Insights

Sustainable Leadership Callison, now part of CRTKL and Arcadis, demonstrates a strong commitment to sustainable design and urban innovation, positioning it as a leader in eco-friendly architectural solutions ideal for clients prioritizing environmental responsibility.

Integrated Global Resources With CRTKL joining Arcadis, the company offers access to a vast network of global expertise in sustainable design, engineering, and consultancy services, presenting opportunities for clients seeking comprehensive, innovative solutions in urban development.

Market Positioning Operating within the upper mid-market segment with revenues up to $250 million and a substantial client base spanning developers, public entities, and investors, Callison is well-positioned to attract similar businesses looking for trusted design partners.

Growth in Urban Projects Given the company’s heritage of tackling complex urban challenges and its focus on social, digital, and sustainable design, there are significant opportunities to engage with urban developers and municipalities investing in smart, sustainable city infrastructure.

Competitive Advantage Callison’s rich legacy combined with its affiliation with a global leader like Arcadis enhances its reputation and appeal to clients seeking innovative, sustainable, and technologically advanced design solutions, facilitating cross-selling and strategic partnerships.

Callison Tech Stack

Media & News

Callison's Email Address Formats

Callison uses at least 1 format(s):
Callison Email FormatsExamplePercentage
First.Last@callison.comJohn.Doe@callison.com
84%
FLast@callison.comJDoe@callison.com
14%
First.Middle@callison.comJohn.Michael@callison.com
1%
First-Last@callison.comJohn-Doe@callison.com
1%

Frequently Asked Questions

Where is Callison's headquarters located?

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Callison's main headquarters is located at Seattle, Washington 98101 United States. The company has employees across 3 continents, including North AmericaAsiaEurope.

What is Callison's phone number?

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You can contact Callison's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

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

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Callison's official website is callison.com and has social profiles on LinkedIn.

How much revenue does Callison generate?

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As of February 2026, Callison's annual revenue is estimated to be $480K.

What is Callison's SIC code NAICS code?

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Callison's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 54131 - Architectural Services.

How many employees does Callison have currently?

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As of February 2026, Callison has approximately 333 employees across 3 continents, including North AmericaAsiaEurope. Key team members include Chief Designer: Q. L.President Sole-Propietor: T. C.President: K. V.. Explore Callison's employee directory with LeadIQ.

What industry does Callison belong to?

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Callison operates in the Architecture and Planning industry.

What is Callison's email format?

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Callison's email format typically follows the pattern of First.Last@callison.com. Find more Callison email formats with LeadIQ.

When was Callison founded?

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Callison was founded in 1975.

Callison

Architecture and PlanningWashington, United States201-500 Employees

CRTKL has now joined Arcadis, a global leader in the delivery of sustainable design, engineering and consultancy solutions for natural and built assets. Together, the combined strength of CRTKL and Arcadis creates one of the largest architecture practices in the world, offering the best of sustainable, social, and digital design innovation. We are more committed than ever to solving some of the world’s most complex urban challenges and helping to shape the cities and communities of tomorrow. 

Over the last 75 years, we have created some of the world’s most memorable and successful environments for developers, retailers, investors, institutions, and public entities as CRTKL and we will take forward this legacy together with Arcadis.

Section iconCompany Overview

Headquarters
Seattle, Washington 98101 United States
Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
54131 - Architectural Services
Founded
1975
Employees
201-500

Section iconMedia & News

Section iconFunding & Financials

  • $100M$250M

    Callison's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Callison's revenue is estimated to be in the range of $100M$250M

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