40 King Street, Oshawa ON

Location

Oshawa, Ontario

8

storey office building

119

residential units + ground floor commercial

Typology

Adaptive Reuse / Mixed-Use / Intensification

Scope

Full architectural design + planning strategy

Status

Construction ongoing

The development introduces 119 high-quality residential units, activated by ground-floor commercial uses and supported by a fully optimized basement plan, delivering both urban vitality and long-term asset value. This project demonstrates how strategic design thinking can unlock latent potential within aging building stock—turning obsolete office space into a high-performing residential asset aligned with evolving market demands.

Metric	Before	After
Use	Office	Residential + Commercial
Units	N/A	119 Units
Revenue Model	Single income stream	Multi-stream (residential + retail)
Occupancy	Unstable	High demand residential
Asset Value	Underperforming	Significantly enhanced
Environmental Impact	High (if demolished)	Low (adaptive reuse)

To redefine an outdated office structure into a contemporary urban living environment, maximizing density while enhancing livability, walkability, and economic return—without the environmental and financial costs of demolition and new construction.

Adaptive Reuse Strategy
Reimagined the existing structural framework to accommodate efficient residential layouts, minimizing structural intervention while maximizing yield.
Residential Intensification
Increased functional density to 119 units through intelligent planning, unit stacking, and circulation optimization.
Mixed-Use Activation
Introduced commercial uses at grade to animate the streetscape and create a dynamic interface with the public realm.
Basement Optimization
Reconfigured basement space for essential building services, storage, and operational efficiency—enhancing overall project feasibility.
Modern Living Standards
Designed units to meet contemporary expectations for light, ventilation, and spatial quality within an existing envelope.

Navigated zoning and building code complexities associated with change-of-use from commercial to residential
Integrated life safety upgrades, vertical circulation improvements, and servicing strategies
Delivered a design that balances code compliance, cost efficiency, and architectural quality

Significant embodied carbon savings by retaining the existing structure
Reduced construction waste and accelerated project timelines
Aligned with global sustainability goals through adaptive reuse rather than demolition

This project exemplifies a highly scalable model for developers across Canada, the UK, and the US:

Converts underperforming office assets into high-demand residential inventory
Minimizes capital expenditure compared to ground-up construction
Accelerates approvals and delivery timelines
Unlocks hidden value in secondary and emerging urban markets

As cities across North America and Europe face surplus office space and housing shortages, this project stands as a blueprint for intelligent urban transformation—demonstrating how design-led thinking can bridge market gaps while delivering strong financial and social outcomes.

“This project demonstrates how precision-led adaptive reuse can transform obsolete office buildings into high-performing residential assets—unlocking density, sustainability, and long-term value at scale.”