Insights

Sustainability leadership mcCallumSather positions sustainability and environmental integration as core to its practice, signaling potential for partnerships on high-performance, green building projects and renovation work that require integrated architectural and interior design services with sustainable material and system selection.

Award-winning credibility Recent awards and recognitions across design excellence, whole-building holistic design, and social good highlight the firm’s market credibility and proven track record, making it a compelling partner for clients seeking reputable firms with demonstrated project success.

Strategic partnerships Formalizing a strategic partnership with Watson MacEwen Teramura Architects suggests openness to collaboration on larger, multi-disciplinary projects, creating selling points for joint pursuits and expanded capabilities in architecture and engineering.

Global and local relevance Operating as a Canadian-owned, multi-disciplinary firm with a substantial project portfolio and international award exposure, mcCallumSather can align with clients seeking both local expertise and design excellence with global recognition.

Scale and capability fit Revenue range and team size indicate mid-market capabilities that align with mid-to-large-scale renovations and mixed-use or institutional projects, suggesting opportunities in design-build collaborations, integrated engineering, and interior design packages for complex spaces.

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mcCallumSather Tech Stack

mcCallumSather uses 8 technology products and services including AutoCAD, WordPress, Sketch, and more. Explore mcCallumSather's tech stack below.

Media & News

mcCallumSather's Email Address Formats

mcCallumSather uses at least 2 email formats:
mcCallumSather Email FormatsExamplePercentage
FirstL@mccallumsather.comJohnD@mccallumsather.com
90%
Last@mccallumsather.comDoe@mccallumsather.com
10%

Frequently Asked Questions

What is mcCallumSather's official website and social media links?

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mcCallumSather's official website is mccallumsather.com and has social profiles on LinkedIn.

How much revenue does mcCallumSather generate?

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As of September 2026, mcCallumSather's annual revenue is estimated to be $250M - $500M.

What is mcCallumSather's NAICS code?

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mcCallumSather's NAICS code is 54131 - Architectural Services.

How many employees does mcCallumSather have currently?

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As of September 2026, mcCallumSather has approximately 83 employees across 1 continents, including North America. Key team members include Ceo: J. M., Cfo: H. B. G. and Chief Operating Officer: M. A. Explore mcCallumSather's employee directory with LeadIQ.

What industry does mcCallumSather belong to?

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mcCallumSather operates in the Architecture and Planning industry.

What technology does mcCallumSather use?

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mcCallumSather's tech stack includes AutoCAD, WordPress, Sketch, Bluebeam, Shopify, Microsoft 365, Piwik and Vimeo.

What is mcCallumSather's email format?

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mcCallumSather's email format typically follows the pattern of FirstL@mccallumsather.com. Find more mcCallumSather email formats with LeadIQ.

When was mcCallumSather founded?

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mcCallumSather was founded in 1996.
mcCallumSather logo

mcCallumSather

Architecture and PlanningCanada51-200 Employees

mcCallumSather is a Canadian-owned, multi-disciplinary firm based in Hamilton, Ontario, offering architecture, mechanical engineering, and interior design. The firm emphasizes sustainable and intelligent design, guiding decisions on siting, orientation, materials, and systems to achieve a lasting positive impact. Its collaborative approach aims to empower teams and integrate with the construction industry to deliver creative, durable solutions.
The practice serves clients seeking integrated design services for built environments, prioritizing design excellence and sustainability delivered through a collaborative process. In 2024, mcCallumSather expanded with a new office in Toronto, reflecting growth beyond its Hamilton base. The firm has earned industry recognition for sustainable projects, including the 2025 Third Award for Sustainable Project of the Year (Built) at the Rethinking The Future Awards for 1620 Main St. E.

Section iconCompany Overview

NAICS Code
54131 - Architectural Services
Founded
1996
Employees
51-200

Section iconFunding & Financials

  • $250M - $500M

    mcCallumSather's revenue is estimated to be in the range of $250M - $500M

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