Assemblage studio, founded by architect Claudia Campeau, has completed the Lilac House, a thoughtful renovation of her own Montreal duplex into a single-family home.
The upgraded residence prioritizes adaptability, sustainability, and a deep connection to natural light and the surrounding neighborhood. The project demonstrates how a narrow, constrained urban dwelling can be transformed into a flexible, luminous space capable of evolving with a family's needs over time without requiring major future renovations. A central staircase crowned by a curved skylight channels daylight deep into the home, while a large glazed rear opening connects living areas to a courtyard featuring a mature lilac tree and a pergola inspired by local Portuguese vine supports.
Sustainability is woven throughout the Lilac House — from preserving original brick and timber to crafting new elements from local materials with regional artisans.
Modern Montreal Duplex Houses
Assemblage Studio Has Completed the Lilac House
Trend Themes
1. Adaptive Urban Interiors - Flexible spatial layouts in narrow city homes enable long-lasting residences that can pivot between multi-generational living and compact family needs without full reconstruction.
2. Daylit Vertical Circulation - Central staircases topped with skylights demonstrate how integrated daylight strategies can replace artificial lighting and reshape occupant circulation and comfort patterns.
3. Local Material Preservation - Emphasizing reclaimed brick, timber and regionally crafted elements suggests a move toward supply chains that prioritize heritage materials and skilled local labor over mass-produced finishes.
Industry Implications
1. Residential Architecture - Design practices focused on adaptable, light-filled conversions present opportunities to redefine value in urban housing through longevity and contextual sensitivity.
2. Urban Development - Neighborhood-scale projects that retain mature greenery and human-scaled pergolas show potential for development models that balance density with community character.
3. Building Materials and Prefabrication - Demand for locally sourced, modular components made to complement existing structures indicates a shift toward material systems that simplify retrofits and reduce embodied carbon.