Insights

Strategic Merger Leffler Group has merged with Salas O'Brien, expanding geographic reach and capabilities in the Rocky Mountain Region and western United States, signaling potential cross-sell opportunities to Salas O'Brien clients and access to larger project pipelines.

Diverse Markets Experience across office/retail, parking, high-rise, residential, hospitality, education, healthcare, blast, golf/resort and more suggests opportunities to target multi-market clients with integrated structural engineering needs and repeat design services.

LEED Expertise Proven LEED design capability, including Platinum and Gold projects, positions the firm to pursue sustainability-led initiatives with clients seeking green building certifications and energy-efficient infrastructure.

Tech Enabled Adoption of REVIT integrated with RAM Structure and a modern tech stack indicates strong collaboration and efficiency; potential to upsell advanced modeling, BIM coordination, and digital twin services to clients with complex scopes.

Recognition & Growth Recent industry recognition and ongoing partnerships (and proximity to Salas O’Brien’s broader awards, Siemens alliance, and acquisitions) suggest momentum and credibility that can support new business development, joint bids, and expanded service offerings.

Similar companies to The Leffler Group

The Leffler Group Tech Stack

The Leffler Group uses 8 technology products and services including Microsoft Power Automate, SketchUp, SOLIDWORKS, and more. Explore The Leffler Group's tech stack below.

Media & News

The Leffler Group's Email Address Formats

The Leffler Group uses at least 4 email formats:
The Leffler Group Email FormatsExamplePercentage
FLast@thelefflergroup.comJDoe@thelefflergroup.com
100%
First.Last@salasobrien.comJohn.Doe@salasobrien.com
96%
First@salasobrien.comJohn@salasobrien.com
2%
First.Middle@salasobrien.comJohn.Michael@salasobrien.com
2%

Frequently Asked Questions

What is The Leffler Group's phone number?

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You can contact The Leffler Group'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 The Leffler Group's official website and social media links?

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The Leffler Group's official website is salasobrien.com and has social profiles on LinkedIn.

How much revenue does The Leffler Group generate?

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As of September 2026, The Leffler Group's annual revenue is estimated to be $1M - $10M.

What is The Leffler Group's SIC code and NAICS code?

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The Leffler Group's SIC code is 8711 - Engineering Services and NAICS code is 237 - Heavy and Civil Engineering Construction.

How many employees does The Leffler Group have currently?

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As of September 2026, The Leffler Group has approximately 11 employees across 2 continents, including North America and Europe. Key team members include Chief Executive Officer: P. O. B., Managing Director: G. O. and Owner: T. L. Explore The Leffler Group's employee directory with LeadIQ.

What industry does The Leffler Group belong to?

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The Leffler Group operates in the Civil Engineering industry.

What technology does The Leffler Group use?

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The Leffler Group's tech stack includes Microsoft Power Automate, SketchUp, SOLIDWORKS, WordPress, Hootsuite, Marketo, Trello and Miro.

What is The Leffler Group's email format?

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The Leffler Group's email format typically follows the pattern of FLast@thelefflergroup.com. Find more The Leffler Group email formats with LeadIQ.

When was The Leffler Group founded?

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The Leffler Group was founded in 2001.
The Leffler Group logo

The Leffler Group

Civil EngineeringColorado, United States11-50 Employees

The Leffler Group, a civil engineering firm based in Lakewood, Colorado, operates in the design and construction realms, offering structural engineering services to projects across the Rocky Mountain Region and the western United States. Following its merger with Salas O'Brien, the firm emphasizes a close, principal-led project approach, delivering personalized management, design, coordination, and administration to address the needs of diverse developments in sectors such as office, retail, high-rise, residential, hospitality, education, healthcare, and more. The organization highlights its ability to provide creative structural solutions, support for LEED design, and up-to-date modeling and analysis, aiming to meet demanding schedules and complex conditions. 

As part of the broader Salas O'Brien network, the firm positions itself within a nationwide, multidisciplinary engineering and facility planning landscape, leveraging a local footprint and expanded capabilities to serve clients with integrated design and engineering needs. The recent association with Salas O'Brien aligns the firm with other industry partnerships and ongoing collaborations, signaling a broader platform while maintaining its regional focus and project-oriented service model.

Section iconCompany Overview

Phone number
SIC Code
8711 - Engineering Services
NAICS Code
237 - Heavy and Civil Engineering Construction
Founded
2001
Employees
11-50

Section iconFunding & Financials

  • $1M - $10M

    The Leffler Group's revenue is estimated to be in the range of $1M - $10M

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