Our Story

Established by Dermot Sweeny in 1988, Sweeny &Co Architects Inc. is a multidisciplinary practice whose work centres on driving demand through the creation and execution of highly desirable developments. An award-winning architecture, interior design, and planning practice, our firm is recognized for the design of very successful projects as judged by the developers, owners, occupants, authorities, and communities in which they are situated.
We have aimed to deliver exceptional design ideas that address human needs and environmental stewardship while creating long-term value for our clients. Our portfolio spans nearly three decades, and includes clients such as Microsoft, BMW, Loblaw Companies Limited, TELUS, and the Royal Bank of Canada, Sun Life Financial, as well as multifamily mixed-use, residential, retail, hospitality, urban design, master planning, and commercial projects.


2015 Queen Richmond Centre West

The Queen Richmond Centre West offers Toronto an unprecedented 17-storey High-performance Workplace constructed above two historic buildings. With an innovative structural system, this 302,000 s.f. project maximizes building efficiencies in its new state-of-the-art office component and features a retail complex at grade.

2014 Waterfront Innovation Centre

Commencing the work and collaboration with Waterfront Toronto and Menkes Developments to design and build the Waterfront Innovation Centre in Toronto—the first facility in Canada that is intended to support and truly enhance the success of the local and global tech community. The design of the Waterfront Innovation Centre will provide a High-performance facility that supports both the tech industry and the greater community, strengthens the public realm, and creates a prominent and activated gateway to Sugar Beach and the waterfront promenade.

2013 Spectrum Square

Spectrum Square begins construction, combining the concepts of “office park” and the “restaurant campus” to offer an unprecedented mixed-use suburban development.

2012 BMW Group Canada Head Office

BMW Group Canada demonstrates a true integration of design and technology in their new turn-key headquarters north of Toronto, providing a state-of-the-art facility that increases human comfort, future flexibility, green values, brand enhancement, and reduces churn costs.

2011 Sun Life Tower + Harbour Plaza

The design for Sun Life Tower and Harbour Plaza delivers a new benchmark for mixed-use developments spanning a full city block in downtown Toronto.

2010 Albany Medical Clinic

The new building and interiors for Albany Medical Clinic provides a comprehensive medical facility that fosters professional synergies and encourages innovative research, implementing the latest in ergonomic and accessible design.

2009 RBC Centre

RBC Centre Tower in Toronto becomes the most energy-efficient tower in Toronto—an office tower operating at less than 4 watts of total power usage per square feet. RBC Centre Tower in Toronto becomes the most energy-efficient tower in Toronto—an office tower operating at less than 4 watts of total power usage per square feet. This development demonstrates a workplace that is not only an elegant addition to the Toronto cityscape, but one that exceeds its original vision of sustainable workplaces designed for human comfort.

2008 Prada on Bloor

Working with Prada’s lead designer, Studio Baciocchi from Italy, we complete the renovations and expansion of Prada’s first boutique in Canada.

2007 TELUS House Toronto

Representing both the lead tenant TELUS and the developer Menkes, we embark on a collaborative project with the entire team to turn a typical design for a spec tower at 25 York into to the first LEED Gold multi-tenant High-performance Workplace tower with: under-floor air; fully exposed and carefully designed concrete slab ceilings, columns, and capitals. The building becomes the first to embrace the “all off” philosophy with occupancy sensors, indirect lighting and daylight harvesting systems, a 54% reduction in energy consumption when compared to a standard building and was the first LEED Platinum EB: O&M office tower.

2004 Loblaw Co. Ltd. Headquarters

Loblaw Companies Ltd. stops construction and retains Sweeny&Co to redesign their new national Headquarters in Brampton. The new design increases building efficiency by almost 25%, increases amenity area by more than 50%, reduces energy consumption by close to
50%, and is constructed and fully fitted-out for less than the majority of suburban standard office buildings.

2001 Microsoft Canada Headquarters

Microsoft Canada Headquarters is the first office building with a 50% reduction in power consumption, as well as features such as a split, offset cores, pressurized plenum HVAC in floor, plug ‘n play voice/data/power distribution, and fully automated daylight harvesting.

1999 180 Duncan Mill Road

180 Duncan Mill becomes the first under-floor air multi-tenant office building to operate with full indirect lighting, operable windows, plug-and-play voice, data, and power cabling and flush in-floor perimeter heating.

1998 The Radius and The Maxus

The Radius (Yonge and Merton Streets) and The Maxus (Bay Street and Cumberland Avenue) deliver a new benchmark for future mixed-use, residential developments with a better living environment. Amongst the firsts in Toronto, both of these midrise residential buildings integrate extensive retail spaces in the base of the building. They also offer more natural light and fresh air, generous private outdoor amenities, and greater flexibility for their residents.

1997 Sterling Tower

The historic Sterling Tower is preserved and revived through an innovative design approach that accommodates a tech-company as a tenant. The renovations include architectural features such as new doubled-glazed low E windows, new fire panel, updated elevator cabs and closures, upgraded lobby, upgraded electrical components, and sand-blasting three sides of the building.

1996 468 Wellington Street West

We create co-tenancy to fund a restoration and conversion of the historic 468 Wellington Street West. The renovations include restoration of the brick bearing walls, acoustical engineering of floors between units, a new freight elevator and a second stairwell. Upon completion, our studio moved into the second floor of the building.

1994 Bell Advantage Business Centre

Amongst the fast-food stands and bookstores of the BCE Place, the Bell Advantage Business Centre retail store stands apart—a seamless invention of elegance and marketing, with a dramatic intersection of textures and angles.

1989 The Derby

The Derby, initiated by Dermot Sweeny while at renowned Architect Ron Thom’s Toronto office, is brought to a successful conclusion by Dermot Sweeny Architects. Twenty-six innovative mezzanine lofts (long before “loft” became the marketing buzz-word it is today) and the commercial space at street level fit in well with its industrial context. The Derby becomes the first re-zoning for a Residential use, setting a precedent that was a major contributing factor in creating the Kings–a district-wide bylaw that addressed the repurposing of unutilized industrial buildings in Toronto’s downtown area.



Canadian Urban Institute – Best Overall Project (Building Scale) — Queen Richmond Centre West
R+D Award (citation) — The Journal of the AIA, ARCHITECT Magazine — Queen Richmond Centre West
Award of Excellence: Engineering — CISC Ontario Steel Design Awards — Queen Richmond Centre West

NAIOP Real Estate Excellence (REX) Awards: Best Office Development of the Year — AeroCentre V
IES Illumination Award — TELUS Tower at 25 York
BOMA TOBY Awards: Suburban Office Park — AeroCentre V
BOMA Earth Awards: Office Building — TELUS Tower at 25 York
PUG Awards: People’s Choice for Residential Architecture — 83 Redpath

Toronto Urban Design Awards — TELUS Tower at 25 York
Toronto Urban Design Awards — RBC Centre
SAB Award — RBC Centre
OAA Award: Design Excellence — TELUS Tower at 25 York
NAIOP Real Estate Excellence (REX) Awards: Green Award of the Year — AeroCentre V

AIA New York State Citations — RBC Centre
Mississauga Urban Design Award — AeroCentre V
Ontario Building Envelope Council Award of Distinction for Design — Loblaw Companies Limited head office
Ontario Concrete Award, Structural Design Innovation Award Trophy — AeroCentre V
Design Exchange Award — TELUS Tower at 25 York
The Chicago Atheneum Award: Green Good Design — RBC Centre
Pug Award: Honourable Mention — RBC Centre
NAIOP Real Estate Excellence (REX) Awards: Green Award — RBC Centre
NAIOP Real Estate Excellence (REX) Awards: Best Office Building — TELUS Tower at 25 York

Gold Design Exchange Award — RBC Centre
Toronto Urban Design Awards: Mid-Rise Developments, Honourable Mention — 294 Richmond Street East

NAIOP Real Estate Excellence (REX) Awards: Office Lease of the Year — TELUS Tower at 25 York
Brampton Urban Design Awards: Award of Excellence — Loblaw Companies Limited head office

NAIOP REX Awards: Finalist for 2006 Office Lease of the Year — RBC Tower

Mississauga Urban Design Awards: Award of Merit — Microsoft Canada

Facility Newsmaker Award: Facility Space Planning/Design Excellence — Microsoft Canada
Toronto Architecture & Urban Design Awards: Honourable Mention — Queen Richmond Centre

NAIOP REX Awards: Finalist for the Office Project of the Year — Microsoft Canada
Heritage Toronto: Award of Merit, Restoration and Renovation — Sterling Tower, 372 Bay Street

ERA Awards: Excellence in Retailing, New Retail Concept Award — Bell Advantage Business Centre
ERA Awards: Excellence in Retailing, New Retail Concept Award, Large Category — Benjamin Moore