenting them to both users and architects for further assessment. The shape grammar was inferred based on a corpus of case studies developed by architecture students across two weeklong workshops. Three general strategies emerged—splitting the house vertically (according to sleeping/private and living/communal functions), horizontally, or with the maximum number of sleeping/private spaces. Essential spaces were catalogued to determine the conditions and requirements for assigning every transformation rule. The result was a simple, yet versatile composition generator. Through the development of a user-friendly interface, this resource could be used to empower potential inhabitants in the transformation design process.