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  • Who We Are

    Our Story

    We are a family of builders building amazing spaces across the US, Canada, UK, Ireland, and the Netherlands.

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    History

    Founded in 1971, we have grown into an organization made up of over 5,700 employees across 54 offices.

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  • What We Do

    Projects

    ST. PATRICK`S CATHEDRAL

    St. Patrick’s Cathedral, a New York City landmark building and one of the most revered Catholic Churches in the United States, underwent a major restoration and conservation project.

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    • Aviation
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    No matter the type of project, complexity or client, one thing remains constant—people do the work. Learn more about our career opportunities.

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    Meet the experts who lead our people and organization.

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    We care about each other and are committed to making a positive impact where we live and where we work.

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  • News

    STOBG In The News

    Stay informed and stay connected. View the latest company announcements, employee achievements, and leadership highlights.

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    STOBG Insights Magazine

    Get inspired by the latest issues on project renovations, designs, company commemorations, and collaborations.

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    STOBG Podcast

    Connect and listen to construction professionals and leaders one conversation at a time.

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    Thought Leadership

    What’s next in construction? From trends to data, find out more from our experts.

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  • Companies
    • Abbott Construction
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    • Ajax
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    • BCCI
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    • Govan Brown
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    • Layton
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    • LF Driscoll
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    • STOMC
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    • Pavarini Northeast
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    • Pavarini McGovern
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    • RC Andersen
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    • Structure Tone
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    • Structure Tone International
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    • Structure Tone Southwest
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BUILDING REPOSITIONING | STO Building Group (STOBG)
Structure Tone is a global leader in construction management and general contracting services with offices located in the US, UK, and Ireland. Founded in 1971, the company is among the world’s top twenty construction companies worldwide, responsible for more than $3.5B in annual construction volume.
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SECTOR

Building Repositioning

We specialize in transformative building repositioning and conversion, unlocking untapped potential and maximizing value to elevate the future of properties.

Explore
  • Our Strengths
  • Our Projects
  • Our Leadership
  • Our Insights

Unlocking Potential

#1

Reconstruction Contractor

Building Design+Construction (2025)

1,000+

Repositioning Projects

Nationwide

53M+

Square Feet

Repositioning Projects In The Last Five Years

Explore The Possibilities Of Building Repositioning

Buildings are more than just structures – they're stories waiting to be retold. We’re dedicated to breathing new life into old spaces, reimagining their purpose through repositioning, adaptive reuse, and conversion projects

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project-1

Sage Plaza

Sage Plaza is a LEED Silver, 1980’s commercial tower located in Houston’s Uptown district. Our team partnered with Blackrock, CBRE, and PDR Architects for the building repositioning project to keep this occupied facility in current standard in a competitive market.

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400 S Record

400 S Record Thanks to a significant reconstruction and repositioning effort, the 17-floor, 348,000sf building now features a new glass-walled, two-story lobby with an outdoor canopy, a fitness center, a conference center, renovated office space, abundant artwork, a rooftop terrace and an elegant new restaurant run by Michelin-starred chef Bruno Davaillon.

project-1

TSX Broadway – Theatre & Hotel

You have never seen a project like this before. This ambitious reimagination entailed the demo of an existing hotel tower and re-building a new 5-star hotel tower, while lifting a Landmarked theatre 31’ in the air to create space for new entertainment and retail spaces at and below grade.

project-1

25 Water Street

25 Water Street is being converted from a circa 1968 office and storage building in the Financial District to a state-of-the-art apartment building with over 1,300 units.

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Find Inspiration And Innovation

Case studies, success stories, and before-and-after transformations to draw inspiration from the synergy of vision meeting reality

View all Insights

NYC’s Commercial Reinvention: Office to Residential (RE-RELEASE)

With more than 25% of the country’s office stock projected to become obsolete by 2030, how is an international commercial hub like New York City adapting? Join STOBG’s SVP of Building Repositioning, Brooks McDaniel as he discusses the city’s trend towards residential conversion with commercial design leader and managing partner at MdeAS, Dan Shannon. 

Learn more Jun 24, 2024 | Podcast

Reinventing History: Adaptive Reuse in Landmarked Buildings

Restoring a historic building can present a unique set of challenges. Design requirements, existing conditions, and entitlements can all complicate the process. An experienced team is key to the success of the project. Pavarini McGovern and our sister companies in the STO Building Group (STOBG) have been fortunate to work on several historic NYC buildings, including Lever House, MetLife Building, 100 Vandam, the Barbizon Hotel, and the Irish Arts Center, to name only a few.

Learn more Feb 22, 2024 | Insights

Repositioning to Reduce Carbon

Buildings are responsible for a significant portion of global carbon emissions. According to the International Energy Agency (IEA), the building sector is responsible for around 40% of total global energy consumption and about 28% of global greenhouse gas emissions. Reducing the carbon emissions of the building sector is an important step in addressing climate change.

Learn more Apr 18, 2023 | Insights

Sign of the Times: Repositioning London’s Financial Times Building

With thousands of years of activity, the streets of London, England are lined with historic buildings that have marked the skyline for decades—sometimes centuries. A stroll down these same streets with the Structure Tone team would showcase how many buildings today are currently being repositioned—that is, sensitively and respectfully transformed into properties that are more appealing to the modern tenant and environmentally sustainable.

Learn more Apr 11, 2023 | Insights
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Explore what’s achievable and start a conversation

Contact us

Our Family of Builders

  • Abbott Construction
  • Ajax
  • BCCI
  • Govan Brown
  • Layton Construction
  • LF Driscoll
  • STO Mission Critical
  • Pavarini North East
  • Pavarini McGovern
  • RC Andersen
  • Structure Tone
  • Structure Tone International
  • Structure Tone Southwest

Who We Are

  • Our Story
  • History
  • Leadership
  • Corporate Responsibility

Helpful Links

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  • Modern Slavery Statement

Industry Insights

  • Insights Magazine
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Contact Us

Locations

Business Development
bd@stobuildinggroup.com
Careers
careers@stobuildinggroup.com
Press
press@stobuildinggroup.com

STO Building Group (STOBG) is a Family of Builders.

STO Building Group (STOBG) is a leader in commercial construction management. We draw on each other’s strengths to deliver expert services in preconstruction, sustainable construction, virtual design and construction, and more.

 

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